

ADUs are allowed in LoudonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Loudon, TN
Is your property eligible for an ADU?
# of Properties
217
Owner-occupied
49%
Zoning districts
15
Avg Home Value
$410,613
Median Lot Size
1.01 acres
Avg Income
$61,672
Residential Types:
217 housing units
Residential
100%
Zoning Districts:
4,661 parcels · 15 districts
R-2
30%(1,415)
PDD
26%(1,230)
R-1-S
16%(726)
R-1
12%(548)
Other
16%(742)
ADU Rules
What can you build in Loudon, TN?
Loudon, 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
Interior / Attached ADU Size Limits
- –Maximum ADU size of 700 sq ft in the Planned Development District (PDD).
Detached ADU Size Limits
- –Maximum detached ADU gross building area of 700 sq ft in PD districts.
Owner Occupancy
- –Owner occupancy not required; ADU limited to family and guests.
Parking
- –ADU has no specific minimum; PD District caps on-site parking at 125% of the required amount; street parking allowed; on-street spaces may count toward minimums only for commercial/multi-family; in Neighborhood Edge Area, all parking must be on-site.
Rental Restrictions
- –Rentals prohibited; occupancy limited to family, domestic help or security, or occasional guests.
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.
Loudon County