ADUs are allowed in MesquiteTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Mesquite, TX
Is your property eligible for an ADU?
# of Properties
41,973
Owner-occupied
74%
Zoning districts
39
Avg Home Value
$313,523
Median Lot Size
0.17 acres
Avg Income
$87,502
Residential Types:
41,973 housing units
Single Family
96%
2-3 Family
2%
Apts (4+ units)
2%
Zoning Districts:
47,497 parcels · 39 districts
R-3
48%(22,940)
R-2A
29%(13,996)
C
4%(1,762)
GR
3%(1,276)
Other
16%(7,523)
ADU Rules
What can you build in Mesquite, TX?
Mesquite, 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 ADU size of 500 sq ft, or 1,000 sq ft on Agriculture-zoned lots over 1 acre; may be modified with the Conditional Use Permit.
Detached ADU Size Limits
- –Maximum ADU size of 500 sq ft, or 1,000 sq ft on Agriculture-zoned lots over 1 acre.
Max Units
- –1 ADU per property.
- –In AG and R districts: 1 ADU per lot; in D and A districts: not permitted.
Owner Occupancy
- –Property owner must live on the property.
Parking
- –Minimum 4 off-street spaces per property with an ADU (behind the front and exterior side lines, non-tandem); no max; ADU CUP required with lot size/owner-occupancy criteria; general standards: 2 spaces per unit plus a 2-car enclosed garage on lots platted after 10/1/1984 (total 4 spaces when an ADU is added).
Rental Restrictions
- –ADU cannot be rented or sold separately.
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.
Dallas County