The American Institute of Architects (AIA) reported in its monthly Architecture Billings Index (ABI) that industry growth has slightly slowed this summer following strong numbers in the spring.

June’s ABI score was 53.2, which is down from May’s score of 53.5. Though the score slipped some, the numbers indicate overall strong business conditions. New project inquiries and design contracts indexed continued to show growth, posting scores of 58.2 and 52.2, respectively. Any score above 50 indicated an increase in billings from the prior month.

“Ongoing project activity at architecture firms as well as new work coming online remains strong, pushing project backlogs up to seven months on average nationally,” said AIA chief economist, Kermit Baker, Hon. AIA, PhD. “In spite of heavy workloads, employment at architecture firms has stabilized, suggesting that adding new employees is becoming even more challenging as the building construction sector continues to recover.”

Regionally, billings in the Northeast (48.7) decreased following two months of steady growth. In the South (51.5), business conditions also slowed, with the most robust growth coming from firms in the West (57.8) and Midwest (54.8).

Firms with an institutional specialization reported the strongest growth for the first time since before the pandemic. Additionally, the majority of multifamily residential (52.6), commercial (52.5) and industrial (53.5) sectors saw an increase in billings, though the pace of growth continues to slow for both.