Adobe Stock Chad McDermott

The median lot size of a new single-family detached spec home sold in the United States was 8,560 square feet in 2017, or just under one-fifth of an acre, down from 8,562 square feet in 2016. The median lot size fell below 8,600 for the first time in the history of the Survey of Construction in 2015, and has remained at record lows ever since.

New home lots are shrinking on average, but vast differences remain in median lot sizes by region. In New England, where strict local zoning regulations require very low density construction, the regional median lot size is twice the national median at 0.4 acres.

The East South Central and Middle Atlantic regions also come in above average for median lot sizes at 0.3 acres. Conversely, in the Pacific division, almost half of new lots were under 0.15 acres.

Read More