Ohio Rev. Code § 153.692: Obtaining services of criteria architect or engineer.

For every design-build contract, the public authority planning to contract for design-build services shall first obtain the services of a criteria architect or engineer by doing either of the following:

(A) Contracting for the services consistent with sections 153.65 to 153.70 of the Revised Code;

(B) Obtaining the services through an architect or engineer who is an employee of the public authority.