ADUs are allowed in Van AlstyneTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Van Alstyne, TX
Is your property eligible for an ADU?
# of Parcels
2,377
Zoning districts
18
Avg Parcel Value
$370,090
Zoning Districts:
2,245 parcels · 18 districts
SF-1
34%(762)
PD
27%(597)
SF-2
11%(258)
AG
7%(164)
Other
21%(464)
ADU Rules
What can you build in Van Alstyne, TX?
Van Alstyne, TX follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Detached ADU Size Limits
- –Specific Use Permit threshold: ADU area over 7% of lot area
- –Specific Use Permit threshold: ADU area over 4,000 sq ft
- –Specific Use Permit threshold: ADU area greater than the primary dwelling size
Rental Restrictions
- –Renting a detached guest house is prohibited.
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.
Grayson County