Foundation Types in 2024: Slabs Continue to Rise, Crawl Spaces Decline

In 2024, 73% of new single-family homes started were built on slab foundations, according to NAHB analysis of the U.S. Census Bureau’s Survey of Construction (SOC). Although this was a modest year-over-year increase of 0.6 percentage points, it continues the upward trend in slab adoption, widening the gap between slabs and other foundation types. In…

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Use of Private Water and Sewer Systems in New Single-Family Homes

The share of new single-family homes built with individual septic systems declined slightly in 2024 compared to the previous year, while the share of homes served by private wells remained steady. According to NAHB’s analysis of the Census Bureau’s Survey of Construction (SOC), approximately 16% relied on individual septic systems, and 9% of new single-family…

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