ADUs are allowed in League CityTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for League City, TX
Is your property eligible for an ADU?
# of Properties
38,500
Owner-occupied
81%
Zoning districts
24
Avg Home Value
$380,144
Median Lot Size
0.18 acres
Avg Income
$143,542
Residential Types:
38,500 housing units
Single Family
1%
Condos
2%
Other
97%
Zoning Districts:
44,449 parcels · 24 districts
RSF-7
69%(30,865)
RSF-5
14%(6,166)
OS
3%(1,490)
RSF-10
2%(1,091)
Other
11%(4,837)
ADU Rules
What can you build in League City, TX?
League 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: Special Permit
Detached ADU Size Limits
- –Maximum ADU size is limited by the accessory-structures aggregate cap: 30% of the residence’s livable area or 15% of lot area, whichever is greater.
Rental Restrictions
- –ADUs may be approved only if occupied by up to two relatives of the primary household; renting to unrelated tenants is prohibited.
- –Any short-term rental (including rooms/guest houses) requires a city STR permit; otherwise STR use is illegal.
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.
Galveston County