An analysis of Montgomery County’s property assessment database over the past century shows homebuilding consistently increased before peaking in the 1980s and has since slowed substantially. The data also show how the composition of the housing stock has changed over time, from overwhelmingly single-family to many more townhouses and apartments.
From before the 1920s through the 1980s, each successive decade saw more homes built than the decade before, except for the 1970s. Then, starting in the 1990s, the trend reversed, with a sharp drop-off in new homes from the 1980s. The decline continued through 2019. Data for 2020 to 2022 suggest that the county may be on pace for another decade of decline.