ADUs are allowed in DenisonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Denison, TX
Is your property eligible for an ADU?
# of Parcels
12,993
Zoning districts
21
Avg Parcel Value
$234,352
Zoning Districts:
13,203 parcels · 21 districts
SF7.5
41%(5,408)
SF5
25%(3,239)
2F
12%(1,640)
MF1
5%(668)
Other
17%(2,248)
ADU Rules
What can you build in Denison, TX?
Denison, 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
Max Units
- –Duplex/multifamily: 0 per lot (prohibited).
- –Single-family: none specified.
Owner Occupancy
- –Owner occupancy not required.
Parking
- –ADUs are not listed in the off-street parking schedule; parking for new/unlisted uses is set by the planning director (Sec. 28.50.7.D). The minimum schedule applies in all districts except CBD (Sec. 28.50.6.A), so CBD has no schedule-based minimums.
Rental Restrictions
- –Accessory dwellings (attached or detached) shall not be rented or used as a place of abode/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.
Grayson County