Associated Builders and Contractors (ABC)’s Construction Backlog Indicator rose to 9.1 months in May, according to an ABC member survey conducted May 20 to June 3. That reading is up 0.3 months from April and 0.7 months from May 2025.
Backlog for the month increased in every region except for the South. Despite the monthly movement, the South remains the region with the longest backlog and the largest year-over-year increase in backlog.
ABC’s Construction Confidence Index readings for sales, profit margins, and staffing levels fell in May. Still, the readings for all three components remained above the threshold of 50, indicating expectations for growth over the next six months.
“Backlog rose to a nearly three-year high in May,” said ABC Chief Economist Anirban Basu. “This increase largely reflects the massive data center investments taking place across the nation, as the 14% of ABC members under contract to work on data centers continue to have much higher backlog (11.6 months) than those that are not (8.6 months).
“The way this boom is disproportionately benefiting larger contractors helps to explain why contractor confidence slipped in May even as backlog continued to climb.”
You can view ABC’s Construction Backlog Indicator and Construction Confidence Index for May, as well as the full Construction Backlog Indicator and Construction Confidence Index data series.
About Associated Builders and Contractors
Associated Builders and Contractors (ABC) is a national construction industry trade association established in 1950 with 67 chapters and 24,000 members. Founded on the merit shop philosophy, ABC helps members offer a robust employee value proposition, develop people, win work, and deliver that work safely, ethically and profitably for the betterment of the communities in which ABC and its members work.
’s Construction Backlog Indicator rose to 9.1 months in May—up 0.3 months from April and 0.7 months from May 2025—but with most activity relegated to data centers, contractor confidence fell.){kind=link}