ADUs are allowed in ParkerTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Parker, TX
Is your property eligible for an ADU?
# of Properties
7
Zoning districts
10
Zoning Districts:
1,352 parcels · 10 districts
SF
60%(806)
SFT
26%(358)
A-O
5%(67)
NZ
4%(51)
Other
5%(70)
ADU Rules
What can you build in Parker, TX?
Parker, 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
Interior / Attached ADU Size Limits
- –Internal ADU (in-home apartment) maximum size: 2,500 sq ft of living space
- –Internal ADU (in-home apartment) maximum size: 25% of the primary dwelling’s living space (habitable area)
Detached ADU Size Limits
- –Maximum detached ADU living space of 2,500 sq ft
- –Maximum detached ADU living space of 25% of the primary residence’s living space
Max Units
- –1 ADU per lot; attached or detached (cannot have both)
Owner Occupancy
- –Owner need not live on-site.
Parking
- –No numeric ADU parking minimum; detached ADUs require site-plan ingress/egress and a driveway connecting to the main residence; general residential parking rules apply citywide.
Rental Restrictions
- –Renting to third parties prohibited; owner cannot occupy the ADU while the primary residence is rented. ADU occupancy limited to domestic/agricultural workers without charge; non-family use limited to guest stays ≤1 month (not for rent).
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