Commercial Construction Groundbreakings Drop 18 Percent in September

Industry Pulse News Desk · 2026-10-22

Total U.S. construction activity contracted for a second consecutive month following a sharp slowdown in manufacturing and data center projects.

Commercial construction starts declined sharply in September, driven by a steep downturn in manufacturing facility groundbreakings and a deceleration in data center developments. Total commercial groundbreakings fell 18 percent compared to the previous month, marking a continued trend of weakening activity across the building sector.

The September decrease contributed to a second consecutive monthly contraction in overall construction activity nationwide. While nonresidential building had sustained robust growth earlier in the year, declining momentum in large-scale industrial projects significantly pulled down the overall monthly totals.

Data center construction, which had previously served as a primary driver of nonresidential growth amid expanding digital infrastructure demands, experienced a pronounced pause in new project starts. Similarly, manufacturing starts plummeted following several quarters of historic expansion fueled by major factory announcements and supply chain reshoring efforts.

Performance across other commercial subsectors remained muted. Office and retail groundbreakings showed little movement during the period, reflecting ongoing cautious sentiment among commercial real estate developers facing elevated financing costs, high material prices, and tight credit conditions.

Overall nonbuilding projects and institutional sector activity failed to fully offset the sharp reductions recorded in the commercial and manufacturing branches. The consecutive monthly declines highlight persistent broader economic pressure on major infrastructure and capital investment plans heading into the final quarter.