Summary: B110™–2021, Standard Form of Agreement Between Owner and Architect for a Custom Residential Project


AIA Document B110–2021 is a one-part standard form of agreement between owner and architect for design and construction contract administration on a custom residential project. B110-2021 is based on B101-2017, Standard Form of Agreement Between Owner and Architect, but B110 is tailored specifically for use on a custom residential project. Services are divided into basic, supplemental, and additional services. Basic services are performed in five phases: schematic design, design development, construction documents, bidding and negotiation, and construction. Supplemental Services are services that are not included as Basic Services but are identified as the architect’s responsibility at the time the agreement is executed. Additional Services are services that may arise as the project proceeds. This agreement may be used with a variety of compensation methods, including the percentage of the budget for construction cost and stipulated sum.

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Related Documents.

AIA Document B110–2021 is intended to be used in conjunction with AIA Document A110®–2021, Standard Form of Agreement Between Owner and Contractor for a Custom Residential Project, which contains internal general conditions. A110-2021 is referenced in B110.


Dispute Resolution—Mediation and Arbitration.

This document contains provisions for mediation and arbitration of claims and disputes. Mediation is a non-binding process but is mandatory under the terms of this agreement. Arbitration may be mandatory under the terms of this agreement. Arbitration is binding in most states and under the Federal Arbitration Act. In a minority of states, arbitration provisions relating to future disputes are not enforceable but the parties may agree to arbitrate after the dispute arises. Even in those states, under certain circumstances (for example, in a transaction involving interstate commerce), arbitration provisions may be enforceable under the Federal Arbitration Act.

The AIA does not administer dispute resolution processes. To submit disputes to mediation or arbitration or to obtain copies of the applicable mediation or arbitration rules, contact the American Arbitration Association at (800) 778-7879 or visit the website at

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