ADUs are allowed in BozemanTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Bozeman, MT
Is your property eligible for an ADU?
# of Properties
2,233
Owner-occupied
34%
Zoning districts
22
Avg Home Value
$1,272,780
Median Lot Size
0.10 acres
Avg Income
$92,937
Residential Types:
2,233 housing units
Single Family
68%
Apts (4+ units)
31%
Zoning Districts:
14,945 parcels · 22 districts
RA
46%(6,858)
RB
32%(4,737)
RC
6%(933)
B-2M
4%(545)
Other
13%(1,872)
ADU Rules
What can you build in Bozeman, MT?
Bozeman, 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
Interior / Attached ADU Size Limits
- –Maximum internal/attached ADU size is the larger of 1,000 sq ft or 75% of the principal dwelling’s size.
Detached ADU Size Limits
- –Maximum detached ADU size is 1,000 sq ft or 75% of the principal dwelling, whichever is larger.
- –Detached ADU building area is capped by the principal building’s footprint multiplied by the ADU stories.
Max Units
- –1 ADU per lot
Owner Occupancy
- –No owner-occupancy requirement.
Parking
- –0 minimum; citywide max not stated; in B-3, max 2 spaces/du if parking is provided; parking for an ADU must meet all applicable standards; garage conversions allowed only if all other required parking on the lot is provided; ADUs may be placed above garages.
Rental Restrictions
- –Short-term rentals under 28 days allowed only as Type-2B with a hosting permit (ADU on the same lot as the host's primary residence).
- –Attached ADUs: short-term rentals limited to no more than one additional dwelling unit in the same building; primary residence must be occupied at least 70% of the year; hosting permit required.
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 SkyBozeman PassBridger CanyonEast GallatinFour CornersGallatin County / Bozeman AreaHebgen LakeHyaliteMiddle CottonwoodNorth GallatinReese CreekRiver RockSouth Cottonwood CanyonSouth GallatinSpringhillSypes Canyon 1Sypes Canyon 2Trail CreekUnincorporated GallatinWheatland HillsZoning District 1Zoning District 6