ADU Rules in Austin, TX — 2026 Guide
Check if your Austin property qualifies for an ADU in 20 seconds
Austin ADU Rules at a Glance
Austin is considered ADU-friendly. Here are the key regulations.
- Austin explicitly permits ADUs on single-family lots up to 1,100 sqft.
- No owner-occupancy requirement — ADUs can be rented independently.
- Height limit of 30 ft for two-story detached ADUs.
- ADU must maintain 10 ft rear setback and 5 ft side setback.
What ReadyPermit Checks for Austin Properties
Enter any Austin address and get an instant ADU feasibility analysis covering:
Zoning Compliance
Verify your Austin lot is zoned for ADU construction under current TX and local rules.
Setbacks & Coverage
Check required setbacks, lot coverage limits, and height restrictions for your specific parcel.
ADU Size Limits
Calculate the maximum ADU square footage allowed based on your lot size and primary dwelling.
Permit Requirements
Understand what permits and approvals Austin requires before you can break ground.
Flood & Hazard Zones
Identify if your property falls in a flood zone, fire zone, or other hazard overlay.
Lot & Parcel Data
Pull parcel boundaries, lot dimensions, and existing structures from county records.
Check Your Austin Property Free
Enter your address below. In under 20 seconds you will know if your Austin lot qualifies for an ADU — no phone calls, no waiting.
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