ADUs are allowed in Universal CityTypes:Internal
Types:Internal
Accessory Dwelling Unit (ADU) Rules for Universal City, TX
Is your property eligible for an ADU?
# of Properties
5,718
Owner-occupied
95%
Zoning districts
20
Avg Home Value
$277,701
Median Lot Size
0.20 acres
Avg Income
$88,131
Residential Types:
5,718 housing units
Single Family
100%
Zoning Districts:
6,649 parcels · 20 districts
R3
50%(3,317)
R2
27%(1,806)
R-OT
7%(459)
R4
6%(423)
Other
10%(644)
ADU Rules
What can you build in Universal City, TX?
Universal City, TX follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Not addressed in the local bylaw
Interior / Attached ADU Size Limits
- –Maximum internal/attached ADU size: 1/3 of principal dwelling gross floor area
Max Units
- –Multifamily & manufactured housing districts (R5, MH1, MH2): 0 per lot
Owner Occupancy
- –ADUs must be owner-occupied.
Parking
- –1 space/ADU; no maximum; parking must be on the same lot unless an Alternative Parking Plan is approved; may allow alternative/shared/off-site parking with required documentation.
Rental Restrictions
- –Accessory Residential Units—Residential District must be owner-occupied; renting to non-owners prohibited.
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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ADU rules in other Texas municipalities
Rules change at the town line. Check the municipality your property is actually in.
Bexar County