Private data center construction spending is up over 73%, from $49.05 billion to $84.95 billion, year over year (YoY), according to the Census Bureau’s detailed construction spending tables for August. Spending is at a record annual pace, and growth is the fastest since April 2025’s +88.2%. Data center buildouts are now about 63% of all private office construction. The report, released last week, uses Census definitions that exclude any value of “racks or servers in data centers” from its construction spending numbers. It also does not speculate on any cause of the spending increase.

The Census data covers the Value of Construction Put in Place, measured monthly, to calculate what a full year would total at that month’s pace. Data center construction is defined as “[including] buildings that contain the hardware needed for storing, processing, and transmitting digital information,” a subcategory of private office. Power plants and transmission lines built to meet data center power demand fall under Census’s separate power category.

The $39.1 billion gap between general office and data center construction spending is the widest in the series since Census data begins in January 2014. The former is at $45.8 billion, down 9.7% YoY and 34.8% since Jan. 2023. Data centers have, in fact, beaten the general office every month since Sept. 2025.

Data center construction now sits at over nine times its Jan. 26 billion. Data center construction has become the majority of private office construction, about 63% versus 47% a year earlier, and with forecasts for data center power use still climbing , that is likely to remain the case moving forward.

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