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ADUs are allowed in Brenham
Types:DetachedInternal

Accessory Dwelling Unit (ADU) Rules for Brenham, TX

Is your property eligible for an ADU?

# of Parcels
5,976
Zoning districts
11
Avg Parcel Value
$388,097
Zoning Districts:
5,872 parcels · 11 districts
R1
52%(3,035)
R2
24%(1,419)
B1
12%(708)
B2
6%(373)
Other
6%(337)

ADU Rules

What can you build in Brenham, TX?

Brenham, TX follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Interior / Attached ADU Size Limits

  • –Maximum size of 1,000 sq ft
  • –Maximum size of 50% of the principal dwelling’s habitable area

Detached ADU Size Limits

  • –Maximum size is the smaller of 1,000 sq ft or 50% of the principal dwelling’s habitable area.

Owner Occupancy

  • –Owner must occupy either the main dwelling or ADU.

Parking

  • –1 on-site space per ADU; must be located to the side or rear of the primary structure; no reductions or waivers

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?

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