Off-Grid Living in Sheridan County, Montana

Sheridan County, Montana is about as rural as it gets, and that generally works in favor of anyone wanting to live off-grid, but I want to be upfront about what's actually confirmed versus what I'm inferring from the state baseline.

Zoning: Sheridan County has a joint Growth Policy with the town of Plentywood, but that document is explicitly advisory, not a regulatory zoning code. Montana law (MCA 76-2-202) lets counties adopt zoning by resolution, but I found no evidence Sheridan County has done so countywide. That means, for unincorporated land, there's likely no zoning telling you what you can build or how you can live on your own parcel, though you should confirm this hasn't changed by calling the county Planning Office.

Building permits: This is where Sheridan County differs from a total hands-off approach. The county's Public Works Department runs a "Building in the County" permitting program, with recorded subdivision rules on file (approved 07-05-23). So even without zoning, the county does exercise some building/subdivision oversight. I don't have fee or timeline specifics, and you'd need to call Public Works directly to find out what's required for an owner-built rural home.

Septic: Montana DEQ sets the statewide technical standard for wastewater systems (ARM 17.38), and county health departments issue the individual permits. Sheridan County has a Public Health Department, but I couldn't find an official county-hosted page laying out its own septic application details, so treat local procedure as unconfirmed until you call them.

Greywater and rainwater: No Sheridan County ordinance on either was found. That means the state's default rules apply: Montana generally allows rooftop rainwater collection for personal non-potable use, and greywater reuse is governed by state DEQ rules rather than anything county-specific.

Wells: No county-specific well ordinance turned up. Montana DNRC handles the statewide exempt-well framework, and that would be your default path for a private well here. It's reasonable to expect the county building/septic permitting process will ask about well location relative to septic and property lines, similar to other Montana counties, but I couldn't confirm Sheridan County's exact documentation requirements.

Utility disconnection: I found nothing requiring a grid electric hookup for a single-family home in the county. As with several other categories here, this is the state baseline showing through rather than a confirmed local policy either way.

Bottom line: Sheridan County looks permissive on paper, especially with no confirmed countywide zoning, but the county does actively administer building permits, and several other pieces (septic specifics, well documentation, utility rules) simply haven't been nailed down in the official record I could find. A phone call to the Planning Office and Public Works before you buy or build will save you real headaches.