ADU rules for Brentwood
Accessory Dwelling Unit (ADU) Rules for Brentwood, TN
Is your property eligible for an ADU?
# of Properties
5
Zoning districts
24
Zoning Districts:
17,473 parcels · 24 districts
OSRD
54%(9,447)
R-2
36%(6,235)
C-4
3%(446)
OSRD-IP
2%(279)
Other
6%(1,066)
ADU Rules
What can you build in Brentwood, TN?
Brentwood, TN follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Max Units
- –1 accessory building per parcel (except on parcels 3+ acres).
- –No sleeping quarters in accessory buildings on parcels under 3 acres; no sleeping quarters in semi-detached structures unless parcel is 3+ acres.
Owner Occupancy
- –No owner-occupancy requirement
Parking
- –No ADU-specific off-street parking; ADUs largely precluded on typical lots (3+ acre exception); primary single-family requires 2 spaces per dwelling (excluding garage spaces).
Rental Restrictions
- –Short-term rentals prohibited; any rental of the residence or a portion must be at least 3 months (bed & breakfast lodges exempt). Renting rooms or separate quarters to unrelated tenants within a single-family dwelling is prohibited; related occupants may be allowed only if internally connected and not rented to unrelated tenants.
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.
Williamson County