Off-Grid Living in Garfield County, Montana

Garfield County, Montana is about as rural as it gets, roughly 1,150 people spread across a huge stretch of eastern Montana, with Jordan as the only incorporated town and county seat. That kind of population density usually means light-touch local regulation, but I want to be upfront: my research could not pull up Garfield County's actual zoning resolution, building code adoption, or septic ordinance text. County government sites for small Montana counties often aren't well indexed, so a lot of what follows leans on the Montana state baseline rather than county-specific rules. Always confirm directly with the county before you build or drill anything.

Zoning: Montana counties only get zoning if they've opted in under Title 76, Chapter 2 of the Montana Code Annotated. I couldn't confirm whether Garfield County's unincorporated area has adopted a countywide zoning resolution. If it hasn't, raw land outside Jordan is likely unzoned, which is common in low-population Montana counties. Jordan itself might have its own municipal zoning, but I didn't find that confirmed either. Call the county to check your specific parcel.

Dwellings, tiny homes, RVs, and building permits: Montana has a state building code administered by the Department of Labor & Industry's Building Codes Program. Counties can adopt and enforce their own local code, or they default to the state program. I found nothing confirming Garfield County runs its own building department, so it's plausible (not certain) that the state program applies by default here.

Septic and composting toilets: This is state-permitted territory. Montana DEQ sets the septic standards (see its homeowner guide to septic systems), and county sanitarian offices, delegated by DEQ, typically issue local permits and inspections. I could not locate Garfield County's own OWTS rules or fee schedule, so plan to contact the county's health/environmental office directly.

Greywater: No county-specific rule turned up, so the Montana DEQ state baseline governs, indoor greywater reuse is generally allowed without a permit if it goes through a compliant disposal system, with restrictions on subsurface irrigation.

Rainwater harvesting: No Garfield County restriction was found. Basic rooftop collection for personal, non-potable use appears fine under the state baseline; larger appropriations fall under DNRC's water-rights framework.

Wells: Well drilling and pump installation fall under the Montana Board of Water Well Contractors' licensing rules, and larger groundwater appropriations intersect with DNRC water rights. No Garfield County-specific well ordinance was found beyond that. USGS has published groundwater/well-yield data for northeastern Garfield County that's useful for siting, though it's not a regulatory requirement.

Off-grid / utility disconnection: Genuinely unclear. I found nothing at the state or county level explicitly permitting or banning a fully utility-disconnected home. It likely comes down to whether the county's building, zoning, or health rules require an approved water and septic system before occupancy, but no confirmed Garfield County occupancy requirement exists in what I found.

Bottom line: this is a county where the paper trail is thin, and that cuts both ways, it might mean fewer hoops, but it also means you need to call the county directly before assuming anything.