Montana
Buying Land in Ravalli County, Montana
The Bitterroot Valley is one of Montana's fastest-growing places -- close enough to Missoula to draw commuters, scenic enough to draw everyone else -- but it's also a county that voted, in 2008, to repeal its own growth policy rather than adopt countywide zoning. What exists instead is a patchwork of roughly four dozen citizen-petitioned zoning districts, a documented wildfire-exposure problem tied directly to that growth, and real strain on the small domestic wells much of the valley depends on.
A 20-year zoning fight that never quite finished
In 2006, Ravalli County voters passed a measure authorizing the county planning department to develop countywide zoning -- a response to explosive growth that took the county from roughly 25,000 residents in 1990 to about 40,000 by 2010. The county spent the following years drafting regulations with the planning firm Clarion Associates. In 2008, though, opponents of the zoning effort put a different measure on the ballot: an outright repeal of the county's growth policy, the state-law prerequisite for county zoning. It passed, and by outside accounts Ravalli became the only county in Montana to have repealed its own growth policy. The countywide zoning effort never recovered.
What exists instead is a patchwork of citizen-initiated (Type 1) zoning districts -- roughly four dozen of them as of recent reporting -- each created when a defined group of landowners petitions for it under Montana's citizen-initiated zoning statute (the same mechanism the state hub describes as producing patchwork zoning across Montana generally, and the same mechanism at the center of the wind-turbine zoning fights in eastern Montana's Prairie and McCone counties). Ravalli County's Planning & Zoning Commission administers these petitions and the resulting district regulations. A parcel's zoning status here genuinely depends on whether it happens to fall inside one of these specific districts -- there is no countywide backstop -- so check the current district map with the Planning Department rather than assuming either way.
The nation's most wildfire-exposed new construction, and what's driving it
Ravalli County isn't just growing -- it's growing directly into wildfire hazard in a way that's been specifically documented. A 2020 Headwaters Economics analysis found that between 1990 and 2016, Ravalli County built more new single-family homes in high wildfire-hazard zones than any other county in its nationwide study, roughly 7,000, with new construction in those zones up 97% over the period. Ravalli and neighboring Missoula County together accounted for 82% of the high-hazard-zone housing growth the study measured. A Bitterroot National Forest district ranger has described the valley's proximity to wildland fire as something that 'drives everything' about firefighting response in the area.
The county's history here runs deep: the 2000 fire season burned roughly 307,000 acres of the Bitterroot National Forest plus another 49,000 acres of private and state land within the county, destroying 70 homes, two commercial buildings, and 167 outbuildings. That season led directly to the county's first Community Wildfire Protection Plan, most recently updated in January 2024, and to the county's growth policy referencing defensible-space principles. If you're evaluating forested or brush-covered acreage in Ravalli County, treat wildfire exposure -- and its effect on insurability -- as a primary due-diligence item, not an afterthought.
Growth is showing up in the water supply, too
Population growth doesn't just strain the land-use and fire picture -- it's straining water. Montana DNRC data identified the Bitterroot Valley as one of four Montana aquifers (alongside the Helena, Missoula, and Gallatin valleys) where new small-volume 'exempt' domestic wells are measurably affecting existing, senior water-right holders. Senate Bill 358, introduced in the 2025 Montana Legislature, would have imposed real restrictions on new exempt wells in exactly these four basins; the bill was killed, so the current, more permissive exempt-well framework described on the state hub still applies here for now.
But the fact that the Bitterroot was named in that bill at all is a signal worth taking seriously. If your intended water source for a Ravalli County parcel is a new exempt well rather than an existing permitted right, ask DNRC directly about current aquifer conditions in the specific sub-basin, rather than assuming the exemption will remain available on the same terms indefinitely.
Who to Call Before Buying Land in Ravalli County
Property tax billing and payment (as opposed to valuation) runs through the Ravalli County Treasurer's office, (406) 375-6585 -- a separate function from the Department of Revenue field office listed above, which handles appraisal and classification. The number of active citizen-initiated zoning districts changes as new petitions are approved; the roughly four-dozen figure cited on this page reflects recent secondary reporting rather than a live count, so get the current district map from the Planning Department directly.
Planning & Zoning
Ravalli County Planning Department
Land-use planning, citizen-initiated zoning district petitions and maps, subdivision review, and confirming whether a specific parcel is inside a zoning district.
Floodplain / Stormwater
Ravalli County Planning Department -- Floodplain Administrator
Floodplain determinations and permits for a specific parcel.
Septic / Onsite Wastewater
Ravalli County Environmental Health
Septic system permits, site evaluations, and general environmental-health questions.
GIS / Parcel Records
Ravalli County GIS
Parcel maps, ownership data, and the county's ArcGIS Online mapping portal.
Assessor / Property Tax
Montana Department of Revenue -- Ravalli County Field Office
Property appraisal, classification, and assessed-value questions (Montana property valuation is a state Department of Revenue function, not a county assessor).
Recorder / Clerk / Land Records
Ravalli County Clerk and Recorder
Recorded deeds, mortgages, certificates of survey, and plat history.
Agricultural Extension
Ravalli County MSU Extension
Agricultural and land-management questions specific to Ravalli County.
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Sources
- Will a twice-burned county change its ways? — High Country News (accessed 2026-09)
- Building in fire zones: Fast-growing Ravalli County outpaces most of U.S. for wildfire risk — Ravalli Republic (accessed 2026-09)
- Montana County Outpacing Most of U.S. for Wildfire Risk — Government Technology (Headwaters Economics data) (accessed 2026-09)
- Ravalli County Community Wildfire Protection Plan (January 2024) — Montana DNRC / Ravalli County (accessed 2026-09)
- Senate Bill could impose limitations on exempt wells in Ravalli County — Ravalli Republic (accessed 2026-09)
- Diverse coalition challenges Montana's exempt wells — Missoula Current (accessed 2026-09)
- Bitterroot Valley Urbanization: Growth and the Rural Myth — Bitterroot Valley (regional planning resource) (accessed 2026-09)
- Ravalli County, MT population data — Data USA (U.S. Census Bureau data) (accessed 2026-09)
- Planning — Ravalli County, Montana Government (accessed 2026-09)
- Environmental Health — Ravalli County, Montana Government (accessed 2026-09)
Last reviewed 2026-09