Housing analyst Ivy Zelman has warned that a slowdown in household formation could create an overbuilding problem for the U.S. housing market. Her outlook points to roughly 1 million new households a year in the latter part of the decade, compared with about 1.8 million annually earlier in the period.

The shift matters because housing starts are running at approximately 1.4 million units. If construction remains near that level while household growth weakens, new supply could outpace the pool of potential occupants and buyers.

For developers and investors, the warning underscores the importance of local market selection rather than relying on national housing shortages as a blanket rationale for new projects. Demand conditions may vary materially by region, property type and buyer segment even as national household growth slows.

Zelman’s assessment, reported by HousingWire, places demographic demand at the center of the industry’s supply outlook. A sustained gap between starts and household formation would increase the risk of weaker absorption in markets where development pipelines remain elevated.