ADUs are allowed in LeanderTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Leander, TX
Is your property eligible for an ADU?
# of Properties
7,429
Owner-occupied
75%
Zoning districts
30
Avg Home Value
$398,777
Median Lot Size
0.18 acres
Avg Income
$115,187
Residential Types:
7,429 housing units
Single Family
3%
Other
97%
Zoning Districts:
8,392 parcels · 30 districts
SFU
56%(4,731)
SFC
9%(771)
SFE
9%(755)
SFL
4%(335)
Other
21%(1,800)
ADU Rules
What can you build in Leander, TX?
Leander, 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
Interior / Attached ADU Size Limits
- –Maximum size is the greater of 900 sq ft or 40% of primary dwelling gross living area; no maximum on lots > 3 acres
Detached ADU Size Limits
- –Maximum ADU size is the greater of 900 sq ft or 40% of the primary dwelling's gross living area; no maximum if lot size exceeds 3 acres (130,680 sq ft).
Max Units
- –1 ADU per lot (residential or industrial districts)
Owner Occupancy
- –Owner must occupy either the principal or ADU
Parking
- –1 space/ADU; max 4 off-street spaces per single-family lot; lots with an ADU must provide 2 enclosed garage spaces + 2 additional off-street spaces (driveway may count); 5% transit reduction within 300 ft of a transit stop.
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.
Williamson County