Codes, exemptions & field inspections
This guide translates the available agency record into a preconstruction checklist for structural scope, minor work, and inspection release. The adopted code and the issuing official control when a field condition is disputed.
Regulatory framework
For unincorporated Stephens County, the Oklahoma State Fire Marshal requires compliance with the minimum codes adopted by the Oklahoma Uniform Building Code Commission (OUBCC), including applicable current building and fire/life-safety standards; exact 2026 editions are N/A. Duncan is a current municipal AHJ and Marlow is listed in the current state AHJ list; tribal trust property follows the corresponding tribal government.
Inspection lane
For OKSFM projects, request 50% or 100% inspections by emailing angela.aguilar@fire.ok.gov or calling 405-522-5005, with at least 7 days' advance notice and the permit number plus contact details. One 50% and one 100% inspection are included in the state permit fee; failed final/reinspection visits incur the published state charge. Duncan and Marlow handle inspections within their municipal AHJ boundaries.
Minor-work playbook
No current county minor/cosmetic exemption list was found. OKSFM identifies limited elements that may begin before full permit issuance, including site work/site utilities, cast piles, pile caps, foundations, piers, grade beams, slabs, structural columns/beams, civil abutments, and retaining walls, subject to the state process.
Field rule
A permit exemption generally addresses one narrow construction trigger. It does not automatically waive zoning, land-use, floodplain, shoreline, fire, energy, electrical, utility, septic, or right-of-way requirements. Obtain written confirmation when the project involves a new structure, structural alteration, change in occupancy, or concealed work.
Inspection pipeline
Request with lead time
For OKSFM projects, request 50% or 100% inspections by emailing angela.aguilar@fire.ok.gov or calling 405-522-5005, with at least 7 days' advance notice and the permit number plus contact details. One 50% and one 100% inspection are included in the state permit fee; failed final/reinspection visits incur the published state charge. Duncan and Marlow handle inspections within their municipal AHJ boundaries.
Preserve access
Do not cover framing, reinforcement, wiring, piping, damp-proofing, or life-safety work until the required inspection has been completed and documented.
Close the record
Retain the approved plans, inspection approvals, correction responses, and final certificate or occupancy release with the property file.
Contractor verification
Use the state licensing system to verify active registration, trade credentials, bond status, and liability coverage where available. Match the legal business name to the proposal and permit application.
Planning reference
A building permit is only one part of statutory compliance. Check the local zoning, ordinance, map, or land-use reference before finalizing setbacks, height, lot coverage, access, drainage, or accessory structure placement.
No verified planning reference link is listed; ask the agency for the parcel-specific source.
Source trail
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
This record is marked State Fallback. Confirm whether a city, state agency, or other local authority controls the parcel before filing.
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact OKSFM 405-522-5005; Stephens County Courthouse 580-255-4193; Duncan AHJ 580-251-7728.
OKSFM strives for a 30-day plan review, but its current FAQ reports an approximately 4-8 week queue before review depending on project complexity, staffing, and submittal volume. Stephens County publishes no separate county review timeline.
For OKSFM projects, request 50% or 100% inspections by emailing angela.aguilar@fire.ok.gov or calling 405-522-5005, with at least 7 days' advance notice and the permit number plus contact details. One 50% and one 100% inspection are included in the state permit fee; failed final/reinspection visits incur the published state charge. Duncan and Marlow handle inspections within their municipal AHJ boundaries.
For unincorporated Stephens County, the Oklahoma State Fire Marshal requires compliance with the minimum codes adopted by the Oklahoma Uniform Building Code Commission (OUBCC), including applicable current building and fire/life-safety standards; exact 2026 editions are N/A. Duncan is a current municipal AHJ and Marlow is listed in the current state AHJ list; tribal trust property follows the corresponding tribal government. No current county minor/cosmetic exemption list was found. OKSFM identifies limited elements that may begin before full permit issuance, including site work/site utilities, cast piles, pile caps, foundations, piers, grade beams, slabs, structural columns/beams, civil abutments, and retaining walls, subject to the state process.
Field sequencing matters
Code compliance is not only a plan-review exercise. Footings, reinforcement, framing, fireblocking, wiring, piping, insulation, weather protection, and life-safety systems each have points where the work must remain accessible. Build the inspection calendar into the trade schedule instead of treating it as a final administrative step.
When a project qualifies for a narrow minor-work exemption, keep a written explanation of why it qualifies and confirm that related zoning, utility, fire, energy, or environmental rules do not create a separate approval requirement.
Closeout file
Keep the approved plan set, inspection approvals, correction responses, contractor license verification, final certificate, and any occupancy release together. A clean record protects the owner, builder, lender, insurer, and future buyer.