The Consultant agrees to provide complete consultant services necessary to complete planning, design, and construction administration of the Project. 2.2 Assignment of Personnel.Consultant shall assign only competent personnel to perform services pursuant to this Agreement. AIA Document C403â„¢2021 is a standard form agreement where a client can hire a consultant to perform design assist services for a project. This Consulting Agreement, dated effective. Writing a consulting agreement may sound easy, but it can be tricky. This blog reviews the terms you should properly define in your agreement. 1. Consultant's Services. What goes into a consulting agreement? Here's how to write a contract that protects you, your business, and your clients.