Land — Northern Rockies / High Plains — MT
Water rights, rainwater law, cottage food rules, right-to-farm protections, livestock zoning, and growing conditions for Montana landowners and buyers.
Land law varies by county, municipality, and HOA. Verify all information with your county planning department, state water agency, and a licensed attorney before any land purchase or development decision.
Water law
Pure prior appropriation. Montana DNRC administers water rights. Water rights can be purchased and transferred separately from land.
Legal. Montana statute (MCA §85-2-102) permits residential collection from rooftop surfaces for use on the property where collected.
Land use and production law
Montana Cottage Food Law: $35,000 gross annual cap; direct consumer and farmers markets; label required. Verify with Montana DPHHS.
Montana Agricultural Protection Act (MCA §27-1-725) protects established agricultural operations.
Most of Montana has very limited municipal zoning. Agricultural and rural areas broadly permissive. Gallatin County (Bozeman) and Yellowstone County (Billings) suburban zones have increasing restrictions.
Growing conditions
Hardiness zones
2a (Glacier NP area) – 6b (low-elevation Bitterroot Valley)
Last frost
May 15 (Billings) – Jun 15 (high valleys/Great Falls)
First frost
Sep 15 (north/mountains) – Oct 1 (Billings/Missoula)
Free soil testing
Montana State University Extension — click to visit
Soil notes
Eastern Montana has shallow Mollisols — productive for dryland grain but limited by precipitation. Western Montana mountain valleys have productive silt loams but short growing seasons. Most Montana soils are alkaline (pH 7.0–8.0).