C421-2018

AIA Document C421™–2018 is a Master Agreement Between the Architect and Consultant. It is intended for use when the Consultant’s scope of services will subsequently be specified through the use of one or more Service Orders. C421 is suitable for use with all types of consultants, including consulting architects. C421-2018 provides only the common terms and conditions that will be applicable to each Service Order and may incorporate by reference a preexisting owner-architect agreement known as the Prime Agreement. Use of C421 plus a Service Order creates a contract, referred to as the Service Agreement, that includes both the terms and the scope of services. C421-2018 is coordinated for use with AIA Document C422™–2018, Service Order for use with Master Agreement Between Architect and Consultant. The Master Agreement plus Service Order contracting method allows multiple scopes of services to be issued quickly without the necessity to renegotiate the terms and conditions of the Service Agreements.

When to use this document?

• Establishes a master agreement with multiple service orders