ADU (Accessory Dwelling Unit) Permit in Oklahoma City (2026)
ADU (Accessory Dwelling Unit) permit requirements, fees, and process for Oklahoma City, OK. Find out if you need a permit and how to apply.
Yes, a ADU (Accessory Dwelling Unit) permit is required in Oklahoma City, OK.
A ADU (Accessory Dwelling Unit) permit is required in Oklahoma City, OK. The Oklahoma City Planning and Development Services handles permit applications for Oklahoma City. Below you will find the current thresholds, fees, and process for obtaining a adu (accessory dwelling unit) permit in Oklahoma City.
When Is a Permit Required?
When a ADU (Accessory Dwelling Unit) Permit Is Required in Oklahoma City: All ADU construction
Permit Fees
ADU (Accessory Dwelling Unit) Permit Fees in Oklahoma City: $1,500–$6,000. Estimated timeline: 4-8 weeks.
Estimated timeline: 4-8 weeks
How to Get a ADU (Accessory Dwelling Unit) Permit in Oklahoma City
Verify whether your project meets the permit threshold in Oklahoma City: All ADU construction.
Prepare your permit application and plans. Contact the Oklahoma City Planning and Development Services at https://www.okc.gov/departments/planning for required documentation.
Submit your application online at https://okc.gov/permits or in person at the Oklahoma City Planning and Development Services.
Pay the permit fee: $1,500–$6,000.
Wait for plan check approval. Estimated timeline: 4-8 weeks.
Schedule required inspections through https://okc.gov/permits. All inspections must pass before project is finalized.
Important: Oklahoma City building permit required. Utility connection fees apply for independent plumbing.
Oklahoma City Planning and Development Services
Phone: (405) 297-2623
Website: https://www.okc.gov/departments/planning
Online Permits: https://okc.gov/permits
Hours: Mon-Fri 8:00am-5:00pm
Frequently Asked Questions
Can I build an ADU (backyard cottage) on my Oklahoma City property?
Yes. Oklahoma City allows accessory dwelling units on single-family lots in R-1 and R-2 residential zones. The maximum size is typically 800 sqft. You'll need a building permit from OKC Planning and Development Services. Oklahoma has no statewide ADU law, so all rules are local. No owner-occupancy requirement. OKC permit fees are modest compared to coastal cities.
What are Oklahoma City's STR (Airbnb) rules?
Oklahoma City requires a Short-Term Rental License for rentals of 30 days or fewer. The annual license fee is approximately $150. Occupancy is limited to 2 guests per bedroom. Noise ordinance compliance and safety equipment (smoke detectors, CO detectors) are required. OKC collects Oklahoma's 4.5% Hotel/Motel Tax plus local lodging tax on STR income.
Is Oklahoma City in a tornado zone and how does that affect building permits?
Yes. Oklahoma City is in the heart of Tornado Alley and experiences significant severe weather. Oklahoma adopted the most current IRC/IBC with tornado shelter provisions. New homes over a certain size may be required to include a safe room. FEMA provides safe room rebates through state programs. Oklahoma also experiences significant ice storms and hail — building permits for storm damage repairs are common.
What are my property's setback requirements in OKC?
Setbacks in Oklahoma City depend on your zoning district. In R-1 (the most common single-family zone), the front setback is 25 ft, side setbacks are 5 ft, and the rear setback is 20 ft. Look up your property's zoning on the OKC GIS portal or contact OKC Planning. Accessory structures like sheds and ADUs have different (typically reduced) setbacks.
Can I run a business from my home in Oklahoma City?
Yes, with restrictions. Home occupations are allowed in residential zones but must be clearly incidental to the residential use. No customer traffic, no exterior signage (over 1 sqft), no employees who don't live in the home. Oklahoma also has a Cottage Food Law allowing home-based food sales up to $50,000/year without a food establishment permit — one of the more permissive caps in the region.
Source: Oklahoma City Building Code — ADU (Accessory Dwelling Unit) Requirements. Last verified April 6, 2026. View source