ADU rules for Southlake
Accessory Dwelling Unit (ADU) Rules for Southlake, TX
Is your property eligible for an ADU?
# of Properties
9,857
Owner-occupied
2%
Zoning districts
33
Avg Home Value
$1,250,695
Median Lot Size
0.48 acres
Avg Income
$244,099
Residential Types:
9,857 housing units
Apts (4+ units)
3%
Other
97%
Zoning Districts:
13,468 parcels · 33 districts
RPUD
32%(4,313)
SF1-A
17%(2,289)
SF20A
16%(2,089)
SP1
5%(640)
Other
31%(4,137)
ADU Rules
What can you build in Southlake, TX?
Southlake, TX 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
Owner Occupancy
- –Occupancy limited to owner or owner's family; no rental.
Rental Restrictions
- –Renting of ADUs is prohibited; domestic employee/family quarters may not be rented or used as a separate dwelling in either detached or attached configurations, even when authorized by a special exception.
ADU State Law
What can you build in Texas?
- –Texas does not have a statewide ADU law. ADUs are regulated entirely at the local level.
- –ADU rules vary significantly by city, and many jurisdictions prohibit ADUs outright.
- –Counties generally lack zoning authority, but other restrictions may still apply outside city limits.
- –Outside city limits, ADU feasibility often depends on subdivision rules, deed restrictions, and septic or fire requirements.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
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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Is your property eligible for an ADU?
ADU rules in other Texas municipalities
Rules change at the town line. Check the municipality your property is actually in.
Tarrant County