Botetourt County, VA Shrink-Swell Risk
Shrink-swell potential in Botetourt County, VA
Low
Soil across 62.1% of Botetourt County, VA comes back "Low" in USDA's shrink-swell data, averaging 2.81% 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 this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Botetourt County, VA - never a reading for one specific parcel. 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 Botetourt County.
Botetourt County: the real numbers
Botetourt County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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.
How Botetourt County, VA compares
Among the 3,085 rated counties on this site, Botetourt County, VA ranks 1,337 most-constrained nationally, and 22 of 114 within Virginia. Botetourt County covers 541 square miles and counts 34,129 residents.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. McDowell County, NC and Pueblo County, CO 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
Elsewhere in Virginia
Every county in Virginia is on this site, including Lexington city, VA and Clarke County, VA. The full underlying dataset is downloadable directly, one row per county.