Falls Church city, VA Shrink-Swell Risk

What Falls Church city, VA's soil means for a foundation

Low

USDA's SSURGO data puts Falls Church city, VA's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.9% across 96.8% of the county's surveyed land. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

This is a county figure, not a lot figure

USDA's survey covers the whole of Falls Church city, VA at once, not any single address. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Report cost vs. repair cost

With Falls Church city, VA rating "Low", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.

Falls Church city's rank among Virginia counties

Nationally, Falls Church city, VA is the 2,074-most-constrained of 3,085 rated counties for shrink-swell soil. Within Virginia alone it ranks 85 of 114. The county spans 2 square miles, home to 15,034 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Benzie County, MI and Cleveland County, OK are worth a look for comparison.

How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil

More of Virginia

Every county in Virginia is on this site, including Culpeper County, VA and Accomack County, VA. The full underlying dataset is downloadable directly, one row per county.