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AIA Architecture Billings Index (ABI)

About the Work-on-the-Boards Survey and Panel

Work-on-the-Boards is a monthly survey conducted by the AIA's Economics and Market Research group. The survey of firm principals and partners allows participants to track business conditions as they change. Participation enables you to compare your firm to others, track the economy and local business conditions, and use data to target business opportunities.

The panel is open to any AIA member who is principal/partner of their firm. The survey is administered completely online, and you will receive an invitation to participate the first week of each month. Participants also receive a special announcement before the report is available to the general public each month, in the AIArchitect.

If you are a firm principal or partner and would like to join the survey panel or for more information, please e-mail You may also join the panel by completing the background information form.

About the Architecture Billings Index

The Architecture Billings Index (ABI) is a diffusion index derived from the monthly Work-on-the-Boards survey, conducted by the AIA Economics & Market Research Group. The ABI serves as a leading economic indicator that leads nonresidential construction activity by approximately 11 months. The indexes are developed from the monthly Work-on-the-Boards survey, where survey panelists are asked to report whether billings during the previous month significantly increased, remained about the same, or significantly decreased from the prior month. According to the proportion of respondents choosing each option, a score is generated, which represents an index value for each month. If an equal share of firms report an increase as report a decrease, the score for that month will be 50. A score above 50 indicates that firms in aggregate are reporting an increase in activity that month compared to the previous month, while a score below 50 indicates that firms are reporting a decrease in activity.

In March 2014 the AIA released the White Paper “Designing the Construction Future: Reviewing the Performance and Extending the Applications of the AIA’s Architecture Billings Index,” which updates the 2005 White Paper, “Architecture Billings as a Leading Indicator of Construction: Analysis of the Relationship Between a Billings Index and Construction Spending.” This update evaluates how the ABI performed during the most recent construction cycle, introduces the new value of design contracts indicator, and discusses how the construction industry can use this information to make better business planning decisions.

For more information on the ABI, the 2014 ABI White Paper, the design contacts indicator, and more, please see the ABI FAQ.

If you would like to subscribe to the ABI, please contact:

Current issue:

Firm Billings Remain Solid in October

Last 6 months:

Business Conditions Show Signs of Improvement in September

Another Minor Downtick in Firm Billings for August

Architecture Firm Billings Continued to Rise in July

A Strong Jump in Firm Billings in June

Business Conditions at Architecture Firms Bounce Back in May

April Sees an Unexpected Decline in Architecture Firm Billings

Upcoming Press Release Dates for 2015:

January 21, 2015

February 18

March 18

April 22

May 20

June 24

July 22

August 19

September 23

October 21

November 18

December 16


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