Architecture Billings Index Backslides Slightly
Midwest and South regions continue to see best business conditions
The Architecture Billings Index (ABI) slipped in August after showing mostly healthy business conditions so far this year. As a leading economic indicator of construction activity, the ABI reflects the approximate nine to twelve month lead time between architecture billings and construction spending. The American Institute of Architects (AIA) reported the August ABI score was 49.1, down from a mark of 54.7 in July. This score reflects a slight decrease in design services (any score above 50 indicates an increase in billings). The new projects inquiry index was 61.8, down from a reading of 63.7 the previous month.
“Over the past several years, a period of sustained growth in billings has been followed by a temporary step backwards,” said AIA Chief Economist Kermit Baker, Hon. AIA, PhD. “The fact that project inquiries and new design contracts continue to grow at a healthy pace suggests that this should not be a cause for concern throughout the design and construction industry.”
Key August ABI highlights:
- Regional averages: Midwest (56.1), South (53.8), West (50.2) Northeast (46.8)
- Sector index breakdown: institutional (53.7), mixed practice (52.8), commercial / industrial (49.7) multi-family residential (49.5)
- Project inquiries index: 61.8
- Design contracts index: 55.3
The regional and sector categories are calculated as a 3-month moving average, whereas the national index, design contracts and inquiries are monthly numbers.
About the AIA Architecture Billings Index
The Architecture Billings Index (ABI), produced by the AIA Economics & Market Research Group, is a leading economic indicator that provides an approximately nine to twelve month glimpse into the future of nonresidential construction spending activity. The diffusion indexes contained in the full report are derived from a monthly “Work-on-the-Boards” survey that is sent to a panel of AIA member-owned firms. Participants are asked whether their billings increased, decreased, or stayed the same in the month that just ended as compared to the prior month, and the results are then compiled into the ABI. These monthly results are also seasonally adjusted to allow for comparison to prior months. The monthly ABI index scores are centered around 50, with scores above 50 indicating an aggregate increase in billings, and scores below 50 indicating a decline. The regional and sector data are formulated using a three-month moving average. More information on the ABI and the analysis of its relationship to construction activity can be found in the recently released White Paper, Designing the Construction Future: Reviewing the Performance and Extending the Applications of the AIA’s Architecture Billings Index on the AIA web site.