What Oklahoma Requires for CO Detectors Under Amended IRC

Last verified: August 24, 2026

The Uniform Building Code Commission built Oklahoma carbon monoxide detector laws for homes out of adopted code. OAC 748:20-6-1 takes the 2018 IRC as the statewide minimum for one- and two-family dwellings and townhouses, and the Chapter 3 modification schedule at 748:20-6-8 leaves Section R315 alone, so the model text is what governs. Work requiring a permit on an existing dwelling, and the creation of a sleeping room in one, has to bring carbon monoxide alarms up to what a new dwelling would need.

Local implementation materials, such as City of Norman guidance, show the practical trigger and placement workflow used by code officials for fuel-burning sources and attached-garage risk. This means statewide certainty is strongest in code adoption and permit workflow, while day-to-day execution can vary by local enforcement practice.

Oklahoma compliance files should preserve adopted-code citations, room-level placement records, and final inspection results. Noting local code-edition adoption dates in each compliance packet also strengthens enforcement readiness.

Quick Safety Summary

CO detector requirements for Oklahoma
Applies to homes?	Yes
Applies to rentals?	Yes
Applies to hotels/STRs?	Yes
Applies to schools?	Yes, under a condition
Applies to workplaces?	No

Schools and workplaces

Schools: it depends, and the test is one you can apply to the building itself. Oklahoma adopts the fire code as a statewide minimum and its modification list leaves the carbon monoxide sections untouched, which was checked rather than assumed. OAC 748:20-4-1(a), a permanent rule effective 14 September 2021, adopts the International Fire Code 2018, second printing of April 2018, as the statewide minimum code for residential and commercial fire prevention under 59 O.S. Section 1000.23. Across all 89 pages of the modification rule "1103.9" never appears and "915" appears twice, both of them millimetre conversions in the energy storage rules rather than references to the section. So Section 915.1.1 applies as published and a classroom in a Group E occupancy is covered where a condition in Sections 915.1.2 through 915.1.6 exists, with Section 1103.9 carrying the same conditions to a school already standing. Section 915.2.3 adds what happens after the detector sounds: alarm signals "shall be automatically transmitted to an on-site location that is staffed by school personnel", excepting a Group E occupancy with an occupant load of 30 or less. Because Oklahoma's adoption is a statewide minimum rather than a ceiling, that sentence is the one thing about an Oklahoma classroom that no municipality can make cheaper. A minimum code is a floor and not an option, so a municipality may require more and cannot require less, and the Uniform Building Code Commission Act leaves a political subdivision free to enact codes containing higher standards. The state health department lodging rule at OAC 310:285-3-5(c), which answers an Oklahoma hotel, is written for guest rooms and has nothing to say about a classroom.

Workplaces: Oklahoma places no carbon monoxide detection duty on an office, shop or other workplace. Federal and state occupational rules set an exposure limit for carbon monoxide in air; they do not require a detector to be installed, and this row is about installation. Section 915.1.1 of the 2018 International Fire Code, adopted as the statewide minimum by OAC 748:20-4-1(a) and untouched by a modification rule in which "915" appears only as two millimetre conversions, reaches Group I-1, I-2, I-4 and R occupancies and classrooms in Group E occupancies, with no Group B, F, M or S. The state other carbon monoxide instrument, OAC 310:285-3-5(c), sits in the health department lodging establishment rules and requires a detector "in each guest room which has a gas appliance inside it", which reaches a guest room and no other kind of room.

When Are CO Alarms Required?

Buildings with fuel-burning appliances
Buildings with attached garages
New construction
When building permits are required
IRC Section R315.2.2, adopted statewide unmodified by OAC 748:20-6-1, ties existing-dwelling obligations to permit-triggered alterations repairs or additions.

Where to Install CO Alarms

Outside each separate sleeping area, in the immediate vicinity of the bedrooms, under Section R315.3 of the 2018 International Residential Code as adopted statewide.
Inside a bedroom where a fuel-burning appliance is located in that bedroom or in its attached bathroom, under the same section.
Oklahoma's adopted carbon monoxide section carries no per-storey rule, and that is worth saying because local handouts often print one. Section R315.3 asks for the sleeping-area location and the in-bedroom case and stops there. The "on each additional story of the dwelling, including basements" requirement belongs to Section R314.3, which governs smoke alarms, and it is the single most commonly borrowed sentence in this subject. A basement with no sleeping area in it triggers no carbon monoxide alarm under the state minimum, though a city may require more.

For detailed placement guidance beyond legal requirements, see where to place carbon monoxide detectors.

Device Requirements

Listed to UL 2034 under Section R315.1.1, and a combination carbon monoxide and smoke alarm listed to UL 2034 and UL 217 together.
Primary power from the building wiring where the building is served from a commercial source, with battery backup on interruption, and permanent wiring carrying no disconnecting switch beyond overcurrent protection, under Section R315.6.
Battery operation is permitted in two cases under the same section: a building without commercial power, and an alarm installed because of the permit-triggered alterations rule rather than at new construction. That second exception is the one that matters most in Oklahoma, because the model Section R315.2.2, which the state adopted without modification, reaches permitted alteration, repair and addition work, so the commonest way an existing Oklahoma dwelling acquires an alarm is also the case where the code does not require it to be hardwired.
Interconnection is required where more than one alarm is installed in a dwelling unit, under Section R315.5, with an exception for existing areas where alterations or repairs do not remove interior finishes and expose the structure.

Landlord and Tenant Responsibilities

The cited statewide sources do not provide one broad landlord-tenant carbon monoxide duty matrix for every Oklahoma rental category.
Oklahoma runs two adoptions and reading only the residential one leads a hotel operator to the wrong conclusion. On the residential side OAC 748:20-6-1 adopts the 2018 International Residential Code and modifies no part of Section R315, so the model Section R315.2.2 ties the obligation on an existing dwelling to permitted alteration, repair or addition work. That trigger is written around one- and two-family dwellings and permits, and it genuinely settles nothing for a hotel. The hotel answer comes from the commission's other adoption, OAC 748:20-4-1, which takes the International Fire Code 2018 as the statewide minimum code for commercial as well as residential fire protection and leaves Section 915 unmodified.

Full Oklahoma landlord and tenant carbon monoxide duties, with citations

Enforcement

Enforced by: Local building officials enforce adopted residential code, while OUBCC sets statewide minimum code standards.

Enforcement typically occurs:

During plan review and inspection for new construction.
During permit workflow for covered alterations repairs and additions under IRC Section R315.2.2 as adopted.

What a Tenant Can Do in Oklahoma

When a carbon monoxide alarm stops working in a rented home in Oklahoma, these are the five routes a tenant can take and where each one comes from.

"Via general law" means the Oklahoma carbon monoxide statute itself is silent and the remedy comes from the state's landlord-tenant law instead. The remedy is available even though the alarm rule does not contain it.

"No provision found" is a finding rather than a gap in the research: the chapter that would carry that remedy was read and contains nothing either way. What was read is named beside the row.

Tenant remedies for a defective carbon monoxide alarm in Oklahoma, with the citation or the body of law searched for each.
Rent withholding	No provision foundSearched: Okla. Stat. tit. 41, the Residential Landlord and Tenant Act, read in full from the Legislature's published text of the title. There is no counterclaim, no escrow and no pay-into-court route anywhere in the title. The reading is control-tested rather than inferred: the word counterclaim appears zero times in the whole of Title 41, against 261 occurrences of landlord. Oklahoma joins Delaware and Montana as the third state in this matrix whose act does not contain the section that eight others place immediately after essential services.
Repair and deduct	Via general law41 O.S. 121(B). One month's rent since 1 November 2022, where this site published $100 until the enrolled bill was read on 2026-08-23. House Bill 3409 struck "less than One Hundred Dollars ($100.00)" and substituted "equal to or less than one month's rent". It reaches a breach materially affecting health whose repair costs no more than that, and the sequence is prescribed: the tenant notifies the landlord in writing of an intention to correct the condition at the landlord's expense after the expiration of fourteen days, the landlord fails to comply within those fourteen days or as promptly as an emergency requires, and the tenant then has the work done in a workmanlike manner and submits an itemized statement before deducting, taking the actual and reasonable cost or the fair and reasonable value of the work up to the cap. Subsection E gates the whole section twice: no right arises until the tenant has given written notice, and none arises at all where the condition was caused by the deliberate or negligent act or omission of the tenant, a family member, the tenant's animal or pet, or another person or animal on the premises with consent.
Right to end the lease	Via general law41 O.S. 121(A). The notice sets termination at not less than thirty days after receipt if the breach is not remedied within fourteen, and the tenancy ends as the notice provides unless the landlord adequately remedies within the time specified. Two faster exits sit beside it. Subsection C lets the tenant terminate immediately on written notice for a failure of heat, water, hot water, electricity, gas or another essential service. Subsection D, read on 2026-08-23 and absent from the earlier reading, lets the tenant terminate immediately on written notice specifying the noncompliance where it renders the dwelling unit uninhabitable or poses an imminent threat to the health and safety of any occupant and is not remedied as promptly as conditions require. D is the subsection a carbon monoxide case is most likely to reach.
Notice the tenant must give	Via general law41 O.S. 121(A); 41 O.S. 121(B). No waiting period before serving, but subsections A and B want different notices and a tenant who sends the wrong one gets nothing. The termination notice specifies the acts and omissions and names the date. The deduction notice states an intention to correct the condition at the landlord's expense after fourteen days have expired.
Landlord cure period	Via general law, 14 days41 O.S. 121(A). Fourteen days, and the same fourteen governs the deduction route in subsection B, so Oklahoma runs one clock where several states in this matrix run two or three. The only shortening is the emergency clause in B, which asks the landlord to act as promptly as conditions require, and the immediate termination available for essential services under C.

Applies to every row above:Oklahoma's Residential Landlord and Tenant Act is a URLTA adoption that compressed the model's remedies into a single section: 41 O.S. 121 carries termination in subsection A, repair-and-deduct in B and essential services in C. Two consequences. The whole title contains no counterclaim or pay-into-court provision at all, which the full text confirms rather than implies. And the deduction was rebuilt in 2022 and the repealed figure is still in circulation. Enrolled House Bill 3409 struck "less than One Hundred Dollars ($100.00)" from subsection B and wrote "equal to or less than one month's rent" in its place, effective 1 November 2022. This site carried the repealed figure until the enrolled bill was read on 2026-08-23, and most published guidance still carries it. Subsection D, which the earlier reading also missed, gives immediate termination on written notice where the noncompliance renders the dwelling unit uninhabitable or poses an imminent threat to the health and safety of any occupant and is not remedied as promptly as conditions require. No Oklahoma statute imposes a carbon monoxide duty on a landlord as such, so every column comes from this one section, and 41 O.S. 118 has no code-compliance paragraph for a code duty to arrive through.

Remedies last checked 2026-08-03. Compare Oklahoma with the other states.

What Oklahoma Requires in Lodging

The Oklahoma carbon monoxide requirement reaches hotels and short-term rentals.

Hotels already standing: covered too. The Oklahoma requirement reaches an existing hotel and not only one being built.

Operator duty: An Oklahoma hotel or motel operator answers to the fire code, which is a different adoption from the residential one and carries a different citation. OAC 748:20-4-1(a), a permanent rule of the Oklahoma Uniform Building Code Commission effective 14 September 2021 at 38 Ok Reg 2611, adopts the International Fire Code 2018, second printing of April 2018, "as the statewide minimum code for residential and commercial fire prevention and fire protection systems within the State of Oklahoma" under 59 O.S. Section 1000.23. The commission modifies the code chapter by chapter through subchapter 4, and it leaves the carbon monoxide provisions alone: across all 89 pages, "1103.9" never appears and "915" appears twice, both of them millimetre conversions in the energy storage rules rather than references to Section 915. So IFC 915.1.1 applies as published, requiring detection in Group I-1, I-2, I-4 and R occupancies where the conditions in 915.1.2 through 915.1.6 exist, and IBC 310.2 places transient hotels and motels in Group R-1. A minimum code is a floor rather than an option, so a municipality may require more and cannot require less. Which edition a given city enforces still matters for the detail, and an operator should ask, but it does not decide whether the duty exists.

Full Oklahoma hotel and short-term rental requirements

Penalties for Non-Compliance

No stand-alone statewide Oklahoma carbon monoxide detector fine schedule was identified in the cited code-adoption materials.

Enforcement is typically through local building-code compliance workflow tied to permits and inspections.

Additional Notes

No standalone statewide carbon monoxide alarm statute identified as of 2026. The requirements are administrative rules of the Uniform Building Code Commission, and there are two of them. Both are made pursuant to 59 O.S. Section 1000.23, and what separates them is which code and which buildings: OAC 748:20-6-1 takes the residential code for one- and two-family dwellings and townhouses, and OAC 748:20-4-1 takes the fire code, which is the one that reaches commercial occupancies including lodging.
Oklahoma code compliance is best handled as state minimum adoption plus local enforcement detail.
Operators should verify the locally adopted edition before finalizing placement and wiring assumptions.
A rented home is inside the same code as an owner-occupied one, because the adoption is by building type rather than by tenure. OAC 748:20-6-1 adopts the International Residential Code, 2018 Edition "to be the statewide minimum code for residential construction within the State of Oklahoma for one- and two-family dwellings and townhouses pursuant to 59 O.S. 1000.23", renumbered from 748:20-5-1 and effective 14 September 2022. Nothing in that sentence turns on who occupies the dwelling, so a let house answers it on the same terms as an owner-occupied one. An apartment building is not a one- or two-family dwelling and answers the fire code instead, where OAC 748:20-4-1 adopts the 2018 International Fire Code and its Section 915 reaches Group R occupancies.

Local Rules That Differ From State Law

At least one Oklahoma municipality sets CO requirements that go beyond the statewide rule. Where your property sits decides which applies, and the stricter one governs.

Oklahoma City

Oklahoma City requires a working carbon monoxide detector in every licensed short-term rental and does not ask what the building burns. Section 13-511 lists what a home sharing and short-term rental licence application must contain, and paragraph (5) is verification that the dwelling unit has working smoke detectors as city codes require, a working carbon monoxide detector, and a functioning fire extinguisher. The smoke detectors are tied back to the code; the carbon monoxide detector is not qualified at all. The duty is then stated twice over, which is unusual and makes it harder to escape. Section 59-9350 of the zoning and planning code sets standards for specific uses, and subsection B requires the host to comply with any applicable building or fire codes adopted by the city including, but not limited to, working smoke detectors, a carbon monoxide detector and a functioning fire extinguisher; subsection C requires the licence itself. So the same requirement is a condition of the licence under Chapter 13 and a condition of the land use under Chapter 59, and losing one does not release the other.

Oklahoma City Municipal Code Section 13-511(5), home sharing and short-term rental licence application, with Section 59-9350(B) and (C) in the zoning and planning code Checked 2026-08-11.

Stillwater

Stillwater asks for the strongest evidence found anywhere in this dataset, and it asks for it in two forms at once. Section 23-115.4 requires a short-term rental application to verify that the dwelling has working smoke detectors as city codes require, a working carbon monoxide detector and a functioning fire extinguisher. It then says how that requirement is met: by a signed and notarised affidavit on a form the city clerk provides, with a floorplan attached showing the location of the rooms offered for rent, the smoke detectors, the carbon monoxide detector and the fire extinguishers. Other jurisdictions ask for one of those. Richmond wants the detectors marked on a plan, Alexandria wants photographs and a signed certification, Saint Paul wants an affidavit at certificate renewal. Stillwater wants a notarised statement and a drawing, which together give the city a document it can hold against the property later and a sworn signature to hang a false statement on.

Stillwater City Code Section 23-115.4, residential short-term rental application form and process Checked 2026-08-11.

Tulsa

Tulsa's addition is about who does the testing, which nothing else in this survey addresses. Its Title 59 adopts the 2018 International Mechanical Code with amendments, and Section 101 adds a new Section 107.3.4, headed Carbon Monoxide Testing: where tests for carbon monoxide are required, the tests are to be performed by an approved testing agency, the results and any other necessary data are to be furnished to the code official, and the code official determines conformance with the code. That matters because a carbon monoxide reading taken during a mechanical inspection is otherwise whatever the person holding the meter says it is. Tulsa routes it through an agency the city has approved and puts the determination with the code official rather than the tester. Saint Paul asks for a reading; Tulsa says who may take it.

Tulsa Revised Ordinances Title 59 Section 101, adding Section 107.3.4 Carbon Monoxide Testing to the adopted 2018 International Mechanical Code Checked 2026-08-11.

What was checked:Oklahoma is the permissive end of the range this survey has been mapping. The Uniform Building Code Commission Act makes the codes the Commission adopts the minimum standards for residential and commercial construction in the state, and expressly leaves political subdivisions free to enact codes and rules of their own provided those contain higher standards and requirements than the state codes. A municipality may go up and may not go down. Compare Kentucky, where the code is mandatory and uniform and a city may not touch the technical standard at all, or Montana, where a city may not adopt a building code more stringent than the state's. What the Oklahoma cities have done with that freedom is not to rewrite placement but to build licensing around it, and the interest is in the evidence each one demands. Five municipalities were read on 2026-08-11: Oklahoma City, Tulsa, Norman, Edmond and Stillwater. Edmond carries nothing, control-tested. Norman is not in the table only because it repeats the shape Oklahoma City sets out below: Section 13-3502 makes a short-term rental licence application show operational smoke detectors and carbon monoxide detectors as the Building Code requires and fire extinguishers as the Fire Code requires, alongside a condition that every required bedroom egress window works. One thing to keep out of the reckoning. Tulsa's Title 51 amendment to Section R315.2.2 of the 2018 residential code, extending the alarm duty to permitted alterations, repairs and additions, restates the model text that OAC 748:20-6-1 already adopts unmodified statewide. That is the state answer written out locally, not a local addition, and Tulsa's entry below rests on something else. Lawton, Broken Arrow, Moore and the lake and casino towns were not searched.

Local sweep last reviewed 2026-08-11.

Official Sources & References

Oklahoma Statutes Title 59, Section 1000.1 et seq. (Uniform Building Code Commission Act) , 59 O.S. 1000.1-1000.10 establishing OUBCC authority to adopt building codes (state code, accessed 2026-02-18)
No standalone statewide CO alarm statute identified as of 2026. 59 O.S. 1000.1 et seq. creates the Oklahoma Uniform Building Code Commission and grants it authority to adopt and amend building codes statewide. CO alarm requirements enter through the commission's residential adoption at OAC 748:20-6-1, which is made pursuant to 59 O.S. Section 1000.23 and takes Section R315 of the 2018 IRC as printed.
Oklahoma Uniform Building Code Commission 2015 IRC permanent rule (superseded 14 September 2022) , Superseded adoption; its item (10) amended IRC Section R315.2.2 (building code, accessed 2026-08-23)
Kept because it is the rule most summaries of Oklahoma still describe, and because it shows what the amendment actually did. Its item (10) reprinted Section R315.2.2 and changed one thing, adding "electrical" to the second exception so that installation, alteration or repair of electrical systems joined plumbing and mechanical as exempt work. The permit trigger itself was model text. OAC 748:20-6-1 replaced this rule with the 2018 edition and modifies no part of Section R315, so the Oklahoma-specific electrical exemption is not in the operative rule.
Oklahoma Uniform Building Code Commission adopted codes resources , Residential code adoption references (building code, accessed 2026-02-17)
Official commission resource for current adopted-code context and administration.
OAC 748:20-4-1, Oklahoma Uniform Building Code Commission permanent rule adopting the International Fire Code 2018 , 748:20-4-1(a) and (b), and subchapter 4 as the modification schedule (fire code, accessed 2026-08-07)
The instrument that answers lodging, and the one the record previously lacked. Refetched on 2026-08-07 at 720,694 bytes, 89 pages, 290,502 normalised characters, control "748" at 176. Subsection (a) adopts the IFC 2018 second printing as "the statewide minimum code for residential and commercial fire prevention and fire protection systems within the State of Oklahoma" under 59 O.S. Section 1000.23. The carbon monoxide provisions survive the modification schedule untouched: "1103.9" occurs zero times in the whole rule and "915" twice, both millimetre conversions inside the energy storage provisions rather than references to Section 915. Note the URL moved: the path under /adopted-codes/ now returns HTTP 404 and the document lives under /rules/.
City of Norman visual guide to smoke and carbon monoxide detectors , Detector location and wiring guidance (local ordinance, accessed 2026-02-17)
Municipal implementation guide for placement and power expectations used in local plan review.
City of Norman 2018 code changes summary , Carbon monoxide trigger and installation notes (local ordinance, accessed 2026-02-17)
Additional local code summary supporting practical trigger interpretation in Oklahoma.
OAC 748:20-6-1 and 748:20-6-8, Oklahoma Uniform Building Code Commission permanent rule adopting the International Residential Code 2018 (39 Ok Reg 2364, eff 9-14-22) (state code, accessed 2026-08-22)

Disclaimer: This page explains the law as it stood on August 24, 2026. It is general information, not legal advice, and reading it creates no attorney-client relationship. Requirements vary by city, county and building type, and statutes and codes are amended: confirm the current text with the issuing authority before acting on it. Each requirement here cites the instrument it comes from, so you can check it at source.

Frequently Asked Questions

Does Oklahoma statewide code require CO alarms in homes?

Yes, through adopted code rather than through a statute. OAC 748:20-6-1 adopts the International Residential Code, 2018 Edition as the statewide minimum for one- and two-family dwellings and townhouses, pursuant to 59 O.S. Section 1000.23, and the Chapter 3 modification schedule at 748:20-6-8 lists every section it changes without listing Section R315. So R315 applies as printed: alarms outside each sleeping area under R315.3, and permit-triggered work on an existing dwelling pulled in by R315.2.2. Implementation is local, so confirm occupancy and permit status first, then apply local guidance on placement and power. Oklahoma property files should carry the adopted edition, the section citation and inspection sign-off records.

When does Oklahoma permit work trigger carbon monoxide alarm obligations?

IRC Section R315.2.2, which Oklahoma adopts without modification, specifically addresses alterations, repairs and additions that require a permit, requiring alarms located as for new dwellings in covered cases. This makes permit classification a key control point before work starts. Teams should coordinate with local code officials early, because scope interpretation can differ by jurisdiction. Oklahoma compliance documentation should tie each project to permit number, amended section language, and final inspection outcome.

Where should alarms be placed under Oklahoma implementation guidance?

Local Oklahoma guidance, including City of Norman materials, uses sleeping-area proximity and story-level coverage concepts that align with IRC Section R315 workflows. It also addresses bedroom placement when a fuel-burning appliance is located in that sleeping room context. Placement should be documented room by room and verified during inspection. Oklahoma operators should retain plan markups, installed-device photos, and inspection comments to support defensible compliance during transfer, leasing, or incident review.

Are Oklahoma landlords given one statewide CO duty matrix?

The statewide adoption sources cited here do not provide one complete landlord-tenant carbon monoxide matrix for every rental scenario. In Oklahoma, residential rental obligations often depend on occupancy type and local enforcement of the adopted code framework. Landlords should verify local requirements at move-in and turnover, then keep written citations in lease compliance files. Documented role assignments for installation, testing, and correction reduce dispute risk and improve inspection readiness. Local policy appendices should identify the authority having jurisdiction for each managed property.

For Oklahoma all-electric homes, which local-code factors can still require alarms?

Not automatically. Oklahoma compliance decisions should be based on adopted trigger language and project context, not only on a utility description. Attached-garage conditions or other fuel-related risk pathways can still create obligations under local code interpretation. Owners should obtain written confirmation from the local authority having jurisdiction before recording any exemption. Oklahoma files should preserve that written basis with permit and inspection records. This documentation is important for later transfer and liability review.

How does Oklahoma compare with Texas for policy design?

Oklahoma relies on statewide minimum code adoption, the 2018 IRC, plus local enforcement detail, while Texas portfolios often face a different blend of local adoption and occupancy specific statutes. Regional teams should avoid one shared template across both states without trigger-by-trigger mapping. For side-by-side planning, review Texas CO detector laws and compare permit triggers, enforcement channels, and documentation requirements. Oklahoma teams should preserve code-edition notes separately from Texas local-rule references.

Practical CO Detector Guides

Beyond legal requirements, these guides help you choose, install, and maintain CO alarms:

Where to place carbon monoxide detectors, room-by-room placement recommendations
CO detector beeping patterns, what different alarms mean
What to do if your detector goes off, emergency response checklist
CO resources and links, official agencies and safety information