Permit Required? Required
Typical Fee Range $1,500–$4,000 Fees include building, zoning, and separate trade permits. Impact fees for water/sewer may also apply.
Fee Method Valuation-based
Apply Online Apply at City of Dallas Development Services Department →

What's Required in Dallas

  • Permit required for all Accessory Dwelling Units (ADUs), detached or attached
  • ADU must be located on a lot with a primary single-family residence
  • Owner-occupancy of either the main house or the ADU is required in most zones
  • Maximum floor area is generally capped at 700 sq ft or 25% of the main house
  • Full construction plans including structural, MEP, and energy calcs (COMcheck) are required
  • Public hearing or 'Board of Adjustment' approval may be required if not 'by-right' in your zone

How to Get a ADU Permit in Dallas

1

Step 1: Zoning Verification

Consult with a DSD Planner to see if ADUs are allowed on your specific lot by-right.

2

Step 2: Professional Plans

Hire an architect to create a full set of residential construction documents.

3

Step 3: Application Submission

Submit a 'Residential New Construction' application via eServices.

4

Step 4: Plan Review & Fees

The city reviews for building code, zoning, and fire safety. Pay permit and impact fees.

5

Step 5: Construction Inspections

Schedule the same series of inspections as a standard home build (Slab, Frame, Trades, Final).

Frequently Asked Questions

Yes, but it depends on your property's specific zoning; recent 2024 changes have expanded ADU rights in many areas.
Permit fees usually exceed $1,500, with additional costs for water/sewer connections.
Typically 700 square feet, though this can vary by zoning overlay.