

ADUs are allowed in Four CornersTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Four Corners, MT
Is your property eligible for an ADU?
# of Properties
24
Zoning districts
7
Zoning Districts:
2,959 parcels · 7 districts
RR/A
66%(1,964)
C
16%(476)
MU
16%(473)
LDRR/A
1%(39)
Other
0%(7)
ADU Rules
What can you build in Four Corners, MT?
Four Corners, MT follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Max Units
- –RR/A, LDRR/A, NC: 2 ADUs per lot; MU, C: none specified; PLI: 0 per lot
Rental Restrictions
- –Short-term rentals (<28 days) allowed only where permitted/conditional; must comply with §9.2.9; owner must be the primary resident and on-site during guest stays.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Montana municipalities
Rules change at the town line. Check the municipality your property is actually in.
Gallatin County
Bear CanyonBig SkyBozemanBozeman PassBridger CanyonEast GallatinGallatin County / Bozeman AreaHebgen LakeHyaliteMiddle CottonwoodNorth GallatinReese CreekRiver RockSouth Cottonwood CanyonSouth GallatinSpringhillSypes Canyon 1Sypes Canyon 2Trail CreekUnincorporated GallatinWheatland HillsZoning District 1Zoning District 6