Bolthole Index county-legal census · checked 2026-08-08
Before a well, before a cabin, the first approval most rural builds need is the septic permit — and no national agency tracks who issues it. We checked every county’s own official sources: 1,608 counties route it through the county health department, 1,096 through a state agency, and 432 through a regional health district. Pick a state for the full county-by-county list, each entry cited.
Even counties with no building codes and no zoning almost always still regulate septic. Pair this with state water rights & well permits for the full water picture.
All 51 states · who runs septic permitting
Building-code freedom gets the attention, but septic approval is the rule that actually decides whether a parcel is buildable: it depends on soil, lot size, and an authority that says yes. County pages on this site show the named septic authority alongside verified building-permit and zoning rules — start from a state below, or run the county screener to filter all 3,143 counties.
General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.
