Off-Grid Living in Liberty County, Montana

Liberty County is one of Montana's smallest, least populated counties, and that shows up clearly in how little of its own land-use paperwork is published online. I went looking for a Liberty County planning, zoning, building, or environmental health page and came up empty across multiple searches. What I can give you is the Montana state framework, which fills in a lot of gaps, plus an honest flag on what the county itself hasn't made public.

Zoning. Montana counties don't get zoning automatically, a county has to affirmatively create a zoning district through a petition process handled by a county planning and zoning commission, per state law. I found no record of Liberty County having done this. That doesn't mean there's zero regulation, it means I couldn't confirm one way or the other from an official county source, so treat this as unresolved until the courthouse tells you otherwise.

Dwellings, tiny homes, RVs. No county-specific rule turned up. Statewide, Montana uses IRC Appendix Q for foundation-built tiny homes, and wheeled tiny homes generally get treated like RVs. Liberty County likely just defaults to whatever the state allows, but that's an inference, not a confirmed local rule.

Building permits. Here's an important Montana quirk: the state exempts single-family homes from state building-code permitting unless the county has opted into the program. I could not confirm whether Liberty County has opted in. This is worth a direct phone call, because it changes whether you need a permit at all.

Septic. This one I feel decent about at the state level. Montana DEQ sets the minimum standards for wastewater systems statewide (see DEQ Circular 4 / ARM 17.36), and counties typically administer permitting against that framework, often via a site evaluation. Liberty County almost certainly follows this pattern, but I found no county-specific document, form, or fee schedule.

Greywater. State rule applies: in-home reuse like toilet flushing is generally allowed without a permit if it goes through a compliant system, subsurface irrigation has more restrictions under state rule. No Liberty County variation found.

Rainwater harvesting. No state or county prohibition found on basic rooftop collection for personal, non-potable use.

Wells. Montana DNRC administers exempt-well provisions statewide, allowing small wells without a pre-drilling permit but requiring a notice of completion filed with the state. No Liberty County twist found.

Utilities. I found no statute, state or county, requiring grid connection for a private home. Whether local subdivision rules impose anything extra is unconfirmed.

Bottom line: Liberty County is thin on public documentation, so your fastest path to real answers is a phone call to the courthouse.