Hamilton Zoning & Land Use Guide
Last updated: Verified:
Key Zoning Facts
Regulatory Layers That Apply in Hamilton
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
State — Montana
- Building Code: Montana Building Code (based on 2021 IBC)
- State ADU Override: Yes (SB 528 and HB 211)
County — Ravalli County
- Role: Property records, tax assessment, unincorporated area planning
City / Municipal
The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.
Overlay Districts
No overlay districts identified.
Private Restrictions
- HOA / CC&Rs common: Yes
- Check HOA CC&Rs for additional restrictions.
Primary Zoning Districts
| District Code | Name | Min Lot | Max Height | Front Setback | Side Setback | Rear Setback | FAR |
|---|---|---|---|---|---|---|---|
| R-1 | Single-Family Residential | 7,000 sq ft | 30 ft | 20 ft | 6 ft | 20 ft | — |
| R-3 | Multi-Family Residential | 5,000 sq ft | 40 ft | 15 ft | 8 ft | 20 ft | — |
| C-1 | Central Business | None | 40 ft | 0 ft | 0 ft | 5 ft | — |
ADU Rules in Hamilton
ADUs:Allowed
- Max Size
- 800 sq ft
- Max Height
- 22 ft
- Rear Setback
- 5 ft
- Side Setback
- 5 ft
- Parking
- None required (per state law SB 245)
- Owner Occupancy
- Not required (per state law)
- Permit Timeline
- 2-4 weeks
Official Sources
Frequently Asked Questions
Frequently Asked Questions
Can I build an ADU in Hamilton?
Yes. Montana state law requires cities to allow ADUs without owner-occupancy or parking mandates.
How do I find the zoning for my property in Hamilton?
Contact the City of Hamilton Planning Department at (406) 363-2101.
What zones allow multi-family housing in Hamilton?
Multi-family housing is permitted in R-3 (Multi-Family Residential) and commercial zones.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Zoning codes and building regulations change frequently. Always verify current requirements with your local planning department and building authority before making any decisions.