Warren County, VA Shrink-Swell Risk

Warren County, VA's soil, for shrink-swell risk

Low

Warren County, VA: USDA's soil survey rates 73.1% of the county "Low" for shrink-swell potential (2.2% linear extensibility). That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What Warren County's reading doesn't cover

Two lots a mile apart in Warren County can carry different soil, even though they share one countywide reading. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Warren County.

What it costs to find out, versus to ignore it

With Warren County, 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.

Warren County's rank among Virginia counties

Nationally, Warren County, VA is the 1,801-most-constrained of 3,085 rated counties for shrink-swell soil. Within Virginia alone it ranks 62 of 114. Warren County, VA is 215 square miles with a population of 42,461.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Sevier County, AR and Iberville Parish, LA 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 Petersburg city, VA and Sussex County, VA. The full underlying dataset is downloadable directly, one row per county.