ADUs are allowed in HendersonvilleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Hendersonville, TN
Is your property eligible for an ADU?
# of Properties
19,754
Owner-occupied
80%
Zoning districts
15
Avg Home Value
$526,686
Median Lot Size
0.36 acres
Avg Income
$109,953
Residential Types:
19,754 housing units
Residential
100%
Zoning Districts:
22,043 parcels · 15 districts
SR-1
61%(13,540)
SR-2
16%(3,435)
MXR
11%(2,413)
ER
3%(640)
Other
9%(2,015)
ADU Rules
What can you build in Hendersonville, TN?
Hendersonville, 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: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum size is 40% of the combined heated area of the principal dwelling and the apartment (equivalent to two-thirds of the principal dwelling’s heated area).
Detached ADU Size Limits
- –Detached ADUs are prohibited on lots smaller than 30,000 sq ft (no variance).
- –With a Conditional Use Permit, a detached ADU is limited to 1,200 sq ft and also to the accessory-roofed-structures cap: the lesser of 50% of the principal dwelling’s gross floor area or a fixed cap by lot size (1,800 sq ft on 30,000–43,559 sq ft lots; 2,000 sq ft on 1–<3 acre lots; 3,000 sq ft on ≥3-acre lots).
Owner Occupancy
- –Owner must reside in either principal or ADU 75% of the year
Parking
- –4 off-street spaces per ADU; garage/carport spaces do not count; only one driveway serves both units; for single-family dwellings, parking may be in private driveways but cannot encroach on public right-of-way or sidewalk
Rental Restrictions
- –Short-term rentals prohibited; ADU occupancy restricted to specified family members or a domestic employee/their family; renting to unrelated tenants is prohibited
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