Landmines — flags that cap this score
⚑ Soil rated "Very limited" for septic · caps this score at 60
USDA rates this soil "Very limited" for septic absorption fields. If the lot has no sewer service, a standard septic system likely fails here — an engineered system can cost tens of thousands more, and a failed perc test can kill the build. Order the perc test before closing. (USDA SSURGO (engstafdcd))
⚑ Seasonal water table within ~46 cm
A high seasonal water table works against basements, slab moisture, and septic fields, and can require dewatering during construction. Verify with a soil bore in the wet season. (USDA SSURGO (wtdepannmin))
Score factors & provenance
| Zoning | — | no data |
| Flood | 63 | FEMA NFHL |
| Seismic | 90 | USGS Seismic |
| Soil | 50 | USDA SSURGO |
| Radon | 60 | EPA Radon |
| Wildfire | 85 | USFS WHP |
| Utilities | — | no data |
| Terrain | 95 | USGS 3DEP |
| Lot shape | 88 | Buildability engine |
Computed live from public federal sources by the Buildability Score engine (current methodology: v2) — deterministic and reproducible, not asserted. Generated September 12, 2026. Data sources · Accuracy
Informational only — not a permit, appraisal, or professional engineering opinion. Verify with your local planning department before acting on it. See Terms and data sources.
Questions about this score
What is the Buildability Score™ for 111 STATE HWY 171, GAYS MILLS, WI, 54631?
111 STATE HWY 171, GAYS MILLS, WI, 54631 carries a Buildability Score of 60 out of 100 (grade C+). The score is composed from 7 weighted factors — each cited to its federal or jurisdictional source and re-runnable live on this page.
What does a grade C+ mean?
Grade C+ reads as a scored buildability read across zoning, flood, seismic, soil, radon, wildfire, and utility factors. The grade is derived from the numeric score (60/100) on the published Buildability™ scale.
Which factor most affects 111 STATE HWY 171, GAYS MILLS, WI, 54631?
The weakest factor at this address is soil (scored 50). That's the factor most likely to constrain what a design can carry, and the one to inspect first before committing capital.
What's this parcel's strongest attribute?
Terrain scores 95 out of 100 — the highest of the 7 factors read for this address.
Where does the data come from?
Every factor cites the federal or jurisdictional dataset it came from — FEMA (flood), USGS (seismic), USFS (wildfire), EPA (radon), USDA/NRCS (soil), and the local jurisdiction's own zoning record where available. Sources are queried live and re-run on refresh; the score cannot outrun its data.
Does the Buildability Score account for local zoning in Gays Mills village, WI?
When Gays Mills village, WI's zoning record is on our roster, the score reads the jurisdiction's own dimensional standards for the district this parcel sits in. When it isn't, the zoning factor drops out rather than being estimated — which is why parcels in un-rostered jurisdictions still return a score, just one that doesn't count zoning.
Is this an official determination?
No. The Buildability Score™ is a preliminary due-diligence read, not an entitlement or permit approval. Governing bodies retain sole authority over binding land-use decisions. The score's role is to make the diligence conversation faster and better-grounded, not to replace it.