Williamsburg city, VA Shrink-Swell Risk
Williamsburg city, VA's soil, for shrink-swell risk
Low
Williamsburg city, VA: USDA's soil survey rates 57.9% of the county "Low" for shrink-swell potential (2.86% linear extensibility). That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.
What Williamsburg city's reading doesn't cover
Two lots a mile apart in Williamsburg city 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 Williamsburg 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.
Where this sits nationally
Nationally, Williamsburg city, VA is the 1,303-most-constrained of 3,085 rated counties for shrink-swell soil. Within Virginia alone it ranks 19 of 114. The county spans 9 square miles, home to 16,030 people.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Chelan County, WA and Dubuque County, IA 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 Manassas Park city, VA and Roanoke city, VA. The full underlying dataset is downloadable directly, one row per county.