Norfolk County, MA Shrink-Swell Risk

Shrink-swell potential in Norfolk County, MA

Low

Soil across 99.9% of Norfolk County, MA comes back "Low" in USDA's shrink-swell data, averaging 0.65% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Norfolk County, MA - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Norfolk County will actually do.

Norfolk County: the real numbers

Norfolk 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.

Norfolk County's rank among Massachusetts counties

Among the 3,085 rated counties on this site, Norfolk County, MA ranks 3,029 most-constrained nationally, and 10 of 14 within Massachusetts. Norfolk County, MA is 396 square miles with a population of 740,754.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Harrison County, IN and Ripley 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

Elsewhere in Massachusetts

Every county in Massachusetts is on this site, including Hampden County, MA and Plymouth County, MA. The full underlying dataset is downloadable directly, one row per county.