Prince George County, VA Shrink-Swell Risk
Prince George County, VA's soil, for shrink-swell risk
Low
Prince George County, VA: USDA's soil survey rates 76.6% of the county "Low" for shrink-swell potential (2.35% 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 Prince George County's reading doesn't cover
Two lots a mile apart in Prince George County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
What it costs to find out, versus to ignore it
With Prince George 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.
Where this sits nationally
Nationally, Prince George County, VA is the 1,686-most-constrained of 3,085 rated counties for shrink-swell soil. Within Virginia alone it ranks 50 of 114. The county spans 265 square miles, home to 43,589 people.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Fairfax County, VA and Gasconade County, MO 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.