ADUs are allowed in DecaturTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Decatur, TX
Is your property eligible for an ADU?
# of Parcels
2,881
Zoning districts
13
Avg Parcel Value
$473,561
Median Parcel Size
0.26 acres
Zoning Districts:
2,919 parcels · 13 districts
SF-2
59%(1,725)
C-2
12%(346)
PD
7%(191)
C-1
5%(141)
Other
18%(516)
ADU Rules
What can you build in Decatur, TX?
Decatur, TX follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Special Permit
Max Units
- –1 ADU per platted lot or lot of record
Owner Occupancy
- –No owner-occupancy requirement for ADUs
Parking
- –No ADU parking requirements stated; ADUs allowed by SUP; no parking in C-1A; Planning Director may interpret parking for unlisted uses.
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.
Wise County