ADUs are allowed in BaytownTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Baytown, TX
Is your property eligible for an ADU?
# of Properties
20,381
Owner-occupied
66%
Zoning districts
16
Avg Home Value
$186,370
Median Lot Size
0.18 acres
Avg Income
$69,027
Residential Types:
20,381 housing units
2-3 Family
1%
Other
99%
Zoning Districts:
25,313 parcels · 16 districts
SF2
66%(16,585)
SF1
11%(2,770)
UN
6%(1,529)
GC
6%(1,506)
Other
12%(2,923)
ADU Rules
What can you build in Baytown, TX?
Baytown, TX 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 size of 1,000 sq ft for an Internal (Integrated) ADU
- –Maximum size of 50% of the principal residential building’s total floor area for an Internal (Integrated) ADU
Detached ADU Size Limits
- –Maximum detached ADU size: 1,000 sq ft
- –Maximum detached ADU size: 50% of the principal residential building’s total square footage
Max Units
- –Single-unit detached/attached: 1 ADU total (integrated or detached)
Parking
- –1 space/ADU; ADU parking adds to principal dwelling parking in SR/MR/UR. DTA district exempt from min/max. On-street/off-site credits allowed within 300 ft toward minimums.
Rental Restrictions
- –Short-term rentals prohibited in accessory structures; STRs limited to the principal single-unit dwelling; long-term rentals allowed (month-to-month or longer) for ADUs.
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
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.
Harris County