ADUs are allowed in ColumbiaTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Columbia, TN
Is your property eligible for an ADU?
# of Properties
17,227
Owner-occupied
65%
Zoning districts
16
Avg Home Value
$237,370
Median Lot Size
0.27 acres
Avg Income
$74,232
Residential Types:
17,227 housing units
Residential
100%
Zoning Districts:
20,140 parcels · 16 districts
CD-3
55%(11,058)
PUD
15%(3,026)
CD-3L
11%(2,205)
CD-4
7%(1,463)
Other
12%(2,388)
ADU Rules
What can you build in Columbia, TN?
Columbia, 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 600 sq ft of habitable space, or 1,000 sq ft in CD-2.
Detached ADU Size Limits
- –Maximum detached ADU size: 600 sq ft of habitable space (1,000 sq ft in CD-2).
Owner Occupancy
- –No owner-occupancy requirement.
Parking
- –1 space per ADU; total parking cannot exceed the required amount by more than 30%; ADUs not counted for parking compliance; shared parking factors may reduce required parking.
Rental Restrictions
- –Short-term rentals allowed only with a city permit and only in districts where 'Short-Term Rental Unit' is permitted as an accessory use; otherwise prohibited.
- –Permits are annual, non-transferable and carry conditions (local contact, +1 parking, no events, code compliance) with possible revocation.
- –Long-term rental restrictions are not stated.
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.
Maury County