Harper County, OK - 2026 Building Permit Guide

Permit Authority

Unincorporated areas of Harper County.

Department

Address

Harper County Courthouse, 311 SE 1st St, Buffalo, OK 73834

Online Permit Portal

Application Process

1. Confirm whether the project is in unincorporated Harper County and whether the county has an AHJ agreement with the State Fire Marshal.
2. If no local permit authority is assumed, submit covered permits through the Oklahoma State Fire Marshal.
3. Review for required State Fire Marshal documents and submit a complete packet.

Typical processing time: State review time depends on completeness and workload.

Source:

General Requirements

For covered occupancies and other projects requiring permit review, the State Fire Marshal is the fallback authority when no local permit requirement exists.

Required Documents

• Plans and specifications may be required by the State Fire Marshal.

Permit validity

State permits can be extended once for 6 months by addendum if requested before expiration.

Building code

Minimum statewide codes adopted by the Oklahoma Uniform Building Code Commission.

Fees

Minimum permit fee

$100 (addendum fees begin at $100 minimum)

Permit fee formula

State fee schedule applies for state-permitted projects.

Reinspection fee

$100 per site visit for additional inspections caused by noncompliance, plan deviation, or missing documents.

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

Contact the local building department to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• State Fire Marshal inspection requests (email)
• (405) 522-5005 (phone)

Scheduling deadline

State inspections generally require at least 7 days advance notice.

Inspection hours

Monday through Friday, 8:00 a.m. to 4:30 p.m. CST

Typical inspection sequence: 50 percent construction, 100 percent construction, and other inspection points as instructed in permit comments.

Additional Resources

• Building code: Minimum statewide codes adopted by the Oklahoma Uniform Building Code Commission.
• Oklahoma State Fire Marshal AHJ page
• Oklahoma State Fire Marshal FAQ
• Harper County map repository notice
• License lookup guide: Oklahoma Contractor License Requirements
• Contract template: Oklahoma Homeowner-Contractor Agreement
• Oklahoma hub: Oklahoma Contractor License & Permit Hub

Frequently Asked Questions

Harper County Building Permit FAQ

Do I need a building permit in unincorporated Harper County, OK?

For covered occupancies and other projects requiring permit review, the State Fire Marshal is the fallback authority when no local permit requirement exists.

How much does a building permit cost in unincorporated Harper County, OK?

The minimum permit fee is $100 (addendum fees begin at $100 minimum). Fees are calculated as: State fee schedule applies for state-permitted projects..

How do I apply for a building permit in unincorporated Harper County, OK?

1. Confirm whether the project is in unincorporated Harper County and whether the county has an AHJ agreement with the State Fire Marshal. 2. If no local permit authority is assumed, submit covered permits through the Oklahoma State Fire Marshal. 3. Review for required State Fire Marshal documents and submit a complete packet.

How long does it take to get a building permit in unincorporated Harper County, OK?

Typical processing time is State review time depends on completeness and workload..

How do I schedule a building inspection in unincorporated Harper County, OK?

Inspections can be scheduled via: State Fire Marshal inspection requests, (405) 522-5005. State inspections generally require at least 7 days advance notice..