ADU Rules in Dallas, TX — 2026 Guide
Check if your Dallas property qualifies for an ADU in 20 seconds
Dallas ADU Rules at a Glance
Dallas has limited ADU support. Here is what you need to know.
- Dallas restricts accessory structures to 25% of rear yard area.
- ADUs are permitted only in certain zoning districts with a special use permit.
- Owner-occupancy required — either the primary or ADU must be owner-occupied.
- Maximum ADU size limited to the lesser of 600 sqft or 20% of lot area.
What ReadyPermit Checks for Dallas Properties
Enter any Dallas address and get an instant ADU feasibility analysis covering:
Zoning Compliance
Verify your Dallas 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 Dallas 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 Dallas Property Free
Enter your address below. In under 20 seconds you will know if your Dallas lot qualifies for an ADU — no phone calls, no waiting.
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