A Guaranteed Maximum Price (GMP) is a construction contract arrangement in which a contractor agrees to complete a project for a price that will not exceed a specified maximum amount, except in cases involving approved scope changes or unforeseen conditions defined within the contract. Commonly used in commercial real estate development, multifamily construction, and large-scale infrastructure projects, GMP contracts establish a financial ceiling intended to reduce cost uncertainty for property owners and developers. Under this structure, the contractor is typically reimbursed for actual construction costs plus a negotiated fee, while assuming responsibility for overruns that exceed the guaranteed maximum price unless otherwise contractually exempted.
In real estate development and project management, GMP agreements are widely used to improve budgeting predictability, lender confidence, and construction oversight during complex projects. Developers often employ GMP contracts after substantial design and pricing work has been completed, allowing contractors to estimate labor, materials, contingencies, and subcontractor costs with greater accuracy. The structure also encourages collaboration between developers, architects, and contractors during preconstruction phases to identify cost-saving opportunities through value engineering and scheduling coordination. Because GMP contracts allocate portions of financial risk to the contractor while maintaining flexibility for evolving project conditions, they have become a standard procurement method in institutional, mixed-use, hospitality, and large-scale residential development.
