Administrative overview · FIPS 40137
Stephens County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
State Fallback
This profile identifies a handoff outside the county’s ordinary structural permitting lane.
Required jurisdiction check
Confirm the controlling local or state authority before filing.
The record is marked State Fallback. That means the county profile should be treated as a routing brief: incorporated municipalities, a state building department, or a state fire marshal may control plan review, permits, and inspections. Contact the named agency below and verify the parcel’s jurisdiction before paying a fee or scheduling field work.
Responsible agency
Oklahoma State Fire Marshal's Office; Stephens County Board of County Commissioners for county coordination
For a project in or near Stephens County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
OKSFM 405-522-5005; Stephens County Courthouse 580-255-4193; Duncan AHJ 580-251-7728
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Stephens County Courthouse, 101 S. 11th Street, Duncan, OK 73533; OKSFM, 2401 NW 23rd Street, Suite 4, Oklahoma City, OK 73107
Operating hours
N/A for state building permitting; Stephens County courthouse office hours are not consistently published in current county materials.
Review expectation
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.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
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
Frequently asked questions for Stephens County
Who handles permitting for this jurisdiction?
This record is marked State Fallback. Confirm whether a city, state agency, or other local authority controls the parcel before filing.
How should I begin an application?
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.
How long might review take?
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.
How are inspections scheduled?
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.
Which codes and exemptions should I review?
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.