Ohio Rev. Code § 153.72: Authority of design-build firm.

A design-build firm contracted for design-build services by a public authority may do either of the following:

(A) Perform design, construction, demolition, alteration, repair, or reconstruction work pursuant to such contract;

(B) Perform professional design services when contracted by a public authority for design-build services even if the design-build firm is not a professional design firm.