For a permit in Oklahoma, check that the code sheet cites the codes the Oklahoma Uniform Building Code Commission (OUBCC) adopts in OAC Title 748, Chapter 20: since September 14, 2026, the 2024 IBC, IRC, IEBC, IFC, IMC, IPC, and IFGC with Oklahoma amendments, and since September 14, 2024, the 2023 NEC. Then confirm who reviews the plans: a city or county with an agreement on the State Fire Marshal’s AHJ list, or the State Fire Marshal itself, which permits all state-owned buildings and says it will accept some 2018-code submittals until March 14, 2027. AI can flag conflicts; the design professional and the building official decide compliance.
Which Oklahoma codes apply to a set of drawings?
The Oklahoma Uniform Building Code Commission Act, 59 O.S. 1000.20 and following, gives the Oklahoma Uniform Building Code Commission (OUBCC) the power and duty to review and adopt the codes and standards for residential and commercial construction used by all entities in the state. Under section 1000.23 those codes are the minimum standards: public projects, municipalities, and other political subdivisions must meet them and may enforce higher standards. Section 1000.29 lets a jurisdiction adopt codes with higher standards, or amend the adopted codes for local conditions with the Commission’s approval. Technical committees review each model code and recommend amendments, and the Commission adopts the result by permanent rule in Oklahoma Administrative Code Title 748, Chapter 20, one subchapter per code: the IBC for commercial building construction (748:20-2), the IFC for residential and commercial fire prevention and fire protection systems (748:20-4), the IRC for one- and two-family dwellings and townhouses (748:20-6), the IEBC for commercial existing buildings (748:20-8), and the NEC, IFGC, IMC, and IPC for commercial electrical, fuel gas, mechanical, and plumbing construction (748:20-10, 748:20-12, 748:20-14, and 748:20-16). The Codes and Rules page says the base model codes are adopted by reference and only the state amendments are published there.
The OUBCC’s adoption pages for the IBC, the IRC, and the IEBC, IFC, IMC, IPC, and IFGC each list a permanent rule adopting the 2024 edition effective September 14, 2026, superseding the 2018 editions, which had taken effect on September 14, 2021, or for the IRC on September 14, 2022. The IBC rule and the IRC rule cite 43 Ok Reg, Number 20, adopt named printings of the 2024 codes, say the Commission expressly chose not to adopt the 2021 editions for any purpose, and say ICC errata were not reviewed or incorporated. The NEC page lists the 2023 NEC as effective since September 14, 2024. The IEBC page prints a 2024 date and the words “2018 Edition” beside the 2024 rule, but the rule’s own source note and the superseded date of the 2018 entry both give September 14, 2026. The OUBCC calls its rule copies unofficial; the official text is in the Oklahoma Administrative Code and the Oklahoma Register. All checked October 30, 2026.
A few Oklahoma choices change what a reviewer looks for. No IBC appendices are adopted statewide, though a jurisdiction may adopt them. The IBC rule amends the Section 423 storm shelter provisions for Group E occupancies and emergency operations facilities and updates its references to ICC 500-2023 and ACI 318-25, and the IEBC rule amends the storm shelter provision for additions to Group E occupancies. The IRC rule moves the dwelling sprinkler and pool provisions into new Appendices BP and BQ and creates Appendix BR, Residential Tornado Provisions; none of the three applies unless a jurisdiction adopts it. The Proposed Rules page says rulemaking was expected to begin in fall 2026 to adopt the 2024 International Swimming Pool and Spa Code and to amend the 2024 IBC, IEBC, IFC, and IRC for affordable housing and consolidated dwellings, and the OUBCC home page says a committee has begun reviewing the 2026 NEC and calls for members of a committee to review the commercial provisions of the 2021 and 2024 IECC. None of those changes had been adopted when we checked.
Energy is where two state sources read differently. The IBC rule changes the International Energy Conservation Code entry in its Chapter 35 referenced standards to the 2006 edition, and the IRC rule adopts Chapter 11 on energy efficiency with Oklahoma modifications, while the State Fire Marshal’s building permit requirements say energy conservation requirements were omitted by the OUBCC. Confirm with the reviewing authority whether it reviews commercial energy compliance and under which edition. 59 O.S. 1000.31, added in 2025, also refers to the 2018 IRC as adopted by the OUBCC for family and large child care homes, so confirm the basis for a child care home with the Department of Human Services and the State Fire Marshal.
Plan review follows the authority having jurisdiction. The OUBCC’s FAQ says local jurisdictions interpret and enforce the adopted codes, and that in unincorporated areas the Construction Industries Board enforces the electrical, mechanical, plumbing, and fuel gas codes while the State Fire Marshal enforces the commercial building code. The State Fire Marshal’s AHJ page sets the order: it permits every state-owned or state-occupied project, and it has jurisdiction for the whole state except where a county, city, or town has signed an agreement with it, renewed every three years, that makes that government responsible for plan reviews and inspections, including fire alarm, sprinkler, and suppression systems. It has no jurisdiction on tribal trust property unless the tribal government asks it to review. Its plan review page says the 2024 codes are in effect, that it will accept plan submittals designed, or bid and bonded, this year to the 2018 codes until March 14, 2027, and that reviewers may ask for proof. The same page requires a code sheet listing the codes used and the OUBCC modifications, design letters for the foundation, structural, mechanical, electrical, and plumbing design, a separate permit for each storm shelter or safe room, and deferred submittals only for listed systems, such as fire alarm, sprinkler, and hood suppression, after the building permit is issued. Permit routing is on the Oklahoma page, and the model codes have their own guides: IBC, IRC, IEBC, IFC, and NFPA 70.
Trace the OUBCC codes through the set
| Review question | Sources to compare | Decision to record |
|---|---|---|
| Code edition and submittal date | Cover sheet, code sheet, general notes, OUBCC adoption pages, planned submittal date | Confirm the 2024 IBC, IRC, IEBC, IFC, IMC, IPC, and IFGC as adopted by the OUBCC are cited, or record the reviewer’s acceptance of the 2018 editions for a project designed, or bid and bonded, in 2026. |
| OUBCC modifications | Code sheet, OUBCC permanent rules, occupancy and egress plans | Check that the code sheet references the OUBCC modifications, and that design choices relying on an Oklahoma amendment, such as child care or lodging in a dwelling, cite the amended section. |
| Storm shelters | Life safety plans, shelter drawings, ICC 500 documentation, enrollment and staff letter, permit list | For schools, additions to schools, and emergency operations facilities, confirm the shelter requirement and occupant capacity follow the Oklahoma amendments to IBC Section 423 and IEBC Section 303, and that the shelter has its own permit where the State Fire Marshal reviews. |
| Reviewing authority | Project address, State Fire Marshal AHJ list, ownership and occupancy, land status | Record whether a city, a county, or the State Fire Marshal reviews the plans, and whether the building is state-owned or state-occupied or on tribal trust property. |
| Electrical and energy basis | Electrical notes, panel schedules, energy forms, IBC Chapter 35 references | Confirm the 2023 NEC is cited, and record which energy code, if any, the reviewer applies, since the IBC rule refers to the 2006 IECC and the State Fire Marshal says energy requirements were omitted. |
| Deferred submittals and design letters | Cover sheet, fire alarm and sprinkler notes, design letters, specifications | Check that only systems the reviewer allows to be deferred are listed, that each names the NFPA standard the adopted code requires, and that design letters cover the foundation, structural, mechanical, electrical, and plumbing design. |
Storm shelter documents continue in the ICC 500 guide, sprinkler and alarm sheets in the NFPA 13 guide, the NFPA 72 guide, and the fire sprinkler checklist, mechanical, fuel gas, and plumbing in the IMC, IFGC, and IPC guides, structural concrete in the ACI 318 guide, accessible details in the ICC A117.1 guide, and the full set in the architectural drawing checklist. Other states that split review between state and local offices are in the Kentucky guide and the South Carolina guide.
Example: a school addition submitted under the 2018 codes
Hypothetical example. A two-story classroom addition to a public elementary school in a small Oklahoma town is designed in spring 2026, bid in November, and submitted in December 2026. Neither the town nor the county appears on the State Fire Marshal’s AHJ list. The code sheet cites the 2018 IBC and IEBC with OUBCC modifications and does not say whether the project qualifies for the State Fire Marshal’s 2018-code window. The storm shelter in the addition is sized from the addition’s calculated occupant load, no enrollment and staff letter is included, the deferred submittal list includes the fire alarm, the sprinkler system, and the storm shelter, and the cover sheet says the plans go to the town building inspector.
The code sheet cites the 2018 IBC and IEBC, which the State Fire Marshal accepts until March 14, 2027 only for projects designed, or bid and bonded, in 2026, and the set gives no basis for that acceptance. The storm shelter capacity is based on the addition’s calculated occupant load, while the Oklahoma amendment to IEBC Section 303.2.1 in the 2024 rule bases it on enrolled students and staff, submitted on district or school letterhead. The storm shelter is listed as a deferred submittal, while the State Fire Marshal permits each storm shelter separately and does not list shelters among the systems it allows to be deferred. The cover sheet routes the plans to the town, which has no AHJ agreement. Confirm the code edition, the shelter capacity basis, the permits, and the reviewing authority.
The architect documents the 2026 design and bid dates for the State Fire Marshal or updates the set to the 2024 codes, obtains the enrollment and staff figures on district letterhead, applies for a separate storm shelter permit, and corrects the reviewing authority on the cover sheet. The finding is a coordination conflict; the State Fire Marshal decides compliance.
Review an Oklahoma set with Groundbook
Upload the current drawings and specifications to Groundbook, and state the edition, amendments, and review scope in your instructions. The OUBCC publishes its permanent rule for each adopted code as a free PDF on its Codes and Rules pages, and the State Fire Marshal publishes its submittal requirements on its plan review page. Upload the OUBCC rules your project relies on as code files, with the 2024 International Codes, ICC 500, and the 2023 NEC from copies you are licensed to use where the license permits uploading them. See how Groundbook works with local and licensed codes.
Compare the cover sheet, code sheet, and every discipline’s general notes with the architectural, life safety, accessibility, structural, mechanical, plumbing, fuel gas, electrical, fire protection, storm shelter, and energy documents. Flag citations to 2018 or 2021 editions of the IBC, IRC, IEBC, IFC, IMC, IPC, or IFGC unless my instructions say the reviewer accepted the 2018 codes, electrical notes not on the 2023 NEC, a code sheet that does not reference the OUBCC modifications, storm shelter capacity or permits that do not follow the supplied Oklahoma amendments and reviewer requirements, deferred submittals for systems the reviewer does not allow, and missing design letters. Use the supplied OUBCC rules and model codes and cite both sources.
Groundbook links each potential finding to the note or sheet and to the OUBCC rule or model code you uploaded. It compares what the documents state; it does not decide which edition a reviewer accepts, which authority reviews the plans, or whether a storm shelter is required.
Document review does not certify compliance, issue a permit, or replace the design professional, the local building official, the State Fire Marshal, or the Construction Industries Board.