Construction spending increased 0.6 percent from February to March, according to an Associated General Contractors of America (AGC) analysis of government dats.
AGC says gains in residential construction and continued strength in select private nonresidential segments offset ongoing weakness in manufacturing activity and a slight decline in public construction. Association officials note that ongoing economic uncertainty and rising costs continue to weigh on many private construction segments.
“The February and March spending data show that construction growth remains concentrated in a narrow set of categories,” says Macrina Wilkins, director of market insights for AGC. “Residential construction rebounded in March and investment tied to data centers and power projects continues to support activity, but several traditional nonresidential segments, including manufacturing and commercial construction, continue to lag.”
Construction spending totaled $2.18 trillion at a seasonally adjusted annual rate in March, up 0.6 percent in the month and 1.6 percent year over year, according to AGC. Private construction spending increased 0.8 percent for the month and 1 percent year-over-year. Private residential construction climbed 3.6 percent compared to a year earlier, including a 2.7 percent monthly increase in single-family construction, although single-family spending remains 4.2 percent below year-ago levels. Multifamily construction edged up 0.5 percent year-over-year.
Private nonresidential construction slipped 0.2 percent for the month and 2.1 percent compared to March 2025. Manufacturing construction continued to weaken sharply, falling 17 percent year over year. By contrast, office construction, which includes data center activity, increased 9.1 percent over the past 12 months, while power construction rose 4.6 percent. Several other segments posted modest gains, including amusement and recreation, educational, and commercial construction.
Public construction spending decreased 0.2 percent for the month but remained 3.6 percent above year-ago levels. Highway and street construction increased 3.8 percent compared to March 2025, while transportation construction rose 2.5 percent and sewage and waste disposal construction jumped 9.7 percent year-over-year. Education construction spending inched up by 0.6 percent over the past year.
AGC officials note that much of the recent construction activity continues to be concentrated in a handful of segments, particularly data centers, power and select residential categories, while manufacturing and several traditional private nonresidential segments remain soft. They add that although the March data reflect construction activity earlier this spring, contractors and project owners are continuing to navigate uncertainty tied to tariffs, elevated financing costs, labor shortages and recent volatility in energy markets.
“Demand for data centers and related projects is providing a much-needed boost to overall construction activity,” says Jeffrey Shoaf, AGC’s CEO. “Unfortunately, a growing number of local officials appear intent on undercutting that growth, and the high-paying construction jobs that come with it, by restricting data center projects.”