ADU rules for Houston

Accessory Dwelling Unit (ADU) Rules for Houston, TX

Is your property eligible for an ADU?

# of Properties

594,465

Owner-occupied

64%

Zoning districts

Avg Home Value

$360,224

Median Lot Size

0.16 acres

Avg Income

$90,844

Residential Types:

594,465 housing units

Other

100%

Zoning Districts:

674,247 parcels · 11 districts

100%(674,184)

0%(29)

0%(9)

R-2

0%(8)

Other

0%(17)

ADU Rules

What can you build in Houston, TX?

Houston, 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

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.

Harris County

Baytown Bellaire Deer Park Galena Park Hedwig Village Humble Jacinto City Jersey Village Katy La Porte Pasadena Seabrook Shoreacres South Houston Tomball Webster West University Place

See all municipalities in Harris County →See all Texas municipalities →

Browse addresses by ZIP in Houston

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