Construction project management system and construction project management method

Abstract

This system provides a construction project management system and method that improves the productivity and convenience of construction contractors (craftsmen and construction companies) undertaking construction work, and contributes to improving the social status of craftsmen. [Solution] The construction project management system 1 comprises an electronic information terminal 8 for construction contractors, an electronic information terminal 11 for material suppliers, a material ordering and receiving platform 7, and a cost management means 3 for managing the costs of construction work and material sales for projects managed by the management company. The construction contractor's electronic information terminal 8 comprises a construction order receiving means 9 and a material ordering means 10. The materials ordered by the material ordering means 10 include materials related to projects managed by the management company and materials related to other projects. The cost management means 3 has the function of calculating the payment to the construction contractor by offsetting the material costs incurred by the construction contractor for materials ordered by the construction contractor from the material suppliers via the ordering and receiving platform 7, from the construction costs incurred for projects managed by the management company that the construction contractor has carried out.

Description

Technical Field

[0001] The present invention relates to a system for managing a construction business that performs construction work that requires the work of construction workers. It also relates to a construction business management method using this system.

Background Art

[0002] Craft workers (hereinafter also referred to as "skilled workers") in the construction industry and the like are divided into a wide variety of specialized fields. Typical job types include interior finishers, carpenters, plasterers, steelworkers, plumbers, electricians, painters, and the like. Each craft worker has advanced technology and specialized knowledge in their specific field and is a worker who mainly works on-site, making use of manual and practical and skilled techniques. Craft workers require a long time and experience to acquire technology, and as a result, they are often responsible for work that requires high quality and accuracy. Also, craft workers have the role of inheriting the knowledge and technology obtained through their work to the next generation.

[0003] The Japanese construction industry has a long history and tradition, and the skills of the craft workers cultivated within it are highly regarded worldwide. However, in modern times, several problems have emerged.

[0004] The worsening shortage of skilled workers is one of the biggest challenges facing Japan's construction industry. Due to the declining birthrate and aging population, the number of young workers on construction sites is decreasing, and as experienced workers retire, the transfer of skills is becoming increasingly difficult. As a result, the shortage of skilled workers is becoming more pronounced on sites, raising concerns about project delays and increased costs. One of the reasons for this worsening shortage is the low social status of skilled workers. The unit price for a job paid by a skilled worker is almost the same regardless of whether they are experienced or novice. Furthermore, there is no adequate system to properly evaluate the skills possessed by skilled workers. Consequently, the annual income of skilled workers has tended to decline since the collapse of the bubble economy, with little prospect of it rising. As a result, younger generations are shying away from the industry, and the number of new entrants is decreasing. If the current situation is left unchecked, there is a risk that skilled workers will eventually disappear, or that only those with inferior skills—those who cannot be called skilled workers—will remain.

[0005] Furthermore, improving working conditions is also a crucial issue. The construction industry involves many physically demanding tasks, and long working hours are often the norm. This environment is one of the factors hindering the entry of younger generations, and work-style reforms are needed throughout the construction industry. In addition, as seen in the "2024 problem," correcting long working hours is an urgent matter in the construction industry, and even if there is some increase in construction unit prices, if efforts are not made to further improve the efficiency of operations, it may lead to the elimination of construction management companies that manage workers, and ultimately worsen the environment surrounding workers.

[0006] To address these challenges, technologies have been proposed that improve operational efficiency through the introduction of digital technologies and automation. For example, Patent Document 1 proposes an interior construction management system that allows stakeholders to centrally and efficiently place orders, accept orders, and carry out work in interior construction such as restoration work, while simultaneously achieving cost clarification and reduction. In this system, dimensions within the property are set based on drawing information of the property provided by the client and 360° photographs taken by the system's management company or VR images generated from 360° photographs. The system then selects the necessary products for restoration and creates / recreates estimates. Furthermore, this system has a function that allows the client to register and update evaluations of interior construction workers (evaluations of craftsmen) after the completion of the restoration work process, and to display the updated evaluations.

[0007] Furthermore, Patent Document 2 proposes a system that allows users (such as individuals) to directly request renovation work from craftsmen and construction companies, and that also makes it easier for craftsmen to obtain materials. This system is a renovation matching system for matching clients with contractors, and comprises a user-side device used by the client, a contractor-side device used by the contractor, a product-ordering-side device for receiving orders for materials, and a management server connected to the user-side device, contractor-side device, and product-ordering-side device via a network. In this system, the contractor-side device can order materials to be used in the construction from the product-ordering-side device via the management server, based on the material information applied by the client-side device. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2020-155124 [Patent Document 2] Japanese Patent Publication No. 2023-106054 [Overview of the project] [Problems that the invention aims to solve]

[0009] However, while various systems such as those described in Patent Documents 1 and 2 have been proposed, in reality, the progress of ICT adoption across the industry as a whole is slow, hindering productivity improvements in this sector. While major general contractors and primary subcontractors may be somewhat more advanced, small construction companies and individual contractors at the lower levels often primarily use fax and telephone for data transfer and communication. Even if face-to-face meetings are acceptable for discussing construction work, tasks such as scheduling work progress and ordering materials are still handled by returning to the office or home to create documents, send faxes, and make phone calls. The same applies to creating and submitting daily work reports after construction is complete. Unless these inefficiencies are urgently addressed, productivity improvements cannot be expected, nor can the long working hours and increased incomes of skilled workers be expected, nor will their social status improve easily.

[0010] Patent Document 1 allows for the evaluation of craftsmen, but it can be described as a digitalization of analog questionnaires, and may not directly lead to improvements in the working environment of craftsmen (increased productivity). Patent Document 2 allows for the ordering of materials via a management server, but there seems to be room for improvement in terms of convenience such as cost settlement, the range of material information that can be handled, and the improvement of craftsman evaluation.

[0011] This invention has been made in view of these circumstances, and aims to provide a construction project management system and construction project management method that can improve the productivity of construction contractors (craftsmen and construction companies) who undertake construction work. In addition to the above, it also aims to provide a construction project management system and construction project management method that contribute to improving the social status of craftsmen. [Means for solving the problem]

[0012] The present invention relates to a construction project management system used by a management company, a construction contractor that undertakes construction work, and a materials supplier that sells materials. The system comprises an electronic information terminal operated by the construction contractor, an electronic information terminal operated by the materials supplier, a platform for ordering and receiving materials managed by the management company, and cost management means for managing the costs of construction work and the buying and selling of materials managed by the management company. The construction contractor's electronic information terminal includes a construction order means for receiving construction instructions from the management company, and a means for receiving instructions from the construction contractor via the order and receiving platform. The system is characterized by having a material ordering means for placing orders for materials, the materials ordered by the material ordering means include materials related to construction work managed by the management company and materials related to other construction work, the electronic information terminal of the material supplier has a material receiving means for receiving material orders from the construction company via the order receiving platform, and the cost management means has a function for calculating the payment costs to the construction company by offsetting the material costs for materials ordered by the construction company from the material supplier via the order receiving platform from the construction costs for construction work managed by the management company that the construction company has performed.

[0013] The above-described construction project management system includes an evaluation management means for managing the evaluation value of the above-described construction contractor, and the evaluation management means is characterized by being a means for adding a predetermined evaluation value to the above-described construction contractor in accordance with the construction costs incurred for the construction work performed by the above-described management company and the material costs incurred for the materials ordered by the above-described order placement platform.

[0014] Furthermore, the above-mentioned cost management means is characterized by having a function to adjust the material costs incurred by the contractor for materials ordered by the contractor through the above-mentioned order placement platform, according to the contractor's evaluation value.

[0015] The above-mentioned construction project management system is characterized by having individual information management means for registering information including at least identification information of the above-mentioned construction contractor.

[0016] The above-described construction project management system is characterized by having a work recording means that receives and records the details of the work performed by the construction company from the electronic information terminal of the construction company.

[0017] The present invention relates to a construction project management method used by a management company, a construction company that undertakes construction work, and a materials supplier that sells materials, and utilizes a construction project management system that includes an electronic information terminal operated by the construction company, an electronic information terminal operated by the materials supplier, a platform for ordering and receiving materials managed by the management company, and cost management means for managing the costs related to the construction work and the buying and selling of materials managed by the management company, wherein the materials supplier registers materials on the ordering and receiving platform using the materials supplier's electronic information terminal, or the management company registers materials on the ordering and receiving platform based on information from the materials supplier. The system is characterized by comprising: a registration step; a construction order step in which the construction contractor receives instructions regarding the construction from the management company on the construction contractor's electronic information terminal; a materials ordering step in which the construction contractor places an order with the materials supplier via the order placement platform for at least one of the materials related to the construction managed by the management company and materials related to other construction; and a cost calculation step in which the management company uses the cost management means to calculate the payment to the construction contractor by offsetting the cost of materials ordered by the construction contractor via the order placement platform from the construction costs related to the construction managed by the management company that the construction contractor has performed.

[0018] The above construction project management method includes an evaluation value calculation step for calculating the evaluation value of the above construction contractor, and the evaluation value calculation step is characterized by adding a predetermined evaluation value to the above construction contractor according to the construction costs for the work performed by the above construction contractor and managed by the above management company, and the material costs for the materials ordered by the above construction contractor through the above ordering platform.

[0019] Furthermore, the above cost calculation step is characterized by adjusting the material costs for materials ordered by the contractor through the above order placement platform according to the contractor's evaluation value. [Effects of the Invention]

[0020] The construction project management system and construction project management method of the present invention have the above-described configurations and include an ordering and receiving platform for materials managed by a management company (including materials related to construction projects managed by the management company and materials related to other construction projects), and a material ordering means for construction companies to order materials through this ordering and receiving platform, so that construction companies (craftsmen and construction companies) can easily obtain construction-related materials. In particular, even if the construction company is a sole proprietor craftsman, they can use the ordering and receiving platform for materials managed by the management company and use it to procure materials for their own construction projects. As a result, construction companies can benefit from a wider range of material information that they can handle, the ability to place individual orders regardless of construction projects managed by the management company, and other benefits, such as improved productivity and convenience for construction companies.

[0021] Furthermore, the system includes a means for receiving construction orders from management companies via the construction company's electronic information terminal, and a cost management means within the management system that calculates payment to the construction company by offsetting the cost of materials ordered by the construction company from material suppliers via the ordering platform against the construction costs incurred by the construction company for work managed by the management company. Therefore, it offers superior convenience for construction companies when undertaking construction work for management companies, particularly in terms of cost settlement.

[0022] Furthermore, as evaluation management means for managing the evaluation values of construction contractors, by having means for adding a predetermined evaluation value to the construction contractor according to the construction costs of the projects constructed by the construction contractor and the material costs of the materials ordered by the construction contractor via the order receiving and placing platform, evaluations from both directions of material procurement and project construction can be accumulated, leading to an improvement in the evaluation of the craftsmen. Regarding the evaluation corresponding to material procurement, for any materials related to the projects managed by the management contractor and materials related to other projects, it is added according to the material costs of the materials ordered via the order receiving and placing platform. Therefore, the more the construction contractor uses the management system, the more the evaluation can be accumulated and improved. Also, regarding the evaluation corresponding to project construction, among the projects constructed by the construction contractor, it is added according to the construction costs of the projects managed by the management contractor. Therefore, the more projects the construction contractor undertakes via the management system, the more the evaluation value can be accumulated and improved.

[0023] In addition, the cost management means has a function of correcting the material costs of the materials ordered by the construction contractor via the order receiving and placing platform according to the evaluation value of the construction contractor. Therefore, the higher the evaluation value of the construction contractor, the more it can purchase at a corrected price (for example, a discount) regarding material costs and the like.

[0024] Moreover, the construction business management system has individual information management means for registering information including at least the identification information of the construction contractor, so smooth transactions can be carried out between the construction contractor and the management contractor and others.

[0025] In addition, the construction business management system has work recording means for receiving and recording the work content of the projects constructed by the construction contractor from the electronic information terminal of the construction contractor. Therefore, the construction contractor can easily save the work records and, by sharing them with the management contractor, the management contractor can appropriately check the progress of the project and the like on their side.

Brief Description of the Drawings

[0026] [Figure 1] It is a schematic diagram showing an example of the configuration of the construction business management system of the present invention. [Figure 2] This is a conceptual diagram of the construction project management system and other related components of the present invention. [Figure 3] This is a conceptual diagram of the construction project management system (interior construction) of the present invention. [Figure 4] This figure shows examples of cost management and evaluation management methods. [Figure 5] This figure shows other examples of cost management and evaluation management methods. [Figure 6] This flowchart illustrates an example of the construction project management method of the present invention. [Modes for carrying out the invention]

[0027] An example of the configuration of the construction project management system of the present invention will be explained with reference to Figure 1. Figure 1 is a schematic diagram of the configuration of the construction project management system. As shown in Figure 1, the construction project management system 1 of the present invention comprises an electronic information terminal 8 operated by the construction contractor, an electronic information terminal 11 operated by the material supplier, a material ordering and receiving platform 7 connected to each electronic information terminal and managed by the management company, and a cost management means 3 for managing the costs related to the construction work and the buying and selling of materials managed by the management company. In the configuration shown in Figure 1, the ordering and receiving platform 7 and the cost management means 3 are operated on the management company's server 2.

[0028] In this invention, "connecting" electronic information terminals 8, 11, order placement platform 7, server 2, etc., means connecting them via a network 14, which is an electronic communication line capable of sending and receiving data. Examples of usable networks include wired LAN, wireless LAN, WAN, and the internet. Furthermore, "storing" or "registering" information on the server, electronic information terminal, or platform means storing it in a predetermined format within a storage medium such as semiconductor memory or magnetic disk on the server or electronic information terminal. In addition, in this invention, when sending and receiving information between the electronic information terminal and the server, it is preferable to use SSL or to perform predetermined encryption before transmission, taking into consideration the prevention of information leakage and privacy.

[0029] Server 2 on the management company's side is not particularly limited and can be any server connected to network 14. For data aggregation and operation purposes, the management company may provide its own server, or for robustness reasons, it may use a private (other than its own) server. If the management company uses a server other than its own as Server 2, it will connect to the server from its own electronic information terminal to manage and use this management system. In the configuration shown in Figure 1, each of the means such as cost management means 3, evaluation management means 4, individual information management means 5, and work record means 6 resides on Server 2, but this is not limited to this configuration. Servers may be separated for each means, or processing may be done on the management company's electronic information terminal.

[0030] Server 2's storage medium stores order history and contractor evaluation values ​​obtained from system execution, which are then compiled into a database according to prescribed rules. The management company can appropriately configure the storage location of the necessary data (server side, electronic information terminal side, etc.).

[0031] Cost management means 3 has a function (offsetting function) that calculates the payment to the contractor by offsetting the cost of materials ordered by the contractor from material suppliers via the order placement platform 7 against the construction costs incurred for the construction work managed by the management company that the contractor performed. Cost management means 3 also has a function to simply calculate the cost of materials ordered by the contractor from material suppliers via the order placement platform 7. Details of the offsetting function in cost management means 3 will be described later.

[0032] The evaluation management means 4 is a means of adding a predetermined evaluation value to a contractor based on the construction costs incurred by the contractor for work performed by the contractor and managed by the management company, and the material costs incurred by the contractor for materials ordered by the contractor through the order placement platform 7. The evaluation management means 4 is also a means of registering and managing the evaluation value for each contractor. The evaluation value for a contractor may be, for example, an evaluation value categorized by a tiered ranking system. By accumulating and improving this evaluation value, it becomes possible to adjust and calculate construction costs, material costs, etc. For example, higher ranks can receive a positive adjustment for construction costs and a negative adjustment for material costs. In addition, preferential treatment may be given to contractors in terms of selection priority when receiving orders. Details of the evaluation method in the evaluation management means 4 when offsetting in the cost management means 3 will be described later.

[0033] Individual information management means 5 is a means for registering information that includes at least identification information of the contractor. Identification information includes information from identification documents such as My Number cards and driver's licenses. In particular, when the contractor is a self-employed craftsman, it enables smooth transactions, such as compliance with the qualified invoice system. It may also register and manage the past order and completion history of the contractor (craftsman or construction company). Furthermore, evaluations based on history can be registered in at least one of this individual information management means 5 and evaluation management means 4.

[0034] The work recording means 6 is a means of receiving and recording the details of the work performed by the contractor from the contractor's electronic information terminal 8. Work records can be registered at appropriate times, such as for daily reports or completion records upon completion. By preparing a set of input options as a form input method, contractors (especially sole proprietors) can easily save work records. Furthermore, by making these work records available for viewing by the management company, the management company can check the construction history and progress of the work as needed.

[0035] The operation of each means in the construction project management system and construction project management method of the present invention is carried out, for example, using an application that runs on an electronic information terminal (on its OS) of a management company, construction company, or materials supplier. When used via a network, the application can operate in a form in which a program written in a programming language that runs on a web browser on each electronic information terminal and a program on server 2 work in cooperation. Alternatively, it may be installed as a dedicated application on each electronic information terminal, separate from the use of a browser.

[0036] The electronic information terminals (8 and 11) are not particularly limited and include PCs used by employees of each company, dedicated terminals installed at facilities, or portable terminals such as smartphones, tablets, mobile phones, and notebook PCs. As for the electronic information terminals 8 operated by construction workers, portable terminals are preferred because they can be used on-site, and among portable terminals, smartphones are particularly preferred because they have a high penetration rate and users are often familiar with touch panel operation.

[0037] The electronic information terminal 8 operated by the construction contractor has a construction order receiving means 9 that receives construction-related instructions from the management company, and a material ordering means 10 that allows the construction contractor to order materials via the order placement platform 7. The construction order receiving means 9 can be any means capable of receiving construction-related instructions from the management company, such as email, messenger, or SNS (social networking service) applications that operate on the electronic information terminal. The material ordering means 10 can be any means capable of accessing the order placement platform 7 and ordering materials via this platform, such as a standard browser that operates on the electronic information terminal.

[0038] The electronic information terminal 11 operated by the materials supplier has a materials registration means 12 for registering materials on the order placement platform 7, and a materials order receiving means 13 for receiving material orders from construction companies via the order placement platform 7. The materials registration means 12 can be any means that allows materials to be registered on the order placement platform 7. Here, materials registration means registering sales information (model number, specifications, price information, etc.) for any materials on the order placement platform 7. As an example of the materials registration means 12, a standard browser operating on the electronic information terminal can be used as a means that allows direct access to the order placement platform 7 to register materials.

[0039] Furthermore, when a management company indirectly registers materials on the order placement platform 7 based on information from material suppliers, the material registration means 12 can be tools such as email or messenger that allow communication with the management company. In this case, the material registration means 12 on the electronic information terminal 11 is not mandatory; the management company may be asked to register the materials by telephone or fax. By providing such a wide range of options for registering materials on the order placement platform 7, it becomes possible to register not only large material suppliers such as major manufacturers, but also small and micro-suppliers that meet niche needs.

[0040] The contents of the construction project management system and construction project management method of the present invention, which have the above configuration, will be described in detail below with reference to Figures 2 and 3. Figures 2 and 3 are conceptual diagrams of the configuration of the construction project management system, and Figure 3 is a conceptual diagram for the case of interior construction work. As shown in Figures 2 and 3, the construction project management system and construction project management method of the present invention are used by construction management companies, construction companies that undertake construction work, and material suppliers that sell materials required for construction work. The term "construction work" used here for each company is used to describe the nature of each company, and each "construction work" may refer to the same construction work or to mutually different construction works.

[0041] The management company may also set a certain management fee for contractors using the management system. Furthermore, this management fee can be incorporated into the offsetting costs, as described later. Similarly, the management company may also set a certain management fee for material suppliers using the management system.

[0042] The construction project management system and construction project management method of the present invention are applicable to construction projects that are completed primarily through manual work on-site by construction contractors. There are no limitations on the licensing body (prefectural governor or Minister of Land, Infrastructure, Transport and Tourism) or the type of license (general construction business license, specific construction business license), and the system applies to a wide range of construction projects that are commonly carried out. Examples include general civil engineering works, general building construction works, carpentry works, plastering works, scaffolding, civil engineering, and concrete works, stonework, roofing works, electrical works, pipework, tile, brick, and block works, steel structure works, rebar works, paving works, dredging works, sheet metal works, glass works, painting works, waterproofing works, interior finishing works, machinery and equipment installation works, thermal insulation works, telecommunications works, landscaping works, well drilling works, joinery works, water supply facility works, fire protection facility works, cleaning facility works, and demolition works.

[0043] Within this category, interior finishing work includes, for example, interior design work, ceiling finishing work, wall covering work, interior partition work, floor finishing work, tatami and sliding door work, furniture work, and soundproofing work. Furthermore, interior finishing work, including the installation of electrical, gas, water, and air conditioning equipment, is sometimes simply referred to as "interior work."

[0044] In addition to purchasing materials related to projects managed by the management company, construction contractors can also widely use this materials ordering platform to purchase materials for projects they have separately undertaken that are not managed by the management company (for example, projects commissioned by client B), as well as other construction-related tools, equipment, and consumables. Therefore, even if a construction contractor is a sole proprietor, they can order materials from major manufacturers and other material suppliers within the scope registered on this ordering platform, and can also obtain small auxiliary materials and tools in a one-stop manner from this platform. As a result, construction contractors can improve their productivity and convenience by expanding the range of materials they can handle, enabling individual orders unrelated to projects managed by the management company, and reducing the effort required to search for materials from multiple suppliers.

[0045] The materials handled by the materials ordering and receiving platform include any materials used in various construction projects, such as raw materials, auxiliary materials, tools, and equipment. For example, materials needed for interior construction include wall materials such as gypsum board, wallpaper, paint, and tiles; flooring materials such as flooring, cushion flooring, carpet, and carpet tiles; ceiling materials such as ceiling panels and decorative panels; lighting fixtures such as downlights and chandeliers; wiring materials such as electrical wires, cables, outlets, and switches; and adhesives and bonding materials such as bond and sealant. Tools that may be needed include power tools such as impact drivers, electric drills, circular saws, and sanders; hand tools such as measuring tapes, spirit levels, hammers, cutters, spatulas, pliers, and saws; painting tools such as rollers, brushes, and masking tape; and other tools such as putty knives and step ladders.

[0046] In Figures 2 and 3, the management company receives a construction order from the client (Client A) and then places an order for the work with the contractors, such as independent contractors or construction companies. The contractor receives this construction order (instruction regarding the work) from the management company through the construction order receiving method 9 on their electronic information terminal. This type of work is considered "work managed by the management company." The management company pays the contractor the costs (payment fees) after the contractor completes the work.

[0047] The flow from the initiation to the completion of a construction project managed by a management company to which the present invention can be applied is not particularly limited and can be incorporated into general flows already implemented in each construction field. An example of a flow from the initiation to the completion of a project is as follows: (1) The management company receives a request consultation from the customer (the client ordering the construction), (2) The management company interviews the customer about the details of the request, (3) The management company creates an estimate by comparing it with past estimates and presents it to the customer, (4) The customer reviews the estimate and places an order for the construction with the management company, (5) The management company conducts on-site inspections and prepares to arrange for contractors such as sole proprietors, (6) The management company places an order for the construction with the contractor, (7) The contractor handles on-site work (the management company provides on-site support as needed), (8) The contractor reports the work to the management company, and the management company verifies the work, (9) A final completion report is given to the customer, and (10) Payment is made from the customer to the management company and from the management company to the contractor.

[0048] During construction work (on-site work) by the construction company, materials are required. The construction company places an order for the necessary materials for this construction project or for another construction project. The construction company places an order for materials via the order placement platform 7, as described above, using the material ordering means 10 on the construction company's electronic information terminal 8. If the construction project is managed by a management company, the management company may order materials specified by the client from the material supplier. The construction company receives the ordered materials directly from the material supplier or through the management company. The materials may be delivered to the site by the construction company itself, or the material supplier or management company may handle shipping or other arrangements.

[0049] The materials supplier registers the materials on the order placement platform 7. This registration can be done by the materials supplier themselves using the materials registration means 12 on the materials supplier's electronic information terminal 11, or, as described above, the management company may register the materials based on information from the materials supplier. Furthermore, the materials supplier's order for materials via the order placement platform 7 is made using the materials order means 12 on the materials supplier's electronic information terminal 11, as described above. The materials supplier provides the ordered materials to the construction company or management company that placed the order (and, in some cases, ships them to the site). The materials supplier also bills the management company for the costs associated with the ordered materials (material costs).

[0050] One feature of the construction project management system and construction project management method of the present invention is that the cost management means has a cost offsetting function within this series of configurations. This offsetting function will be explained with reference to Figures 4 and 5. Figure 4 is a diagram showing an example of cost management means and evaluation management means when a construction contractor is undertaking a construction project managed by a management company, and Figure 5 is a diagram showing an example of cost management means and evaluation management means when a construction contractor is not undertaking a construction project managed by a management company (when there are no construction costs at the time of offsetting).

[0051] As shown in Figure 4 (top), the cost management means 3 has the function of calculating the "payment cost" to the contractor by offsetting the "material cost" for materials ordered by the contractor from material suppliers via the order placement platform 7 from the "construction cost" for the construction work performed by the contractor and managed by the management company. Offsetting means offsetting mainly in monetary terms. Here, the final payment cost only needs to be calculated by offsetting the material cost from the construction cost, and there may be other offsetting costs besides the material cost. For example, in the example in Figure 4, "construction cost" - "material cost" = "payment cost", but it is not limited to this, and if there are "other costs" that the management company collects from the contractor, such as system management costs, the payment cost may also be calculated by offsetting these from the construction cost. In other words, in this case, "construction cost" - "material cost" - "other costs" = "payment cost".

[0052] The "material costs" subject to offsetting are the costs incurred by the construction company for materials ordered from material suppliers using the order placement platform, and are not limited to the costs of materials used in construction projects managed by the management company that are the counterparty to the "construction costs" for which offsetting is applied. The more frequently the construction company uses the order placement platform, the more "material costs" that can be used for offsetting will be available. Furthermore, there will be no need for individual cost settlements for individual orders, and when offset against "construction costs," the payment procedure for "material costs" can be effectively omitted. As a result, the more frequently the order placement platform is used, the more convenient cost settlement becomes, leading to a reduction in the administrative burden on the construction company, and ultimately to increased productivity for the construction company (craftsmen and construction companies). If the "material costs" are greater than the "construction costs," the construction company will naturally need to pay the difference after offsetting to the management company.

[0053] On the other hand, the "construction costs" subject to offsetting are limited to construction projects managed by the management company and contracted by the management company. In other words, while a construction company can use the ordering platform itself even if they do not receive a contract from the management company, they cannot use the offsetting function unless they perform construction work managed by the management company. In this case, as shown in Figure 5 (top), the construction company will need to pay the management company for the cost of materials. Therefore, construction companies will be motivated to actively use the management system in order to ensure the convenience provided by the offsetting function.

[0054] There are no particular limitations on the timing of offsetting and calculating the payment amount. For example, at regular intervals (e.g., every month), all "construction costs" and "material costs" within that period can be counted, and the "payment amount" can be calculated using the offsetting function described above.

[0055] Furthermore, it is preferable that cost management means 3 has a function to adjust the "material costs" incurred by the contractor for materials ordered by the contractor through the ordering platform, according to the contractor's evaluation value. In this case, as an adjustment for material costs, if the contractor's evaluation value is high, for example, it may be possible to purchase materials at a discount. As described above, since contractors can purchase materials used for projects other than those managed by the management company through the ordering platform, they can also benefit from the evaluation value when undertaking projects other than those managed by the management company. By actively using the management system to accumulate and improve their evaluation value, contractors can receive preferential treatment regarding material purchases and other matters even when undertaking other projects not tied to the management company, leading to improved productivity for contractors.

[0056] The construction project management system and construction project management method of the present invention preferably include a means for evaluating and managing construction contractors. This evaluation and management means will be explained with reference to Figure 4. As shown in Figure 4 (bottom), the evaluation management means 4 is a means of adding a predetermined evaluation value to a contractor in accordance with the "construction costs" incurred for the construction work performed by the contractor and managed by the management company, and the "material costs" incurred for the materials ordered by the contractor through the order placement platform 7. Here, "in accordance with the "construction costs" and "material costs"" means in accordance with the sum of the "construction costs" and "material costs". In other words, the "construction costs" and "material costs," which were offset when calculating the payment costs, are both added together as positive evaluations and considered as the amount added to the contractor's evaluation value.

[0057] The "material costs" included in the aggregation are the costs incurred by the construction company for materials ordered from material suppliers using the ordering platform, and are not limited to the costs of materials used in construction projects managed by the management company that are included in the aggregation as "construction costs." The more frequently a construction company uses the ordering platform, the higher its "material costs" will be, allowing it to accumulate and improve its evaluation score accordingly.

[0058] On the other hand, the "construction costs" included in the calculation are limited to construction work managed by the management company and contracted by the management company. As shown in Figure 5 (bottom), if a construction company does not undertake construction work managed by the management company, only the portion of the construction company's payment for materials will be added to the construction company's evaluation value.

[0059] By actively using this management system and performing construction work managed by the management company, contractors can significantly accumulate and improve their evaluation scores. As a result, they will receive preferential treatment not only when undertaking construction work managed by the management company, but also when undertaking other construction work not tied to the management company, such as when purchasing materials, leading to increased productivity for contractors.

[0060] There are no particular limitations on the timing of calculating the added value to the evaluation score by aggregating the costs. For example, at regular intervals (e.g., every month), all "construction costs" and "material costs" within that period can be counted, and the added value to the contractor's evaluation score can be calculated using an evaluation management system.

[0061] The evaluation value for construction contractors is not limited in format and may be calculated as a numerical value (such as an actual value) derived from each cost according to a certain standard, or as other values ​​(indicators, ranks). Classifying them into stages makes it easier for construction contractors themselves to understand their current position. Furthermore, regarding construction costs, the evaluation value (or an added amount to the evaluation value) may be calculated based on criteria that take into account various factors such as the difficulty and urgency of the work, rather than just the cost amount alone.

[0062] The flow of the construction project management method of the present invention will be explained with reference to Figure 6. Figure 6 is a flowchart showing an example of the construction project management method of the present invention. The construction project management method of the present invention is a construction project management method used by a management company, a construction company that undertakes construction work, and a materials supplier that sells materials, and is implemented using the construction project management system configured as described above, and consists of the following steps. The configuration and operation of each means, etc., are as described above.

[0063] (S1) Material registration step The material supplier (1) registers the materials on the order placement platform 7 using the material supplier's electronic information terminal 11, or (2) the management company registers the materials on the order placement platform 7 based on the information from the material supplier. The material registration step S1 is performed by the material registration means 12 as described above. There are no particular limitations on the timing of material registration, and updates are made as appropriate based on the circumstances of the material supplier. The system may also have a function to notify construction companies via the management system when a material supplier registers new materials or when materials are discontinued.

[0064] (S2) Construction Order Placement Step This step involves the contractor receiving instructions regarding the construction work from the management company via the contractor's electronic information terminal 8. The construction order step S2 is carried out using the construction order means 9 as described above.

[0065] (S3) Material ordering step The construction contractor places an order with a materials supplier via the order placement platform 7 for at least one material selected from the materials related to the construction managed by the management company and the materials related to other construction projects. The materials ordering step S3 is carried out by the materials ordering means 10 as described above. In Figure 6, the materials ordering step S3 is shown directly below the construction order step S2, but is not limited to this. For example, the materials ordering step S3 can be carried out as appropriate, and if it is carried out for a construction project other than the construction project related to the construction order step S2 (the construction project managed by the management company), it may be carried out before the construction order step S2, and may also be carried out multiple times.

[0066] (S4) Cost calculation step The management company uses cost management means 3 to calculate the payment to the contractor by subtracting the material costs incurred by the contractor for materials ordered by the contractor via the order placement platform 7 from the construction costs incurred by the contractor for the work managed by the management company. Cost calculation step S4 is carried out by cost management means 3 as described above (see Figure 4, etc.).

[0067] (S5) Evaluation value calculation step The evaluation management means 4 adds a predetermined evaluation value to the contractor based on the construction costs incurred by the contractor for the work managed by the management company, and the material costs incurred by the contractor for the materials ordered by the contractor through the order placement platform 7 (see Figure 4, etc.). The evaluation value calculation step S5 is not a mandatory step, but it is preferable to include it in order to encourage contractors and others to participate in the management system. Furthermore, the timing of the evaluation value calculation step S5 is not particularly limited, but it is preferable to perform it at the same time as the cost calculation step S4, which aggregates construction costs and material costs.

[0068] The above describes an example of the construction project management system and construction project management method of the present invention based on the figures and other information, but the present invention is not limited to these embodiments.

[0069] As explained above, the construction project management system and construction project management method of the present invention provide construction contractors (craftsmen and construction companies) with a wider range of material information they can handle, and enable individual ordering regardless of the construction project managed by the management company, thus improving the availability of construction-related materials and enhancing the productivity and convenience of construction contractors. In particular, because it has a predetermined offsetting function, it is convenient for construction contractors when settling costs, such as when undertaking construction work for the management company.

[0070] Furthermore, the offsetting function includes an evaluation function that adds the previously offset construction costs and material costs as positive evaluation points to the contractor's evaluation score. Therefore, the more a contractor uses this management system, the more they can accumulate and improve their evaluation score.

[0071] The construction project management system and construction project management method of the present invention present no major hurdles for construction companies in terms of implementation, and can be used simply by utilizing the management company's order placement and receiving platform. On the other hand, if a construction company does not undertake construction work managed by the management company, it cannot effectively utilize the offsetting and evaluation functions mentioned above. By using the management system and accepting orders for construction work from management companies, construction companies can achieve extremely high effects in terms of improving productivity and convenience. In this way, by broadening the accessibility of the management system to a large number of construction companies, it is possible to encourage adoption among small construction companies and craftsmen (sole proprietors), promote continuous use of the system, improve the productivity and convenience of these construction companies, and ultimately contribute to improving the social status of these construction companies. [Industrial applicability]

[0072] The construction project management system and construction project management method of the present invention can improve the productivity and convenience of construction contractors (craftsmen and construction companies) who undertake construction work, and contribute to improving the social status of craftsmen. Therefore, it is suitable for managing construction work that is completed mainly through manual work on-site by construction contractors, such as interior construction work. [Explanation of Symbols]

[0073] 1. Construction Project Management System 2 servers 3 Cost control measures 4. Evaluation Management Methods 5 Individual information management means 6. Work Recording Methods 7. Order Placement Platform 8. Electronic information terminals of construction companies 9. Means of receiving construction contracts 10. Methods for ordering materials 11. Electronic information terminals of material suppliers 12. Material Registration Method 13. Methods for ordering materials 14 Networks

Claims

1. A construction project management system used by management companies, construction companies that undertake construction work, and material suppliers that sell materials, The construction project management system comprises an electronic information terminal operated by the construction contractor, an electronic information terminal operated by the material supplier, a material ordering and receiving platform connected to each of the electronic information terminals and managed by the management company, and a cost management means for managing the costs related to the construction work and the buying and selling of materials managed by the management company. The electronic information terminal of the construction company has a means for receiving construction order instructions from the management company and a means for ordering materials from the construction company via the order placement platform. The materials ordered by the aforementioned material ordering means include materials related to construction work managed by the aforementioned management company and materials related to other construction work. The electronic information terminal of the materials supplier has a materials order receiving means that receives material orders from the construction company via the order receiving platform, The aforementioned cost management means has the function of calculating the payment to the contractor by subtracting the cost of materials ordered by the contractor from the material supplier via the order placement platform from the construction costs for the construction work performed by the contractor and managed by the management company. A construction project management system characterized by the following features.

2. The aforementioned construction project management system has an evaluation management means for managing the evaluation value of the construction contractor, The construction project management system according to claim 1, characterized in that the evaluation management means is a means for adding a predetermined evaluation value to the contractor in accordance with the construction costs incurred by the contractor for the construction work managed by the management company and the material costs incurred by the contractor for the materials ordered by the contractor through the order placement platform.

3. The construction project management system according to claim 2, characterized in that the cost management means has a function to correct the material costs for materials ordered by the construction company through the order placement platform according to the evaluation value of the construction company.

4. The construction project management system according to claim 1 or 2, characterized in that it has individual information management means for registering information including at least the identity information of the construction contractor.

5. The construction project management system according to claim 1 or 2, characterized in that it has work recording means for receiving and recording the details of the work performed by the construction company from the electronic information terminal of the construction company.

6. A construction project management method used by management companies, construction companies that undertake construction work, and material suppliers that sell materials, The aforementioned construction project management method utilizes a construction project management system that includes an electronic information terminal operated by the construction contractor, an electronic information terminal operated by the material supplier, a material ordering and receiving platform connected to each of the electronic information terminals and managed by the management company, and a cost management means for managing the costs related to the construction work and the buying and selling of materials managed by the management company. A material registration step in which the material supplier registers materials on the order placement platform using the material supplier's electronic information terminal, or the management company registers materials on the order placement platform based on information from the material supplier, The construction contractor receives instructions regarding the construction from the management company on the construction contractor's electronic information terminal in the construction contractor's construction order step, A material ordering step in which the construction contractor places an order with the material supplier via the order placement platform for at least one of the materials related to the construction work managed by the management company and the materials related to other construction work, The management company has a cost calculation step in which it uses the cost management means to calculate the cost payable to the construction company by subtracting the cost of materials ordered by the construction company through the order placement platform from the construction costs for the construction work managed by the management company that the construction company has performed. A construction project management method characterized by the following features.

7. The aforementioned construction project management method includes an evaluation value calculation step for calculating the evaluation value of the construction contractor, The construction project management method according to claim 6, characterized in that the evaluation value calculation step is a step of adding a predetermined evaluation value to the construction contractor in accordance with the construction costs incurred for the construction work performed by the construction contractor and managed by the management contractor, and the material costs incurred for the materials ordered by the construction contractor through the order placement platform.

8. The construction project management method according to claim 7, characterized in that the cost calculation step adjusts the material costs for materials ordered by the contractor through the order placement platform according to the contractor's evaluation value.

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