Permit Required? Required
Typical Fee Range $500–$1,500 Includes building permit and utility impact charges.
Fee Method Valuation-based
Apply Online Apply at Development Services Department →

What's Required in Oklahoma City

  • Building permit required for any secondary dwelling unit.
  • Must have full kitchen and bathroom facilities.
  • Requires architectural plan set including foundation and framing.
  • Must meet lot coverage and setback rules for accessory buildings.
  • Separate or combined utility permit for water and sewer.
  • Owner-occupancy of the primary home is often required.

How to Get a ADU Permit in Oklahoma City

1

Step 1: Zoning Check

Confirm your lot allows for a second dwelling unit.

2

Step 2: Submit Plans

Upload architectural drawings and a site plan to the portal.

3

Step 3: Agency Reviews

Checked for zoning, drainage, and building code safety.

4

Step 4: Inspections

Full series: Footing, Framing, Trades, and Final.

5

Step 5: Occupancy

Final sign-off required before the unit can be lived in.

Frequently Asked Questions

Yes, if the property meets zoning and you have a Certificate of Occupancy.
The city typically assigns a 'B' or 'Unit 2' address to the ADU.
Expect 15-20 business days for new ADU builds.