AIA Contract Documents has an entire Design-Build Family of documents. Visit the "Reference Material" page at www.aia.org/contractdocs/reference and click on "AIA Document Synopses". You can see a brief description of each document in this Family.
Whether it is architect-led or contractor-led, the design-build entity goes by the same name and therefore you would use the same term. For example, the design-builder would use A141 with the owner regardless of whether the D/B was an architect, a contractor, or another organization. From there, if the D/B is an architect they could use A142 with the contractor or if the D/B is a contractor they could use B143 with the architect.
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Douglas Paul
Director, Knowledge Communities
The American Institute of Architects
Washington DC
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