Off-Grid Living in Wheatland County, Montana

I'll be upfront: Wheatland County, Montana is small and rural (Harlowton is the county seat), and its official website just doesn't have a lot of the detailed ordinance text I usually dig up for a guide like this. So a good chunk of what follows is "here's the Montana state baseline, and here's who to call to see if the county has layered anything on top of it."

Zoning. Montana counties can only zone unincorporated land after adopting a growth policy, per state law (Mont. Code Ann. § 76-2-201), or through a citizen-petition process for targeted districts (§ 76-2-101, which requires signatures from a majority of affected owners). Wheatland County does have an active County Planning Board that meets quarterly, so there's clearly some planning function in place, but I could not find a published countywide zoning ordinance on the county's site. Whether raw-land occupancy is restricted here is genuinely unclear, call the Planning Board.

Dwellings, tiny homes, RVs. No county-specific rule found. Statewide, foundation-built tiny homes generally fall under IRC Appendix Q, and wheeled tiny homes are typically treated as RVs, subject to whatever state or local RV occupancy rules apply.

Building permits. This is a big one: Montana exempts single-family homes from state building-code permitting unless the county has specifically opted into that jurisdiction. I found no building department listed on Wheatland County's own departments page, which suggests the county may not have opted in, but that's not confirmed. Ask directly before assuming you're exempt.

Septic. In Montana, the state DEQ sets design and siting standards, but county sanitarians or environmental health boards issue actual permits. I could not find a Wheatland County septic/environmental health page, so I don't know who locally administers this, likely a county health contact reached through the general county line.

Greywater. No county rule found. State rule generally allows limited indoor greywater reuse without a permit, while greywater disposal to the ground is more tightly controlled, similar to septic.

Rainwater harvesting. No county rule found, and nothing at the state level prohibits basic rooftop, non-potable catchment. Larger appropriations would run through Montana DNRC's water rights framework.

Wells. Montana DNRC runs a statewide "exempt well" program for small-volume domestic wells, no pre-drilling permit needed, just a notice of completion after the fact. No Wheatland-specific well ordinance was found, so this would run through the state DNRC regional office.

Utility disconnection. No state or county requirement to hook up to the grid was found for a private single-family home. Just confirm there's no hidden requirement tied to subdivision or septic approval, if such requirements even exist here, which isn't confirmed either.

Bottom line: Wheatland County is thin on public documentation, so a phone call before you buy or build is not optional here, it's essential.