ADUs are allowed in GallatinTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Gallatin, TN
Is your property eligible for an ADU?
# of Properties
17,667
Owner-occupied
67%
Zoning districts
36
Avg Home Value
$419,908
Median Lot Size
0.26 acres
Avg Income
$88,499
Residential Types:
17,667 housing units
Residential
100%
Zoning Districts:
20,381 parcels · 36 districts
MRO
18%(3,657)
R-8(PRD
13%(2,660)
R-15
13%(2,561)
R-10
11%(2,263)
Other
45%(9,240)
ADU Rules
What can you build in Gallatin, TN?
Gallatin, TN 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
Detached ADU Size Limits
- –In all districts except CD-CV, CD-2A, and CD-2, a detached ADU’s footprint may be up to 50% of the principal dwelling’s footprint.
Max Units
- –1 ADU per lot
Owner Occupancy
- –No owner-occupancy requirement for ADUs.
Parking
- –0 spaces/ADU; no additional off-street parking for ADU; principal-use parking standards still apply
Rental Restrictions
- –Short-term rentals (<30 days) prohibited; cannot be used for transient accommodations.
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 Tennessee municipalities
Rules change at the town line. Check the municipality your property is actually in.
Sumner County