Land — Pacific Northwest / Mountain — ID
Water rights, rainwater law, cottage food rules, right-to-farm protections, livestock zoning, and growing conditions for Idaho 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. Idaho's water law among oldest and most established in the West. Department of Water Resources (idwr.idaho.gov). Domestic wells up to 13,000 gallons/day exempt.
Legal. Idaho statute (Idaho Code §42-3802) authorizes collection up to 2,500 gallons using up to 5 containers. Agricultural use requires a water right.
Land use and production law
Permits low-risk foods; no gross sales cap; direct consumer sales and farmers markets; label required. Verify with Idaho State Department of Agriculture.
Idaho Agricultural Protection Act (Idaho Code §22-4501) protects established agricultural operations.
Rural and agricultural zones generally unrestricted. Ada County (Boise metro) has significant suburban restrictions.
Growing conditions
Hardiness zones
3a (high mountains) – 7a (Snake River Canyon/Lewiston)
Last frost
May 1 (Boise) – Jun 15 (mountain valleys)
First frost
Sep 15 (north/mountains) – Oct 15 (Snake River plain)
Free soil testing
University of Idaho Extension — click to visit
Soil notes
Snake River Plain has highly productive volcanic soils (Andisols) with good water retention. Mountain valley soils vary. Northern Idaho has Mollisols similar to the Palouse wheat region.