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Photo Credit: Trekandshoot / Shutterstock The data used in this analysis is from the U.S. Census Bureau’s 2024 Building Permit Survey and 2024 American Community Survey. To determine the locations building the most multi-family housing, researchers at Construction Coverage calculated the share of new privately-owned housing units authorized by building permits in multi-family structures (two or more units) in 2024. In the event of a tie, the location with the greater share of existing housing units in multi-family structures was ranked higher. The proportion of existing housing units in multi-family structures was calculated using American Community Survey data and excludes mobile homes, boats, RVs, and other similar types of housing. To improve relevance, only metropolitan areas with complete data available from both sources were included. Additionally, metros were grouped into cohorts by population: small (less than 350,000), midsize (350,000–999,999), and large (1,000,000 or more). For complete results, see U.S. Cities Building the Most Multi-Family Housing on Construction Coverage.