A project delivery method in which a single fixed price – which encompasses both designing and constructing the project – is established when the contract is signed. FPDB is used when the owner has defined the project requirements and scope of work sufficiently for proposing firms to accurately predict the project cost early in the procurement process. The owner’s requirements, as expressed in procurement documents, may be either prescriptive- (well-defined) or performance-based, which encourages and allows more innovation on the design-builder’s part. The fixed price is an established price for a fixed scope of work and it may or may not include allowances.