among many interesting comments, the question of legal agreements was raised and i wondered if the aia offered a document for architects looking to partner. c801™-1993, joint venture agreement for professional services can be used for just such an arrangement. “c801™-1993 is intended to be used by two or more parties to provide for their mutual rights and obligations in forming a joint venture. the parties may be all architects, all engineers, a combination of architects and engineers, or another combination of professionals.