Defense bill authorizes progressive design-build for military construction

The 2026 National Defense Authorization Act (NDAA) recently signed into law by President Donald Trump includes authorization of progressive design-build (PDB) for military construction.

It is the first time that the NDAA explicitly authorizes progressive design-build delivery for military projects. The provision establishes a clear framework for PDB, emphasizing qualifications-based, single-phase selection, and early collaboration between owners and industry partners. 

It is in harmony with The Design-Build Institute of America’s definition of Progressive Design-Build and reflects best practices already in use on complex public projects, according to an institute news release. “This development removes years of uncertainty surrounding the use of PDB in military construction, empowering owners to better manage risk, enhance cost certainty, and support early collaboration,” the release says.

The institute has long advocated for clearer authorization of Progressive Design-Build at the federal level, citing its ability to support collaboration and accountability while improving schedule and cost performance.