Proposal system of rental collective housing

Abstract

To provide a proposal system of a rental collective housing capable of easily determining house rent for improving profitability of an owner etc., while securing merit of a tenant by utility expense reduction.SOLUTION: A system proposes a rental collective housing 1 comprising a photovoltaic power generator 3, to an object person. The system includes: a basic utility expense calculation unit which calculates a basic utility expense of at least one dwelling house 4 included in the rental collective housing 1; a revision utility expense calculation unit which calculates a revision utility expense of at least one dwelling house 4, about the rental collective housing 1 in a revision specification 32 in which a selected device 14 and / or a facility 15 are added to a basic specification of the rental collective housing 1; an increased amount calculation unit which determines at least a part of the amount of difference between the basic utility expense and the revision utility expense, as an increased amount added to basic house rent; a revision house rent calculation unit which calculates information related to the house rent of the rental collective housing 1 in the revision specification 32, on the basis of the basic house rent and the increased amount; and an output unit which outputs the information.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a system for proposing rental apartment buildings. [Background technology]

[0002] The following Patent Document 1 describes a method for designing a custom-built house. In this method, a house with improved energy-saving performance is designed based on the user's requests. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-015370 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, due to the tight supply and demand of electricity and the instability of energy prices, there is a demand for improving the energy saving performance of rental apartment buildings. For example, in the case of rental apartment buildings equipped with solar power generation equipment, it is possible to reduce the utility bills of each dwelling unit by installing a device that consumes the electricity generated by the solar power generation equipment within the rental apartment building. This can be beneficial for the residents.

[0005] On the other hand, the introduction of the above-mentioned device increases the purchase price of the rental apartment building. For this reason, it is important for the purchasers of rental apartment buildings (hereinafter, simply referred to as "owners, etc.") to determine optimal rent for each dwelling unit and improve profitability such as yield. However, it is not easy to determine rent that ensures benefits for tenants while improving profitability for owners, etc.

[0006] The present invention was devised in consideration of the above-mentioned situation, and its main objective is to provide a rental apartment complex proposal system that can easily determine rents that will increase the profitability of owners, etc., while ensuring the benefits to tenants through reduced utility costs. [Means for solving the problem]

[0007] The present invention is a system for proposing a rental apartment house equipped with a solar power generation device to a subject, comprising: a basic specification storage unit that stores basic specifications of the rental apartment house; a basic rent storage unit that stores a basic rent for the rental apartment house based on the basic specifications; a basic utility cost calculation unit that calculates a basic utility cost which is an approximate utility cost for at least one dwelling unit included in the rental apartment house; a self-consumption rate improvement device group storage unit that stores multiple types of devices and / or equipment for consuming more electricity generated by the solar power generation device within the rental apartment house; and a storage unit that stores at least one of the multiple types of devices and / or equipment selected by the subject. The rental apartment proposal system includes a selected device memory unit that stores one of the selected devices and / or equipment, a revised utility cost calculation unit that calculates revised utility costs, which are approximate utility costs for at least one unit, for the rental apartment building with revised specifications in which the selected device and / or equipment is added to the basic specifications, an increase calculation unit that determines at least a portion of the difference between the basic utility cost and the revised utility cost as an increase to be added to the basic rent, a revised rent calculation unit that calculates information regarding the rent of the rental apartment building with the revised specifications based on the basic rent and the increase, and an output unit that outputs the information. Effect of the Invention

[0008] By adopting the above-described configuration, the rental apartment complex proposal system of the present invention makes it possible to easily determine rent that increases the profitability of owners, etc. while ensuring the benefits to tenants through reduced utility costs. [Brief description of the drawings]

[0009] [Figure 1]This is a cross-sectional view showing an example of a rental apartment building with basic specifications. [Diagram 2] FIG. 1 is a cross-sectional view showing an example of a rental apartment building equipped with multiple types of devices and equipment. [Diagram 3] 1 is a block diagram showing an example of the configuration of a rental apartment proposal system. [Figure 4] 13 is a flowchart showing an example of a processing procedure of a method for proposing a rental apartment building. [Diagram 5] A diagram showing specifications of a rental apartment building, a solar power generation device, and equipment and facilities. [Figure 6] FIG. 13 is a diagram showing an example of a selection screen for multiple types of devices and / or equipment. [Figure 7] FIG. 13 is a diagram showing an example of a screen on which information regarding rent for a rental apartment building based on revised specifications is output. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be understood that the drawings include exaggerated expressions and expressions different from the dimensional ratio of the actual structure in order to help understand the contents of the invention. Furthermore, the same or common elements are given the same reference numerals throughout the embodiments, and duplicated explanations are omitted. Furthermore, the specific configurations shown in the embodiments and drawings are for understanding the contents of the present invention, and the present invention is not limited to the specific configurations shown in the drawings.

[0011] In the rental apartment proposal system (hereinafter, sometimes referred to as the "proposal system") of this embodiment, a rental apartment equipped with a solar power generation device is proposed to a target person.

[0012] In this embodiment, a rental apartment house that has not yet been built (newly built) is proposed, but a proposal may also be made to renovate a rental apartment house that has already been built. The target person is not particularly limited as long as he or she wishes to build or renovate a rental apartment house. Examples of the target person include owners of rental apartment houses and management companies of rental apartment houses (hereinafter sometimes referred to as "owners, etc.").

[0013] The proposal system of the present embodiment is used, for example, as a business negotiation tool for a construction company to propose a rental apartment building to an owner, etc., during business negotiations between the construction company and the owner, etc. Construction companies include, for example, house manufacturers, construction companies, general contractors, etc.

[0014] There are no particular limitations on the rental apartment house as long as it is equipped with a solar power generation device. In this embodiment, a rental apartment house is proposed to which devices and / or equipment selected by an owner or the like (subject person) from among a plurality of types of devices and / or equipment determined in advance are added. The plurality of types of devices and / or equipment are intended to consume the electricity generated by the solar power generation device within the rental apartment house. Details of the devices and equipment will be described later.

[0015] In rental housing complexes equipped with solar power generation equipment, the addition of equipment and / or facilities increases the self-consumption rate of solar power generation (renewable energy). This allows the rental housing complex to be recognized as a ZEH in a housing complex (hereinafter sometimes referred to as a "collective ZEH"). Here, ZEH is an abbreviation for Net Zero Energy House, a house that aims to achieve an energy balance of zero or less.

[0016] [Rental apartment complex] FIG. 1 is a cross-sectional view showing an example of a rental apartment house 1. The rental apartment house 1 is configured as, for example, an apartment or condominium. In this embodiment, a two-story rental apartment house 1 is illustrated as an example, but is not particularly limited to this. The rental apartment house may be, for example, one-story or three or more stories.

[0017] The rental apartment 1 of this embodiment is constructed as an industrialized apartment. In such an industrialized apartment, for example, the specifications of the multiple components 2 (exterior walls 6, interior walls 7, etc.) that constitute the rental apartment 1, the layout, etc. are determined in advance. Note that the rental apartment 1 is not limited to such an industrialized apartment.

[0018] The rental apartment house 1 of this embodiment is equipped with a solar power generation device 3 and includes a plurality of dwelling units 4. Furthermore, the rental apartment house 1 of this embodiment is composed of a plurality of members 2 (foundation 5, exterior walls 6, interior walls 7, floor 8, ceiling 9, roof 10, etc.) similar to, for example, a conventional rental apartment house (not shown).

[0019] [Solar power generation equipment] The solar power generation device 3 is for generating electric power converted from solar light energy as renewable energy. The solar power generation device 3 of this embodiment is installed on the roof 10 of the rental apartment house 1, but is not particularly limited thereto. Also, for example, known solar power generation devices such as silicon-based and compound-based solar power generation devices may be used for the solar power generation device 3 of this embodiment. Silicon-based solar power generation devices with excellent power generation efficiency may be used for the solar power generation device 3 of this embodiment.

[0020] [Dwelling unit] Each dwelling unit 4 is an individual unit in the rental apartment complex 1, and is a private area for the resident. Each dwelling unit 4 has the necessary functions as a residence, and includes, for example, a living room and non-living rooms such as a toilet and a bathroom.

[0021] The multiple dwelling units 4 in this embodiment include a first floor dwelling unit 4A and a second floor dwelling unit 4B. Each of the first floor dwelling unit 4A and the second floor dwelling unit 4B may include only one unit, or may include multiple units. When each of the first floor dwelling unit 4A and the second floor dwelling unit 4B includes multiple units, the dwelling units 4 are separated by a partition wall (not shown). In this embodiment, the total number of dwelling units 4 is illustrated as six, but is not limited to this.

[0022] [Common area] The rental apartment house 1 of this embodiment includes a common area 11. The common area 11 of this embodiment is formed inside the rental apartment house 1.

[0023] The common area 11 of this embodiment is a shared space that faces multiple dwelling units 4 and is partitioned off from the outdoors (exterior air) 12. Such common area 11 is separated from the outdoors 12 by an exterior wall 6, improving crime prevention for the rental apartment complex 1. The common area 11 of this embodiment is configured as a corridor, staircase, or the like facing each dwelling unit 4.

[0024] The common area 11 of this embodiment includes a common area 11A on the first floor and a common area 11B on the second floor. The common area 11A on the first floor and the common area 11B on the second floor are, for example, a corridor. A staircase 11C having an ascending and descending staircase is included between the common area 11A on the first floor and the common area 11B on the second floor. Air can flow between the common area 11A on the first floor and the common area 11B on the second floor via the staircase 11C.

[0025] The common area 11A on the first floor faces the dwelling unit 4A on the first floor. The common area 11A on the first floor and the dwelling unit 4A on the first floor are separated by an inner wall 7, a door 13, and a window (not shown), and air can pass between them through the gaps in the door 13 and the air vents (not shown).

[0026] The second floor common area 11B faces the second floor dwelling unit 4B. The second floor common area 11B and the second floor dwelling unit 4B are separated by an inner wall 7, a door 13, and a window (not shown), and air can pass between them through the gaps in the door 13 and the air vents (not shown).

[0027] 2 is a cross-sectional view showing an example of a rental apartment house 1 provided with multiple types of devices 14 and equipment 15. As described above, the multiple types of devices 14 and equipment 15 are intended to consume more of the electricity generated by the solar power generation device 3 within the rental apartment house 1.

[0028] [Device] The device 14 is not particularly limited as long as the power generated by the solar power generation device 3 can be consumed within the rental apartment building 1. Examples of the device 14 include a heat pump water heater 14A, a power storage device 14B, and a V2H device 14C. These devices 14 can be installed in each dwelling unit 4 of the rental apartment building 1, for example.

[0029] [Heat pump water heater] The heat pump water heater 14A uses electricity and atmospheric heat to heat hot water and supplies the hot water to each dwelling unit 4. The hot water boiled by the heat pump water heater 14A can be kept at the same temperature. Therefore, the time for which the water is boiled is not particularly limited.

[0030] In this embodiment, for example, the heat pump water heater 14A heats up water during the day when the amount of power generated by the solar power generation device 3 is large, and the power generated by the solar power generation device 3 can be consumed within the rental apartment house 1. This makes it possible to improve the self-consumption rate of the rental apartment house 1.

[0031] In this embodiment, the heat pump water heater 14A uses electricity generated by the solar power generation device 3 to heat water, thereby reducing the energy costs of each dwelling unit 4. Therefore, the heat pump water heater 14A helps to improve the benefits for the residents of each dwelling unit 4.

[0032] [Electricity storage device] The power storage device 14B is for supplying the stored electricity to electrical appliances (not shown) in each dwelling unit 4. In this embodiment, for example, the power storage device 14B is charged during the day when the amount of power generated by the solar power generation device 3 is large, so that the power generated by the solar power generation device 3 can be consumed within the rental apartment complex 1. This makes it possible to improve the self-consumption rate of the rental apartment complex 1.

[0033] In this embodiment, the power generated by the solar power generation device 3 is used to charge the power storage device 14B, and the stored power is supplied to electrical equipment (not shown) in each dwelling unit 4, thereby making it possible to reduce the utility costs of each dwelling unit 4. Furthermore, the power stored in the power storage device 14B can be used in the event of a power outage due to a disaster or the like. Therefore, the power storage device 14B helps to improve the benefits for the residents of each dwelling unit 4.

[0034] [V2H device] The V2H (Vehicle to Home) device 14 is for charging the electric vehicle 18 and supplying the power stored in the electric vehicle 18 to electrical appliances (not shown) in each dwelling unit 4. In this embodiment, for example, the electric vehicle 18 is charged in the daytime when the amount of power generated by the solar power generation device 3 is large, so that the power generated by the solar power generation device 3 can be consumed in the rental apartment complex 1. This makes it possible to improve the self-consumption rate in the rental apartment complex 1.

[0035] In this embodiment, the power generated by the solar power generation device 3 is used to charge the electric vehicle 18, and the stored power is supplied to electrical equipment (not shown) in each dwelling unit 4, thereby reducing the utility costs of each dwelling unit 4. Furthermore, the power stored in the electric vehicle 18 can be used in the event of a power outage due to a disaster or the like. Therefore, the V2H device 14C helps to improve the benefits for the residents of each dwelling unit 4.

[0036] [Equipment] The equipment 15 is not particularly limited as long as the electricity generated by the solar power generation device 3 can be consumed within the rental apartment house 1. The equipment 15 in this embodiment includes an air conditioning equipment 15A in the common area 11. For example, one air conditioning equipment 15A is installed in the rental apartment house 1, but multiple air conditioning equipment 15A may be installed.

[0037] [Air conditioning equipment] The air conditioning equipment 15A of this embodiment includes an air conditioner 16. The air conditioner 16 is for supplying conditioned air (hereinafter sometimes referred to as "conditioned air") A1 to the common area 11. The air conditioner 16 of this embodiment includes, as a set, an indoor unit 16a and an outdoor unit (not shown) installed outside (outdoors 12) of the rental apartment complex 1.

[0038] The indoor unit 16a of this embodiment is installed in the attic 17 of the rental apartment 1, and is capable of supplying conditioned air A1 to the common area 11B on the second floor. This common area 11B on the second floor can communicate with the common area 11A on the first floor via the stairwell 11C. As a result, the conditioned air A1 supplied to the common area 11B on the second floor is supplied to the stairwell 11C and the common area 11A on the first floor, so that the entire common area 11 is conditioned. This can improve comfort in the common area 11, where heat and cold air from outdoors tend to build up.

[0039] In this embodiment, the conditioned air A1 is supplied to the common area 11B on the second floor, but is not limited to this. The conditioned air A1 may be supplied to the common area 11A on the first floor, or may be supplied to both the common area 11A on the first floor and the common area 11B on the second floor, for example.

[0040] In this embodiment, the power generated by the solar power generation device 3 is used for at least a portion of the power required to operate the air conditioner 16. This allows the power generated by the solar power generation device 3 to be consumed within the rental apartment building 1. This makes it possible to improve the self-consumption rate of the rental apartment building 1.

[0041] In this embodiment, the air conditioner 16 is operated using electricity generated by the solar power generation device 3, which reduces the running costs of the air conditioner 16. This can suppress increases in rent for each dwelling unit 4 that would be associated with increased running costs. In addition, the conditioned air A1 supplied to the common area 11 is supplied to the first floor dwelling unit 4A and the second floor dwelling unit 4B through gaps in the door 13 and air vents (not shown). This reduces the air conditioning load in each dwelling unit 4, making it possible to reduce the energy costs of each dwelling unit 4. Therefore, the air conditioning equipment 15A helps to improve the benefits for the residents of each dwelling unit 4.

[0042] In this way, by installing the above-mentioned devices 14 and equipment 15 in the rental apartment complex 1 equipped with the solar power generation device 3, the self-consumption rate of the rental apartment complex 1 is improved, and the rental apartment complex 1 can be recognized as a collective ZEH. Furthermore, the utility costs of each dwelling unit 4 can be reduced, improving the benefits for residents.

[0043] On the other hand, the introduction of the above-mentioned device 14 and equipment 15 increases the purchase price of the rental apartment building 1. For this reason, it is important for the owner, etc. who purchases the rental apartment building 1 to optimally determine the rent for each dwelling unit 4 and improve profitability such as yield. However, it is not easy to determine the rent that will improve the profitability of the owner, etc. while ensuring benefits for the tenants.

[0044] [Rental apartment complex proposal system] In the rental apartment proposal system of this embodiment, rent is determined so as to improve the profitability of the owner, etc. while ensuring the benefit to the resident of the reduced utility costs. Fig. 3 is a block diagram showing an example of the configuration of the rental apartment proposal system 20.

[0045] The proposal system 20 of this embodiment has an input device 21, a display device 22, and a calculation processing device 23 (computer 19). A collection of these devices can constitute the proposal system 20 capable of performing the function of proposing rental apartment complexes shown in Fig. 1. The calculation processing device 23 (computer 19) of this embodiment is, for example, a personal computer or a mobile information terminal (tablet type, etc.), but is not particularly limited thereto, and may be, for example, constituted as a server (cloud server).

[0046] [Input / display device] 2, for example, a keyboard, a mouse, a touch panel, etc. are used as the input device 21. For example, a display device, a printer, etc. are used as the display device 22.

[0047] [Processing unit] The arithmetic processing device 23 includes a calculation unit (CPU) 23A that performs various calculations, a storage unit 23B that stores data, programs, etc., and a working memory 23C.

[0048] [Storage] The storage unit 23B is a non-volatile information storage device formed of, for example, a magnetic disk, an optical disk, an SSD, etc. The storage unit 23B includes a data unit 24 and a program unit 25.

[0049] The data section 24 is for storing information necessary for proposing the rental apartment complex 1. The data section 24 of this embodiment includes a basic specification storage section 24A, a basic rent storage section 24B, a basic utility fee storage section 24C, and a self-consumption rate improvement device group storage section 24D. Furthermore, the data section 24 of this embodiment includes a selected device storage section 24E, a revised utility fee storage section 24F, an increase storage section 24G, and a revised rent storage section 24H. Note that the data section 24 is not limited to such an embodiment. For example, some of these may be omitted, or an input section (not shown) for storing other data may be further included.

[0050] The basic specification memory unit 24A stores basic specifications 31 (shown in FIG. 1) of the rental apartment house 1. The basic specifications 31 are the specifications of the rental apartment house 1 before the devices 14 and facilities 15 shown in FIG. 2 are added. As shown in FIG. 3, the basic rent memory unit 24B stores the basic rent for the rental apartment house 1 (shown in FIG. 1) based on the basic specifications 31. The basic utility fee memory unit 24C stores basic utility fees, which are approximate utility fees for at least one dwelling unit 4 (shown in FIG. 1) included in the rental apartment house 1.

[0051] The self-consumption rate improvement device group memory unit 24D stores multiple types of devices 14 and / or facilities 15 for consuming more electricity generated by the solar power generation device 3 shown in Fig. 2 within the rental apartment complex 1. The selected device memory unit 24E stores at least one selected by the owner or the like (subject) from the multiple types of devices 14 and / or facilities 15 shown in Fig. 2.

[0052] The revised utility bill memory unit 24F stores revised utility bills, which are estimated utility bills for at least one dwelling unit 4 for a rental apartment building 1 (shown in Figure 2) with revised specifications 32 in which selected devices 14 and / or equipment 15 are added to the basic specifications 31 shown in Figure 1.

[0053] The increase memory unit 24G stores an increase for adding at least a part of the difference between the basic utility fee and the revised utility fee to the basic rent. The revised rent memory unit 24H stores information on the rent for the rental apartment complex 1 (shown in FIG. 2) under the revised specifications 32 calculated based on the basic rent and the increase. The details of these data will be described later.

[0054] [Program section] The program unit 25 is a program (computer program) necessary for executing the method for proposing the rental apartment complex 1. This program unit (program) 25 is executed by the calculation unit 23A, thereby causing the computer 19 to function as a specific means for proposing the rental apartment complex 1 shown in Figs. 1 and 2.

[0055] The program unit 25 of this embodiment includes a basic specification input unit 25A, a basic rent input unit 25B, a basic utility cost calculation unit 25C, a self-consumption rate improvement device group input unit 25D, and a selected device input unit 25E. Furthermore, the program unit 25 includes a revised utility cost calculation unit 25F, an increase calculation unit 25G, a revised rent calculation unit 25H, an output unit 25J, and a judgment unit 25K.

[0056] The basic specification input unit 25A is a program for storing basic specifications 31 (shown in FIG. 1) of the rental apartment house 1. The basic rent input unit 25B is a program for storing the basic rent for the rental apartment house 1 (shown in FIG. 1) based on the basic specifications 31. The basic utility cost calculation unit 25C is a program for calculating basic utility costs, which are approximate utility costs for at least one dwelling unit 4 (shown in FIG. 1) included in the rental apartment house 1.

[0057] The self-consumption rate improvement device group input unit 25D is a program for storing multiple types of devices 14 and / or facilities 15 for consuming more electricity generated by the solar power generation device 3 shown in Fig. 2 within the rental apartment complex 1. The selected device input unit 25E is a program for allowing the owner, etc. (subject) to select at least one of the multiple types of devices 14 and / or facilities 15 shown in Fig. 2.

[0058] The revised utility cost calculation unit 25F is a program that calculates revised utility costs, which are approximate utility costs for at least one unit 4, for a rental apartment building 1 with revised specifications 32 that add selected devices 14 and / or equipment 15 shown in Figure 2 to the basic specifications 31 shown in Figure 1.

[0059] The increase calculation unit 25G is a program for determining at least a part of the difference between the basic utility fee and the revised utility fee as an increase to be added to the basic rent. The revised rent calculation unit 25H is a program for calculating information on the rent for the rental apartment building 1 (shown in FIG. 2) under the revised specifications 32 based on the basic rent and the increase.

[0060] The output unit 25J is a program for outputting information about the rent of the rental apartment 1 (shown in FIG. 2) with the revised specifications 32. The judgment unit 25K is a program for judging whether the owner, etc. (the subject person) has decided to purchase the rental apartment 1 with the revised specifications 32.

[0061] The program section 25 is not limited to such an embodiment, and for example, some of these may be omitted, or a program section (not shown) having other functions may be further included. The functions of these program sections 25 will be described in detail later.

[0062] [How to propose rental apartment buildings] The proposal system 20 of this embodiment determines the rent based on the processing steps of a method for proposing the rental apartment house 1 (hereinafter, sometimes referred to as the "proposal method"). Fig. 4 is a flowchart showing an example of the processing steps of the proposal method for the rental apartment house.

[0063] [Memorize the basic specifications of rental apartment buildings] In the method proposed in this embodiment, first, the basic specifications 31 of the rental apartment complex 1 shown in FIG. 1 are stored in the computer 19 (shown in FIG. 3) (step S1).

[0064] In step S1 of this embodiment, first, a basic specification input unit 25A included in the program unit 25 shown in Fig. 3 is loaded into the working memory 23C. The basic specification input unit 25A is a program for storing the basic specifications of the rental apartment house 1 in a basic specification storage unit 24A included in the data unit 24. The basic specification input unit 25A is executed by the calculation unit 23A, whereby the computer 19 can function as a means for storing the basic specifications of the rental apartment house 1.

[0065] As shown in Fig. 1, basic specifications 31 are the specifications of rental apartment house 1 before the device 14 and equipment 15 shown in Fig. 2 are added. This basic specifications 31 includes the specifications of rental apartment house 1 and the specifications of solar power generation equipment 3. Fig. 5 is a diagram showing the specifications of rental apartment house 1, solar power generation equipment 3, device 14, and equipment 15.

[0066] The specifications of the rental apartment complex 1 include, for example, the purchase price per dwelling unit 4 (hereinafter sometimes referred to as the "purchase price per unit").

[0067] The purchase price per unit does not take into account (does not include) the purchase price of the solar power generation device 3 and the purchase prices of the device 14 and the equipment 15. By multiplying such a purchase price per unit (10 million yen in this example) by the total number of units in the rental apartment complex 1 (6 units in this example), the purchase price of the rental apartment complex 1 (60 million yen in this example) can be easily determined. Note that the purchase price of the rental apartment complex 1 does not include the purchase prices of the solar power generation device 3, the device 14, and the equipment 15.

[0068] In the case where the rental apartment complex 1 shown in FIG. 1 is an industrialized apartment complex as in this embodiment, for example, the purchase price per unit may be determined for each product of the rental apartment complex 1.

[0069] The specifications of the rental apartment building 1 in this embodiment further include the floor area per dwelling unit 4, the exterior surface area per dwelling unit 4, the ceiling height, the average exterior heat transfer coefficient, and the average solar heat gain coefficient during the heating season (all not shown). When the rental apartment building 1 is an industrialized apartment building as in this embodiment, these specifications may be determined for each product of the rental apartment building 1, for example.

[0070] The specifications of the rental apartment 1 are not limited to being determined for each product of the rental apartment 1. For example, the specifications of the rental apartment 1 may be determined individually according to the specifications of the multiple components 2 (exterior walls 6, interior walls 7, etc.) constituting the rental apartment 1 shown in Fig. 1, the layout, etc. In this case, it is preferable that a screen (not shown) for inputting the specifications of the rental apartment 1 is displayed on the display device 22 by the basic specification input unit 25A shown in Fig. 3. This allows the specifications of the rental apartment 1 to be input individually by an operator, etc.

[0071] 5, the specifications of the solar power generation device 3 include, for example, the purchase price per unit capacity (1 kW) of the solar panel. The purchase price per unit capacity (350,000 yen in this example) is multiplied by the total capacity (15 kW in this example) of the solar panels to be installed in the rental apartment complex 1, so that the purchase price of the solar power generation device 3 (5,250,000 yen in this example) can be easily determined. The purchase price of the solar power generation device 3 includes the cost of installation in the rental apartment complex 1.

[0072] The basic specifications 31 are input to the basic specifications storage unit 24A (computer 19) by the basic specifications input unit 25A shown in Fig. 3. The basic specifications 31 may be stored in the basic specifications storage unit 24A (computer 19) prior to the implementation of the proposed method. In this case, step S1 may be omitted.

[0073] [Remember base rent] Next, in the method proposed in this embodiment, the basic rent for the rental apartment complex 1 based on the basic specifications 31 shown in Fig. 1 is stored in the computer 19 (shown in Fig. 3) (step S2). In this embodiment, the basic rent is exemplified as one year's rent for one dwelling unit 4, but it may be one month's rent.

[0074] In step S2 of this embodiment, first, the basic rent input unit 25B included in the program unit 25 shown in Fig. 3 is loaded into the working memory 23C. The basic rent input unit 25B is a program for storing the basic rent of the rental apartment house 1 according to the basic specifications 31 shown in Fig. 1 in the basic rent storage unit 24B included in the data unit 24. By executing this basic rent input unit 25B by the calculation unit 23A, the computer 19 can function as a means for storing the basic rent of the rental apartment house 1 according to the basic specifications 31.

[0075] The basic rent can be set appropriately depending on, for example, the purchase price of the rental apartment complex 1 with the basic specifications 31 shown in Fig. 5 and the return on the purchase price that the owner, etc. can expect. In step S2 of this embodiment, the basic rent is specified for at least one (in this example, all) dwelling units 4 included in the rental apartment complex 1.

[0076] In this embodiment, the basic rent for each dwelling unit 4 is set at 1,032,000 yen / year. In the case where the rental apartment building 1 is an industrialized apartment building as in this embodiment, the basic rent may be determined in advance for each product of the rental apartment building 1, for example.

[0077] In step S2, for example, a screen (not shown) for inputting the basic rent may be displayed on the display device 22 by the basic rent input unit 25B shown in Fig. 3. This allows the operator or the like to input the basic rent individually.

[0078] The basic rent is stored in the basic rent storage unit 24B (computer 19) by the basic rent input unit 25B. The basic rent may be stored in the basic rent storage unit 24B (computer 19) prior to the implementation of the proposed method. In this case, step S2 may be omitted.

[0079] [Calculate basic utility costs] Next, in the method proposed in this embodiment, the computer 19 calculates basic utility costs, which are approximate utility costs for at least one dwelling unit 4 included in the rental apartment complex 1 with the basic specifications 31 shown in Fig. 1 (step S3). In this embodiment, the basic utility costs are exemplified as one year's worth of utility costs incurred in one dwelling unit 4, but are not limited to this, and may be, for example, one month's worth of utility costs.

[0080] In step S3 of this embodiment, first, the basic specifications 31 (shown in FIG. 5) of the rental apartment house 1 stored in the basic specification storage unit 24A shown in FIG. 3 and the basic utility cost calculation unit 25C included in the program unit 25 are loaded into the working memory 23C. The basic utility cost calculation unit 25C is a program for calculating basic utility costs, which are approximate utility costs for at least one dwelling unit 4 included in the rental apartment house 1 shown in FIG. 1. The basic utility cost calculation unit 25C is executed by the calculation unit 23A, thereby allowing the computer 19 to function as a means for calculating basic utility costs.

[0081] The basic utility cost may be calculated as appropriate, for example, based on a known procedure. In this embodiment, for example, the basic utility cost of one dwelling unit 4 in the basic specifications 31 is calculated using the specifications of the rental apartment house 1 included in the basic specifications 31. As described above, the specifications of the rental apartment house 1 include the floor area per dwelling unit 4, the exterior surface area per dwelling unit 4, the ceiling height, the average exterior heat transfer coefficient, and the average solar radiation heat gain coefficient during the heating season (all of which are not shown).

[0082] For example, the following formula (1) is used to calculate the basic utility cost. Formula (1) is a representative calculation formula for the basic utility cost during the heating season. C1 = S1 × HU A ×S2-η AH ×(S2-S1)×T … (1) Where: C1: Basic utility costs for one residence (yen / year) S1: Floor area per dwelling unit (mm 2 ) S2: Outer surface area per dwelling unit (mm 2 ) H: Ceiling height (mm) U A :Skin average heat transfer coefficient η AH : Average solar heat gain rate during heating season T: Correction constant

[0083] The above formula (1) is a calculation formula for estimating all utility costs (annual utility costs) including hot water supply and air conditioning for one dwelling unit 4 included in a rental apartment complex 1 with basic specifications 31 shown in Figure 1. By using such formula (1), the basic utility cost C1 (i.e., the estimated utility cost for one dwelling unit) can be easily calculated.

[0084] The average outer skin heat transfer coefficient U A , and the average solar heat gain rate during the heating season η AH can be appropriately set based on, for example, a known procedure. In the case where the rental apartment 1 is an industrialized apartment as in the present embodiment, for example, the average outer shell heat transfer coefficient U A In addition, the average solar heat gain coefficient η AH is preferably determined according to the area where the rental apartment complex 1 is planned to be built. This allows the basic utility fee C1 to be calculated with high accuracy. The correction constant T can be set appropriately according to the living environment of the dwelling unit 4, for example.

[0085] In this embodiment, the basic utility cost C1 is calculated to be, for example, 84,108 yen / year. The basic utility cost C1 may be calculated using, for example, a known WEB program for calculating utility costs. The basic utility cost C1 is stored in the basic utility cost storage unit 24C shown in FIG. 3.

[0086] [Stores multiple types of equipment and / or facilities] Next, in the method proposed in this embodiment, a plurality of types of devices 14 and / or facilities 15 for consuming more of the electricity generated by the solar power generation device 3 shown in Fig. 2 within the rental apartment complex 1 are stored in a computer 19 (shown in Fig. 3) (step S4). In this embodiment, a plurality of types of devices 14 and facilities 15 are stored in the self-consumption rate improvement device group storage unit 24D shown in Fig. 3.

[0087] In step S4 of this embodiment, first, the self-consumption rate improvement device group input unit 25D included in the program unit 25 shown in Fig. 2 is loaded into the working memory 23C. The self-consumption rate improvement device group input unit 25D is a program for storing, in the self-consumption rate improvement device group storage unit 24D, multiple types of devices 14 and / or facilities 15 for consuming more of the power generated by the solar power generation device 3 shown in Fig. 2 within the rental apartment complex 1. When the self-consumption rate improvement device group input unit 25D is executed by the calculation unit 23A, the computer 19 is stored as a means for storing multiple types of devices 14 and / or facilities 15.

[0088] 2, the devices 14 of this embodiment include a heat pump water heater 14A, a power storage device 14B, and a V2H device 14C. These devices 14 can consume more of the power generated by the solar power generation device 3 within the rental apartment complex 1.

[0089] As shown in FIG. 5, in this embodiment, the purchase price of the device 14 per dwelling unit 4 (hereinafter, sometimes referred to as the "device purchase price per unit") is specified. By multiplying this device purchase price per unit by the total number of units in the rental apartment complex 1 (six units in this example), the total purchase price of each device 14 required to be added to the rental apartment complex 1 of the basic specifications 31 shown in FIG. 1 can be easily specified. This total purchase price includes the cost of installation in the rental apartment complex 1. Note that, in this embodiment, the purchase price of the heat pump water heater 14A is shown as the difference between the gas water heater (latent heat recovery water heater) included in the purchase price of the basic specifications 31 (hereinafter, sometimes referred to as the "additional price").

[0090] For example, when adding a heat pump water heater 14A, the purchase price per unit shown in Fig. 5 (in this example, the additional price: 150,000 yen) is multiplied by the total number of units in the rental apartment complex 1 (in this example, 6 units). This allows the total purchase price of the heat pump water heater 14A (in this example, the total additional price: 900,000 yen) to be determined.

[0091] 2, the equipment 15 of this embodiment includes an air conditioning equipment 15A in the common area 11. As described above, such an air conditioning equipment 15A can consume more of the electricity generated by the solar power generation device 3 within the rental apartment building 1.

[0092] As shown in Fig. 5, in this embodiment, the purchase price of the air conditioning equipment 15A required for one dwelling unit 4 (hereinafter sometimes referred to as "air conditioning unit purchase price per unit") is specified. As a result, by multiplying the air conditioning unit purchase price per unit (300,000 yen in this example) by the total number of units in the rental apartment complex 1 (6 units in this example), the purchase price (1,800,000 yen) of the air conditioning equipment 15A required to be added to the basic specifications 31 shown in Fig. 1 can be easily determined. This total purchase price includes the cost of installation in the rental apartment complex 1.

[0093] In step S4 of this embodiment, the name of each device 14 shown in FIG. 5 and the device purchase price per household of each device 14 are stored in the self-consumption rate improvement device group storage unit 24D (computer 19) shown in FIG. 3. Furthermore, the name of the equipment 15 shown in FIG. 5 (i.e., air conditioning equipment 15A) and the air conditioning device purchase price per household of the equipment 15 are stored in the self-consumption rate improvement device group storage unit 24D (computer 19) shown in FIG. 3. The name of each device 14 described above may be stored in the self-consumption rate improvement device group storage unit 24D (computer 19) prior to implementing the proposed method. In this case, step S4 may be omitted.

[0094] [Select at least one from multiple types of equipment and / or facilities] Next, in the method proposed in this embodiment, the owner or the like (subject) selects at least one of the multiple types of devices 14 and / or facilities 15 shown in Figures 2 and 5 (step S5). In this embodiment, at least one (in this example, one) is selected from the multiple types of devices 14 and facilities 15.

[0095] In step S5, first, the names of the multiple types of devices 14 and / or facilities 15 (shown in FIG. 2) stored in the self-consumption rate improvement device group storage unit 24D shown in FIG. 4 and a selected device input unit 25E included in the program unit 25 are read into the working memory 23C. The selected device input unit 25E is a program for allowing the owner, etc. to select at least one of the multiple types of devices 14 and / or facilities 15. By executing this selected device input unit 25E by the calculation unit 23A, the computer 19 can function as a means for selecting at least one of the multiple types of devices 14 and / or facilities 15.

[0096] Step S5 of this embodiment can be implemented as appropriate as long as it allows the owner or the like to select at least one from the multiple types of devices 14 and / or facilities 15 shown in Fig. 2. In step S5 of this embodiment, first, a screen for selecting at least one from the multiple types of devices 14 and / or facilities 15 is displayed on the display device 22 shown in Fig. 3. Fig. 6 is a diagram showing an example of a selection screen 35 for multiple types of devices 14 and / or facilities 15. Fig. 6 illustrates a state in which a heat pump water heater 14A has been selected.

[0097] The selection screen 35 displays the basic specifications 31 and the names of multiple types of devices 14 and facilities 15, which can be selected individually. In this embodiment, only one of the multiple types of devices 14 and facilities 15 can be selected, but two or more of them may be selected at the same time.

[0098] In this embodiment, an explanatory text 36 for the basic specifications 31 and explanatory texts 36 for each of the devices 14 and the equipment 15 are displayed. The explanatory texts 36 include matters that may be beneficial to residents. This enables the construction company to easily propose a rental apartment complex 1 that can improve the benefits to residents in response to the requests of the owner during business negotiations between the construction company and the owner.

[0099] The device 14 and / or facility 15 selected by the owner or the like is input to the selected device storage unit 24E (computer 19) shown in FIG. 3 by the selected device input unit 25E.

[0100] [Calculate revised utility costs based on revised specifications] Next, in the method proposed in this embodiment, the computer 19 calculates revised utility costs, which are approximate utility costs for at least one dwelling unit 4, for the rental apartment complex 1 with the revised specifications 32 shown in FIG. 2 (step S6).

[0101] The revised specifications 32 are obtained by adding the device 14 and / or equipment 15 selected in Fig. 6 to the basic specifications 31 (shown in Fig. 1). In the present embodiment, the revised utility fee is exemplified as one year's worth of utility fees incurred in one dwelling unit 4, but is not limited to this example and may be, for example, one month's worth of utility fees.

[0102] In step S6, first, the basic utility cost stored in the basic utility cost storage unit 24C shown in FIG. 3 and the selected device 14 and / or equipment 15 (shown in FIG. 6) stored in the selected device storage unit 24E are loaded into the working memory 23C. Furthermore, the revised utility cost calculation unit 25F included in the program unit 25 is loaded into the working memory 23C. The revised utility cost calculation unit 25F is a program for calculating the revised utility cost, which is the approximate utility cost of at least one dwelling unit 4 for the rental apartment complex 1 in the revised specifications 32 shown in FIG. 2. The revised utility cost calculation unit 25F is executed by the calculation unit 23A, thereby allowing the computer 19 to function as a means for calculating the revised utility cost.

[0103] The revised utility fee can be calculated appropriately, for example, based on a known procedure. In this embodiment, the revised utility fee can be calculated based on the basic utility fee and a predetermined correction coefficient F1 that is multiplied by the basic utility fee. For example, the following (2) is used to calculate the revised utility fee. C2 = C1 - (C1 × F1) … (2) Where: C2: Revised utility costs for one residence (yen / year) C1: Basic utility costs for one residence (yen / year) F1: Correction factor

[0104] The correction coefficient F1 indicates the percentage of the utility cost reduction relative to the basic utility cost C1 due to the addition of the selected device 14 and / or equipment 15 (shown in FIG. 6). The basic utility cost C1 can be multiplied by such correction coefficient F1 to calculate the utility cost that can be reduced by adding the selected device 14 and / or equipment 15. Then, the revised utility cost C2 can be calculated by subtracting this reduced utility cost (C1×F) from the basic utility cost C1.

[0105] In this embodiment, prior to carrying out the proposed method, it is preferable to specify a correction coefficient F1 for each of the multiple types of devices 14 and equipment 15. An example of the correction coefficient F1 for each of the devices 14 and equipment 15 is as follows. Correction coefficient F1 for heat pump water heaters: 0.11 Correction coefficient for storage device F1: 0.10 Correction factor F1 of V2H device: 0.15 Air conditioning equipment correction factor F1: 0.04

[0106] The correction coefficient F1 may be appropriately determined. For example, the correction coefficient F1 may be determined according to the ratio of electricity generated by the photovoltaic power generation device to the total power consumption of each device 14 and facility 15. In addition, the correction coefficient F1 may be determined by calculating (or measuring) the basic utility fee C1 and the revised utility fee C2 in any rental apartment (not shown) to which each device 14 or facility 15 is added, and dividing the difference between them (C1-C2) by the basic utility fee C1.

[0107] As described above, in this embodiment, 84,108 yen / year is calculated as the basic utility cost C1. For example, as shown in Fig. 6, when the heat pump water heater 14A is selected, 84,108 yen / year is substituted for the basic utility cost C1 in the above formula (2), and 0.11 is substituted for the correction coefficient F1. As a result, 74,856 yen / year can be calculated as the revised utility cost C2 when the heat pump water heater 14A is added.

[0108] In step S5, for example, when two or more devices 14 and / or facilities 15 are selected, it is preferable to substitute the value obtained by adding the above-mentioned correction coefficient F1 for the selected devices 14 and / or facilities 15 into the correction coefficient F1 in the above formula (1). For example, when the heat pump water heater 14A and the power storage device 14B are selected, the value obtained by adding the correction coefficients F1 for them (0.21 in this example) can be substituted into the correction coefficient F1 in the above formula (2). In this way, the revised utility cost C2 for the revised specifications 32 to which two or more devices 14 and / or facilities 15 are added can be calculated.

[0109] The revised utility cost is input to the revised utility cost storage unit 24F (computer 19) by the revised utility cost calculation unit 25F shown in FIG.

[0110] [Determine the amount of increase to be added to the basic rent] Next, in the proposed method of this embodiment, the computer 19 (shown in FIG. 1) determines at least a part of the difference between the basic utility fee and the revised utility fee as an increase to be added to the basic rent (step S7).

[0111] In step S7, first, the basic utility fee stored in the basic utility fee storage unit 24C shown in Fig. 3, the revised utility fee stored in the revised utility fee storage unit 24F, and the increase calculation unit 25G included in the program unit 25 are loaded into the working memory 23C. The increase calculation unit 25G is a program for determining at least a part of the difference between the basic utility fee and the revised utility fee as an increase to be added to the basic rent. By executing this increase calculation unit 25G by the calculation unit 23A, the computer 19 can function as a means for determining the increase to be added to the basic rent.

[0112] In step S7 of this embodiment, first, the difference (C1-C2) between the basic utility fee C1 and the revised utility fee C2 is calculated. As described above, the basic utility fee C1 and the revised utility fee C2 are the utility fees for one year incurred in one dwelling unit 4. Therefore, the difference (C1-C2) is calculated as the utility fee that can be reduced in one year in one dwelling unit 4 by adding the selected device 14 and / or equipment 15 (shown in FIG. 6).

[0113] As described above, for example, if the basic utility cost C1 is 84,108 yen / year and the revised utility cost C2 is 74,856 yen / year, the difference (C1-C2) is 9,252 yen / year. In this case, for one dwelling unit 4 with revised specifications 32 to which heat pump water heater 14A is added, the utility cost that can be reduced in one year is calculated to be 9,252 yen.

[0114] If the difference (in this example, 9,252 yen / year) is added directly to the basic rent for one year for one dwelling unit 4 (in this example, 1,032,000 yen / year) and determined as the rent under revised specifications 32, it will be difficult to ensure the benefits to the resident. This is because it is offset by the utility costs (in this example, 9,252 yen / year) that can be reduced by the selected device 14 and / or equipment 15 (in this example, heat pump water heater 14A).

[0115] On the other hand, if a value significantly smaller than the above difference (in this example, 9,252 yen / year) is added to the basic rent for one year for one dwelling unit 4 (in this example, 1,032,000 yen / year) and this is determined as the rent under revised specification 32, the profitability of the owner, etc. will decrease.

[0116] In step S7 of this embodiment, in order to determine an increase that can improve the profitability of the owner, etc. while ensuring benefits to the residents, the above difference (in this example, 9,252 yen / year) is multiplied by a predetermined coefficient F2 to determine the increase to be added to the basic rent.

[0117] The coefficient F2 can be set to, for example, 0.3 to 0.9, taking into consideration the merits to the residents and the profitability of the owner, etc. By multiplying the difference (9,252 yen / year in this example) by such coefficient F2, an increase in the basic rent that can improve the profitability of the owner, etc. while ensuring the merits to the residents can be determined.

[0118] As described above, the difference (C1-C2) is the amount of utility costs that can be reduced in one year for one dwelling unit 4. The increase in basic rent determined by multiplying such difference (C1-C2) by coefficient F2 is determined as the increase in basic rent for one year for one dwelling unit 4. For example, if the difference (C1-C2) is 9,252 yen / year and coefficient F2 is 0.9, the increase in basic rent is determined as 8,327 yen / year.

[0119] In this manner, in this embodiment, the increase in the basic rent is determined to be smaller than the difference (C1-C2), thereby preventing the increase from being offset by the utility costs that can be reduced by the selected device 14 and / or equipment 15 (shown in FIG. 6) (i.e., the difference (C1-C2)). This ensures benefits to residents. Furthermore, since the difference between the difference (C1-C2) and the increase is small, the profitability of owners, etc. can be maintained. The increase is input into the increase memory unit 24G (computer 19) by the increase calculation unit 25G shown in FIG. 3.

[0120] [Calculate information on rent for revised specifications] Next, in the proposed system 20 of this embodiment, the computer 19 (shown in FIG. 3) calculates information regarding the rent for the rental apartment complex 1 under the revised specifications 32 shown in FIG. 2 based on the basic rent and the increase (step S8).

[0121] In step S8 of this embodiment, the basic rent stored in the basic rent storage unit 24B shown in Fig. 3, the increase stored in the increase storage unit 24G, and the revised rent calculation unit 25H included in the program unit 25 are loaded into the working memory 23C. The revised rent calculation unit 25H is a program for calculating information on the rent of the rental apartment house 1 in the revised specifications 32 shown in Fig. 2 based on the basic rent and the increase. By executing this revised rent calculation unit 25H by the calculation unit 23A, the computer 19 can function as a means for calculating information on the rent of the rental apartment house 1 in the revised specifications 32.

[0122] In step S8 of this embodiment, the basic rent stored in step S2 and the increase determined in step S7 are added together. This calculates the rent for the rental apartment complex 1 in the revised specifications 32 shown in FIG. 2 (hereinafter, sometimes referred to as the "revised rent"). As described above, the basic rent is determined as one year's rent for one dwelling unit 4 in the basic specifications 31, and the increase is determined as an increase in the one year's basic rent for one dwelling unit 4. Therefore, the revised rent is calculated as one year's rent for one dwelling unit 4 in the revised specifications 32.

[0123] In this embodiment, if the basic rent is 1,032,000 yen / year and the increase in the basic rent is 8,327 yen / year, the revised rent is calculated as 1,040,300 yen / year.

[0124] As described above, in step S8 of this embodiment, the increase in the basic rent is determined taking into consideration the benefits to the residents and the profitability of the owner, etc. By adding such an increase to the basic rent, a rent (revised rent) that improves the profitability of the owner, etc. while ensuring the benefits to the residents through reduced utility costs can be easily determined. Such revised rent can be calculated as information regarding the rent of the rental apartment complex 1 in revised specifications 32 (hereinafter, sometimes referred to as "information regarding revised rent").

[0125] The information on the revised rent is not limited to the revised rent. The information on the revised rent may include, for example, at least one of the annual rental income of the rental apartment 1 with the revised specifications 32, the purchase price of the rental apartment with the revised specifications 32, and the yield, which is the ratio of the annual rental income to the purchase price.

[0126] The annual rental income can be calculated by multiplying the revised rent by the total number of units in the rental apartment complex 1. In this embodiment, if the revised rent is 1,040,300 yen / year and the total number of units is 6, the annual rental income can be calculated as 6,241,800 yen.

[0127] Annual rental income is useful for evaluating the profitability of owners, etc. Therefore, annual rental income is important information for owners, etc. who decide to purchase a rental apartment building 1 with the revised specification 32 shown in Figure 2.

[0128] The purchase price of the rental apartment building 1 with revised specifications 32 can be calculated by adding the purchase price of the rental apartment building 1 with basic specifications 31 shown in FIG. 1 and the total purchase price of the selected devices 14 and / or equipment 15 (shown in FIG. 6).

[0129] The purchase price of the rental apartment building 1 with basic specifications 31 can be calculated by adding the purchase price of the rental apartment building 1 (excluding the purchase prices of the solar power generation device 3, device 14, and equipment 15) and the purchase price of the solar power generation device 3. As described above, in this embodiment, the purchase price of the rental apartment building 1 is 60 million yen, and the purchase price of the solar power generation device 3 is 5.25 million yen. In this case, the purchase price of the rental apartment building 1 with basic specifications 31 can be calculated as 65.25 million yen.

[0130] As shown in FIG. 6, when the heat pump water heater 14A is selected, the total purchase price (total additional price) of the heat pump water heater 14A is calculated as 900,000 yen, as described above.

[0131] In this embodiment, the purchase price of the rental apartment 1 with the basic specifications 31 shown in Fig. 1 (65.25 million yen in this example) is added to the purchase price of the device 14 and / or equipment 15 selected in Fig. 6 (total additional price of the heat pump water heater 14A: 900,000 yen). As a result, the purchase price of the rental apartment 1 with the revised specifications 32 shown in Fig. 2 can be calculated as 66.15 million yen.

[0132] The purchase price (66,150,000 yen in this example) of the rental apartment 1 with the revised specifications 32 is useful for comparison with the budget of the owner, etc. Therefore, the purchase price is important information for the owner, etc. who decides to purchase the rental apartment 1 with the revised specifications 32.

[0133] The yield can be calculated by dividing the annual rental income by the purchase price. In this embodiment, if the annual rental income is 6,241,800 yen and the purchase price is 66,150,000 yen, the yield can be calculated as 9.44%. Such a yield is useful for evaluating the profitability of the owner, etc. Therefore, the annual rental income is important information for the owner, etc. who decides to purchase the rental apartment complex 1 with the revised specifications 32.

[0134] Information relating to the rent of the rental apartment house 1 in the revised specifications 32 (including the revised rent, annual rental income, purchase price, and yield in this example) is important information for an owner or the like who decides to purchase the rental apartment house 1 in the revised specifications 32. This information relating to the revised rent is input into the revised rent storage unit 24H (computer 19) by the revised rent calculation unit 25H shown in FIG. 3.

[0135] [Output information on rent for rental apartment complexes with revised specifications] Next, in the method proposed in this embodiment, computer 19 (shown in Fig. 1) outputs information regarding the rent of rental apartment 1 based on revised specifications 32 shown in Fig. 2 (step S9). In this embodiment, information regarding the rent of rental apartment 1 based on revised specifications 32 is displayed on display device (display device) 22 shown in Fig. 3, but the present invention is not limited to this form and may be printed, for example, via a printer.

[0136] In step S9 of this embodiment, information relating to the rent of the rental apartment 1 under the revised specifications 32 stored in the revised rent storage unit 24H shown in FIG. 3 (including the revised rent, annual rental income, purchase price, and yield in this example) is loaded into the working memory 23C. Furthermore, the output unit 25J included in the program unit 25 is loaded into the working memory 23C. The output unit 25J is a program for outputting information relating to the rent of the rental apartment 1 under the revised specifications 32. By executing this output unit 25J by the calculation unit 23A, the computer 19 can function as a means for outputting information relating to the rent of the rental apartment 1 under the revised specifications 32.

[0137] Fig. 7 is a diagram showing an example of a screen on which information 37 relating to the rent of the rental apartment complex 1 under the revised specifications 32 is output. As shown in Fig. 7, annual rental income 37A under the revised specifications 32 is output as information 37 relating to the revised rent. By outputting such annual rental income 37A, the income of the owner, etc. after the revised specifications can be ascertained, and the profitability of the owner, etc. can be evaluated.

[0138] In FIG. 7, the purchase price 37B and the yield 37C of the rental apartment complex 1 based on the revised specifications 32 are output as information 37 on the revised rent. Outputting the purchase price 37B is useful for comparing with the owner's budget. Outputting the yield 37C is useful for evaluating the profitability of the owner.

[0139] Reducible utility costs 37D may be output as information 37 on revised rent. Outputting such utility costs 37D allows the owner, etc., to understand the utility costs that can be reduced by adding the selected device 14 or equipment 15 (in this example, heat pump water heater 14A). Furthermore, it becomes possible to present the basis for increasing annual rental income 37A from basic specifications 31.

[0140] In this way, in step S9 of this embodiment, the information 37 regarding the revised rent is output, allowing the owner, etc. to understand important information for deciding to purchase the rental apartment complex 1 with the revised specifications 32. Therefore, the construction company can smoothly advance negotiations with the owner, etc., and furthermore, it becomes possible to propose a rental apartment complex 1 that is highly satisfactory to the owner, etc.

[0141] In this embodiment, annual rental income 38A, purchase price 38B, and yield 38C are output as information 38 relating to rent for the rental apartment complex 1 in the basic specifications 31. This makes it possible to compare information relating to rent between the basic specifications 31 and the revised specifications 32.

[0142] In this embodiment, information 39 relating to the specifications of the rental apartment complex 1 is output. This enables the construction company to present the basis for calculation of the information 37 and 38 relating to rent to the owner, etc.

[0143] [Deciding whether to purchase] Next, in the method proposed in this embodiment, it is determined whether the owner or the like has decided to purchase the rental apartment complex 1 based on the revised specifications 32 (step S10).

[0144] In step S10 of this embodiment, first, a judgment unit 25K included in the program unit 25 shown in Fig. 3 is loaded into the working memory 23C. The judgment unit 25K is a program for judging whether or not the owner has decided to purchase the rental apartment 1 based on the revised specifications 32. By executing this judgment unit 25K by the calculation unit 23A, the computer 19 can function as a means for judging whether or not the owner has decided to purchase the rental apartment 1 based on the revised specifications 32.

[0145] It is determined as appropriate whether the owner, etc. has decided to purchase the rental apartment complex 1 with the revised specifications 32. For example, when the "Next" button 41 shown in Fig. 7 is pressed, it may be determined that the owner, etc. has decided to purchase the rental apartment complex 1 with the revised specifications 32. On the other hand, when the "Back" button 42 shown in Fig. 7 is pressed, it may be determined that the owner, etc. has not decided to purchase the rental apartment complex 1 with the revised specifications 32.

[0146] If it is determined that a decision has been made to purchase the rental apartment building 1 with the revised specifications 32 ("Yes" in step S10), the rental apartment building 1 with the revised specifications 32 is constructed (step S11). On the other hand, if it is determined that a decision has not been made to purchase the rental apartment building 1 with the revised specifications 32 ("No" in step S10), steps S5 to S10 are carried out again.

[0147] In this embodiment, in step S5 that is performed again, a plurality of types of devices 14 and / or equipment 15 are selected again. This enables the construction company to propose a rental apartment building 1 that is more convincing to the owner or the like.

[0148] In step S7, which is performed again, the coefficient F2 by which the difference (C1-C2) is multiplied may be changed. This makes it possible to determine a rent that is more acceptable to the owner, etc.

[0149] Although a particularly preferred embodiment of the present invention has been described in detail above, the present invention is not limited to the illustrated embodiment and can be modified and carried out in various forms.

[0150] [Note] The present invention includes the following aspects.

[0151] [Invention 1] A system for proposing a rental apartment complex equipped with a solar power generation device to a target person, A basic specification storage unit that stores basic specifications of the rental apartment complex; a basic rent storage unit that stores a basic rent for the rental apartment complex based on the basic specifications; A basic utility cost calculation unit that calculates a basic utility cost, which is an approximate utility cost of at least one dwelling unit included in the rental apartment complex; a self-consumption rate improvement device group storage unit that stores a plurality of types of devices and / or equipment for consuming more of the electricity generated by the solar power generation device within the rental apartment building; a selected device storage unit that stores at least one selected by the subject from the plurality of types of devices and / or facilities; a revised utility cost calculation unit that calculates a revised utility cost, which is an approximate utility cost for the at least one dwelling unit, for the rental apartment building with a revised specification in which the selected device and / or the equipment is added to the basic specification; An increase calculation unit that determines at least a part of the difference between the basic utility fee and the revised utility fee as an increase to be added to the basic rent; a revised rent calculation unit that calculates information regarding the rent of the rental apartment building under the revised specifications based on the basic rent and the increased amount; and an output unit that outputs the information. A proposal system for rental apartment complexes. [Invention 2] The proposed system for rental apartment buildings described in present invention 1, wherein the revised utility cost calculation unit calculates the revised utility cost based on the basic utility cost and a predetermined correction coefficient by which the basic utility cost is multiplied. [Invention 3] The proposed system for a rental apartment building according to claim 1 or 2, wherein the device includes at least one of a heat pump water heater, an electricity storage device, and a V2H device. [Invention 4] The rental apartment complex includes a common area, The system for proposing rental apartment buildings according to any one of claims 1 to 4, wherein the facilities include an air conditioning facility for the common area. [Invention 5] A rental apartment proposal system as described in any one of claims 1 to 4, wherein the information includes at least one of the annual rental income of the rental apartment building with the revised specifications, the purchase price of the rental apartment building with the revised specifications, and the yield which is the ratio of the annual rental income to the purchase price. [Explanation of symbols]

[0152] 1. Rental housing complex 3. Solar power generation equipment 4 Dwellings 14 Equipment 15 Equipment 32 Revised specifications

Claims

1. A system for proposing a rental apartment complex equipped with a solar power generation device to a target person, A basic specification storage unit that stores basic specifications of the rental apartment complex; a basic rent storage unit that stores a basic rent for the rental apartment complex based on the basic specifications; A basic utility cost calculation unit that calculates a basic utility cost, which is an approximate utility cost of at least one dwelling unit included in the rental apartment complex; a self-consumption rate improvement device group storage unit that stores a plurality of types of devices and / or facilities for consuming more of the electricity generated by the solar power generation device within the rental apartment complex; a selected device storage unit that stores at least one selected by the subject from the plurality of types of devices and / or facilities; a revised utility cost calculation unit that calculates a revised utility cost, which is an approximate utility cost for the at least one dwelling unit, for the rental apartment building with a revised specification in which the selected device and / or the equipment is added to the basic specification; An increase calculation unit that determines at least a part of the difference between the basic utility fee and the revised utility fee as an increase to be added to the basic rent; a revised rent calculation unit that calculates information regarding the rent of the rental apartment building under the revised specifications based on the basic rent and the increased amount; and an output unit that outputs the information. A proposal system for rental apartment complexes.

2. The rental apartment proposal system according to claim 1 , wherein the revised utility cost calculation unit calculates the revised utility cost based on the basic utility cost and a predetermined correction coefficient by which the basic utility cost is multiplied.

3. The rental apartment proposal system according to claim 1 , wherein the device includes at least one of a heat pump water heater, an electricity storage device, and a V2H device.

4. The rental apartment complex includes a common area, The rental apartment proposal system according to claim 1 , wherein the facilities include air conditioning equipment in the common area.

5. A rental apartment proposal system as described in any one of claims 1 to 4, wherein the information includes at least one of the annual rental income of the rental apartment building with the revised specifications, the purchase price of the rental apartment building with the revised specifications, and a yield which is the ratio of the annual rental income to the purchase price.

Images