ADUs are allowed in PlanoTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Plano, TX
Is your property eligible for an ADU?
# of Properties
1,759
Owner-occupied
39%
Zoning districts
72
Avg Home Value
$252,793
Median Lot Size
0.06 acres
Avg Income
$117,396
Residential Types:
1,759 housing units
2-3 Family
49%
Apts (4+ units)
49%
Other
3%
Zoning Districts:
80,031 parcels · 72 districts
SF-7
39%(30,990)
SF-9
23%(18,245)
SF-6
12%(9,627)
PH
5%(4,297)
Other
21%(16,872)
ADU Rules
What can you build in Plano, TX?
Plano, 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: By Right
Owner Occupancy
- –Owner-occupancy not required.
Parking
- –1 space/ADU; max = min + 10% (1.1); no ADU-specific exemptions.
Rental Restrictions
- –STRs require a minimum two-night stay; the Backyard Cottage and main dwelling count as one STR residence and cannot be rented as two separate STRs.
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.
Collin County