ADUs are allowed in AnnaTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Anna, TX
Is your property eligible for an ADU?
# of Properties
10
Zoning districts
14
Zoning Districts:
805 parcels · 14 districts
SF-7.2
51%(410)
C-1
10%(84)
SF-6.0
9%(72)
AG
7%(58)
Other
22%(181)
ADU Rules
What can you build in Anna, TX?
Anna, 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 or attached ADU
Detached ADU Size Limits
- –Maximum size of 1,000 sq ft for a detached accessory dwelling unit
- –Maximum size of 50% of the principal dwelling’s floor area for a detached accessory building
Owner Occupancy
- –Owner must occupy the principal dwelling or ADU as permanent residence.
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.
Collin County