FAQs: B109™–2020, Standard Form of Agreement Between Owner and Architect for a Multi-Family Residential or Mixed Use Residential Project


Does the AIA publish any agreements for multi-family residential or mixed-use residential construction projects? 

Yes, AIA Document B109–2020, is a standard form of agreement between owner and architect for building design and construction contract administration for a multi-family residential or mixed-use residential project. B109–2020 contains terms and conditions that are unique to these types of projects. 

B109–2020 is based on AIA Document B103™–2017, Standard Form of Agreement Between Owner and Architect for a Complex Project. AIA Document B109–2020 uses the traditional division of services into basic and additional services but adds a new supplemental services category. It also includes a pre-design services article that includes items such as assessment of project feasibility, layout, and regulatory requirements.

B109–2020 is not intended for use on residential projects that will include a residential condominium unless specifically set forth in the initial information. If B109–2020 is used for residential condominium projects, users should review and consider modifying. AIA’s Guide for Supplementary Conditions to AIA Document B109 –2020 (B509™–2020), includes a discussion of potential risks that may be inherent in residential condominium construction and offers model language for inclusion in B109–2020 to better allocate these risks.


What are the pre-design services in B109–2020?

The pre-design services in AIA Document B109–2020, begins before the traditional Basic Services and includes an assessment of project feasibility, layout, and regulatory requirements. Following pre-design services, basic services are based on five traditional phases: schematic design, design development, construction documents, bidding or negotiation, and construction. B109–2020 contains separate compensation provisions for pre-design services, basic services, additional services, and supplemental services.


Who provides cost estimating services in B109–2020?

In B109–2020, the architect does not prepare cost estimates but agrees to design the project to meet the owner’s budget for the cost of the work at the conclusion of the design development phase services. B109–2020 assumes that the owner will retain third parties to provide cost estimates and project schedules, and may implement fast-track, phased, or accelerated scheduling.


What general conditions document is used with B109–2020?

B109–2020 is intended to be used in conjunction with AIA Document A201®–2017, General Conditions of the Contract for Construction, which it incorporates by reference.

For more information see the document’s summary  »

Read instructions  »



Was this article helpful?
3 out of 3 found this helpful

Articles in this section

See more
For document related questions:
For technical support:
Our helpline hours:
8:30am - 6:00pm EST Monday to Friday