A parametric design system comprises an estimate generator, a layout drawing generator, and a design generator. The estimate generator for generating a cost estimate based on at least one of predetermined properties of the engineered object as defined by a request for proposal defining the engineered object, parameters associated with components of the engineered object, and engineering rules and knowledge. The layout drawing generator generates a layout drawing based on at least one of specifications of the engineered object as defined by the request for proposal, parameters associated with components of the engineered object, and engineering rules and knowledge. The design generator generates the object design based on an order and a proposal. The proposal is generated based on the cost estimate and the layout drawing. The order is generated based on the proposal.