Generally, the scope definition package represents a design that is between 15 and 35 percent complete, although variations may begin much earlier, often with a performance specification, or much later with perhaps a 65 percent design package.
It's not unusual to see performance specifications attached to a design package that it at least 65 percent complete.
The federal government, like private corporations and other organizations, acquires facilities to support specific functions and missions and the general conduct of its business.