6 counties mapped. On average, 1% of Maine county soil area is high shrink-swell clay (USDA SSURGO).
Foundation problems get more expensive the longer they wait. Get an assessment and repair quotes from independent local pros.
Get repair quotes →| County | Tier | High-risk % | Moderate % |
|---|---|---|---|
| York | Low | 3% | 9% |
| Cumberland County and Part of Oxford | Low | 0% | 17% |
| Franklin County Area and Part of Somerset | Low | 0% | 0% |
| Kennebec | Low | 0% | 18% |
| Penobscot | Low | 0% | 6% |
| Waldo | Low | 0% | 1% |
Risk metrics are computed from USDA SSURGO soil survey data (linear extensibility of soil components, area-weighted by county). Soil varies lot to lot — this is county-scale context, not a substitute for a site-specific geotechnical or structural assessment.