Planning ActivityBroadens Beyond Data Centers
BOSTON, MA–June5,2026—The 51 (DMI), issued by 51 increased5.9%inMayto275.7(2000=100) from thedownwardlyrevisedAprilreading of260.4.Over the month,commercial planningexpanded 6.9%andinstitutional planningmomentumgrew3.1%.
“Nonresidential planning continued to stabilize throughout May,” said Sarah Martin, Director of Economic Research at 51. “Growth in the DMI continued to be led by data center activity, but key sectors – such as healthcare, retail stores and offices – gained momentum as well. Nonetheless, the broader outlook remains cautious, as persistent labor constraints, elevated material costs and ongoing supply chain pressures weigh on owner sentiment in the near term.”
Over the month, planning activity for traditional office buildings, data centers,and retail stores improved, whilewarehouse,hotel and parking garageplanning slowed down.On the institutional side,healthcare planning continued to acceleratein May, alongside government and religious building activity. Meanwhile,educationaland recreationalbuilding momentumslowed down.Year-over-year, the DMI was up33.8% when compared toMay2025. The commercial segment was up41.2% (+6.6% when data centers are removed) and the institutional segment was up17.7% over the same period.
A total of29projects valued at $100 million or moreenteredplanning throughoutMay.The largestcommercial projectsincludedtheEDCAUS11 and EDCAUS12 data centers in Bastrop, Texas, each valued at an estimated $437 million.Additionally, the $432 million Wallace Jackson Industrial Park Data Center (Building 4) in Griffin, Georgia entered the planning queue.The largest institutionalplanningprojects were the$400 million Coast Guard Training Center (TRACEN) modernization project in Cape May, New Jersey, the $400 million Fisk University Innovation Center in Nashville, Tennessee, and the $241 million Harborview Yesler Terrace Medical Office in Seattle, Washington.
The DMI is a monthly measurebased on the three-month movingvalue ofnonresidential building projectsgoing intoplanning, shown to lead construction spending for nonresidential buildings by a full yearto18 months.


