The way the Pentagon buys buildings just changed. The FY2026 National Defense Authorization Act, signed into law as part of a roughly $900 billion defense package, explicitly authorizes progressive design-build for military construction for the first time. For an owner that builds billions of dollars of barracks, hangars, and labs a year, that’s a real shift in how the work gets bought.
Progressive design-build, or PDB, flips the usual sequence. Instead of locking in a price against a design that’s only partly baked, the government picks a team on qualifications, then works with that team through early design before negotiating a final price. The idea is fewer nasty surprises at guaranteed-maximum-price time, because the builder helped shape what’s being priced.
What the statute actually does
The provision sets a clean framework: qualifications-based, single-phase selection and early collaboration between the owner and its industry partner. It’s the model that’s become common on complex civil work, including the collaborative design-build procurement now moving on California’s high-speed rail program. Codifying it for defense removes the workaround gymnastics agencies used to run to get the same result.
The quieter provision may matter more
Buried alongside it, Section 2814 grants multiyear contracting authority for certain military construction projects. Annual MILCON funding has long forced big programs into awkward single-year execution windows. Multiyear authority lets the Defense Department structure delivery across phases, which helps cost control, keeps crews continuous, and makes scheduling on a large program look less like a series of cliff edges. Design-build groups lobbied for years to get both changes in writing. Now the question is how fast the services actually use them.