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Carbon monoxide alarm requirements, read September 23, 2026

Nebraska CO Detector Laws: The Sale Triggers It

Nebraska requires an alarm when the house changes hands.

Yes
Required in a home
Neb. Rev. Stat. 76-604
Only on the trigger
Reaches a home already lived in
10 of the 42 states reach one
Covered
In a rented home
one of 28 states that reach a tenancy
In the code
Where the code says to put it
one of 20 states that print a spot
September 23, 2026
Read
off the state’s own published code
The short answer

Nebraska requires an alarm when the house changes hands.

Nebraska's Carbon Monoxide Safety Act requires an alarm on each habitable floor of a single-family or multifamily dwelling that has a fuel-fired heater or appliance, a fireplace, or an attached garage, but only when the dwelling was built on or after January 1, 2017, is offered for sale or transfer, undergoes an interior alteration or repair needing a permit, or is rented and changes tenants, so a house someone already owns and lives in is not reached until one of those happens.

In Nebraska the duty attaches at a closing, which means a house can sit for forty years without ever meeting it. The trigger the code names is a sale or transfer, a permitted interior alteration, construction on or after January 1, 2017, or a change of tenant occupancy.

Sale or transferRented homesNeb. Rev. Stat. 76-604read September 23, 2026

The section itself

Neb. Rev. Stat. 76-604, and what it attaches to

The sentence below is the whole of it. Everything that separates Nebraska from the state across the river sits inside that sentence and inside the clause that conditions it, which is why it is reproduced rather than summarised.

A requirement and the event it waits for are two different facts, and a roundup that carries the first without the second is how the same state gets described as strict and as lax in the same week. Both are on the card, with the citation, the title the code gives the section and the link the sentence was read from.

The section

Seller of single-family dwelling; duties; interior alterations requiring permit; owner; duties.

Neb. Rev. Stat. 76-604

The seller of a single-family dwelling that is offered for sale or transfer on or after January 1, 2017, and that has a fuel-fired heater or appliance, a fireplace, or an attached garage shall ensure that an operational carbon monoxide alarm is installed on each habitable floor of the dwelling or in a location specified in any building code adopted by the state or by the political subdivision in which the dwelling is located.
Nebraska Revised Statute 76-604, Nebraska Legislature, read September 23, 2026. Read it at the source

A conveyance is the event, so the alarm arrives with a new owner and the section says nothing to the one who stayed put.

What the duty waits for

In Nebraska the requirement attaches to a sale or transfer, a permitted interior alteration, construction on or after January 1, 2017, or a change of tenant occupancy

In Nebraska the duty attaches at a closing, which means a house can sit for forty years without ever meeting it. The trigger the code names is a sale or transfer, a permitted interior alteration, construction on or after January 1, 2017, or a change of tenant occupancy.

This is the reading that decides whether the law is speaking to a particular house. 10 states wrote the duty against the dwelling itself and 25 wrote it against an event, and a national article that prints only the first number reads as though every one of the 42 belonged to the first group. The 25 triggers are below, grouped by shape.

The twenty five states whose duty waits for an event. Grouped by what it waits for, then alphabetical.
StateWaits forThe trigger the code names
AlabamaPermit or new buildresidential construction governed by the adopted residential code
ArkansasPermit or new buildwork governed by the adopted residential code, since the statutory requirement was repealed in 2013
HawaiiPermit or new buildbuilding, altering, replacing or repairing a dwelling under the State Residential Code
IndianaPermit or new builda permitted alteration, addition or complete replacement of the electrical system, and the construction of a new dwelling
MichiganPermit or new buildinitial construction of the dwelling, a renovation of an existing dwelling for which a permit is required, or the addition or creation of a bedroom
New MexicoPermit or new buildconstruction, alteration, repair, replacement or a change of occupancy that is subject to a Construction Industries Division permit
OklahomaPermit or new buildresidential construction, alteration, replacement or repair covered by the statewide minimum residential code
South CarolinaPermit or new buildconstruction under the residential code the state adopts
TennesseePermit or new buildbuilding a dwelling, changing an existing building over to a dwelling, or adding thirty square feet or more of interior space
TexasPermit or new buildconstruction, alteration, remodeling, enlargement or repair of a residential structure inside a municipality
UtahPermit or new buildbuilding, altering, remodeling or repairing a dwelling under the state construction code
ColoradoSale or transferthe sale or transfer of an existing dwelling, and separately a permitted alteration or a change of tenant occupancy
LouisianaSale or transferthe sale or lease of the dwelling, and separately the professional installation of a home generator
MaineSale or transferacquiring a single family dwelling or multiapartment building by sale or exchange, with a separate continuous duty on multifamily units and rentals
NebraskaSale or transfera sale or transfer, a permitted interior alteration, construction on or after January 1, 2017, or a change of tenant occupancy
New JerseySale or transfera sale, a lease, or any other change of occupancy of a dwelling unit in a building with fewer than three dwelling units
OregonSale or transferconveying fee title or transferring possession under a land sale contract, and separately the start of a new tenancy
Rhode IslandSale or transferthe transfer of title to an occupied residential property, with a separate duty on new construction and conversion
VermontSale or transferfor a single family house, being constructed or transferred by sale or exchange; for condominiums, multiple unit dwellings and other residential buildings the duty is continuous
ConnecticutNew build onlya building permit for new occupancy issued on or after October 1, 2005 for a new one or two family residential building; the certificate of occupancy is withheld until the equipment is certified
FloridaNew build onlyconstructing a building or building an addition onto one
GeorgiaNew build onlybuilding a dwelling unit
IdahoNew build onlytaking out a building permit in a city or county that runs a building code enforcement program
KentuckyNew build onlyconstructing a single family dwelling, two family dwelling or townhouse
VirginiaNew build onlya building permit application for new construction submitted on or after the code's effective date
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Where the code says to put it

Nebraska writes the location into the code

Nebraska writes the spot into the code: on each habitable floor of the dwelling or dwelling unit, or in a location specified in any building code adopted by the state or the political subdivision. The rule reaches every storey, not only the sleeping floor.

The rule is quoted below in the code's own words. Nationally 20 states print one and 5 of those reach every storey rather than the sleeping floor alone, and no two of the 20 are quite the same sentence.

Where the code puts it

on each habitable floor of the dwelling or dwelling unit, or in a location specified in any building code adopted by the state or the political subdivision

The rule reaches every storey, not only the sleeping floor.

shall have a carbon monoxide alarm installed (1) on each habitable floor of each dwelling unit in a multifamily dwelling and on each habitable floor in a single-family dwelling or (2) in a location specified in any building code adopted by the state or by the political subdivision in which the dwelling is located.
Nebraska, read September 23, 2026. Read it at the source
In a rented home

What Nebraska puts on a landlord and what it puts on a tenant

Nebraska splits the job: the owner puts the alarm in and the tenant keeps it working. The owner installs on a change of tenant occupancy and replaces a missing or dead alarm between tenancies, and the tenant keeps, tests and maintains it during the tenancy.

The split matters because the two halves are enforced differently: an installation duty runs against the owner and a maintenance duty commonly runs against whoever is living there. Where the section names no party, the card says so rather than filling the silence with the commonest answer. 28 states of the fifty reach a tenancy at all.

In a rented home

  • Installsowner
  • Maintainstenant

the owner installs on a change of tenant occupancy and replaces a missing or dead alarm between tenancies, and the tenant keeps, tests and maintains it during the tenancy.

The owner of an existing single-family dwelling or existing dwelling unit in a multifamily dwelling that is used for rental purposes and that has a change in tenant occupancy on or after January 1, 2017, shall ensure that an operational carbon monoxide alarm is installed on each habitable floor of the dwelling or dwelling unit or in a location specified in any building code adopted by the state or by the political subdivision in which the dwelling or dwelling unit is located.
Nebraska, read September 23, 2026. Read it at the source
What counts as an alarm

Nebraska names the standard the alarm has to meet

Nebraska names listed by a nationally recognized, independent product-safety testing and certification laboratory as determined by the State Fire Marshal. A combination smoke and carbon monoxide alarm is accepted.

38 states of the fifty name a standard and 16 say in writing that a combination smoke and carbon monoxide alarm satisfies the requirement. Where a state named none, approval belongs to the code the building is inspected under, which is a local reading rather than a state one.

How Nebraska compares

The same question in the other forty nine

42 states require a carbon monoxide alarm in a home and 8 have no statewide section for one. Of the 42, 10 reach a home already lived in, 25 wait for a sale, a permit or a first build, and 28 reach a rented home.

The bar splits the fifty by what their section touches, and the table beneath it puts them in alphabetical order for finding a particular one. Neither order tracks how cold a state gets.

All fifty states, alphabetical. Reach is what the section speaks to: the dwelling itself, or an event happening to it.
StateReachRented homesPlacement ruleCitation
AlabamaPermit or new buildNoNoAla. Admin. Code r. 305-2-4-.09 (Residential Building Codes), adopted by the Alabama Energy and Residential Codes Board under Code of Ala. 1975, Sections 41-23-80 through 41-23-85
AlaskaEvery homeYesYesAlaska Stat. 18.70.095(a)
ArizonaNone statewideNoNoNo section
ArkansasPermit or new buildNoNo12 CAR pt. 15, Arkansas Fire Prevention Code, 2021 Edition, Volume III
CaliforniaEvery homeYesYesCal. Health & Safety Code 17926(a)
ColoradoSale or transferYesYesC.R.S. 38-45-102
ConnecticutNew build onlyNoNoConn. Gen. Stat. §29-292
DelawareRented onlyYesNo16 Del. C. 6602C
FloridaNew build onlyYesYesFla. Stat. 553.885
GeorgiaNew build onlyNoNoGeorgia State Amendments to the International Residential Code (2024 Edition), Section R311 Carbon Monoxide Alarms, revising Section R311.2.1, adopted by the Department of Community Affairs under the Uniform Codes Act, O.C.G.A. Section 8-2-20 et seq.
HawaiiPermit or new buildNoNoHaw. Rev. Stat. 107-25, with the code adopted under it
IdahoNew build onlyNoNoIdaho Code 39-4116(2)(b), with the code itself defined at 39-4109(1)(b)
IllinoisEvery homeYesYes430 ILCS 135/10
IndianaPermit or new buildNoNo675 IAC 14-4.4-27 (2020 Indiana Residential Code, amending Section R315.2.2 of the 2018 International Residential Code)
IowaEvery homeYesNoIowa Code 10A.518(3)(b)
KansasNone statewideNoNoNo section
KentuckyNew build onlyNoNo815 KAR 7:125, promulgated under KRS 198B.040(7) and 198B.050
LouisianaSale or transferYesNoLa. R.S. 40:1581
MaineSale or transferYesYes25 M.R.S. §2468
MarylandRented and newYesYesMd. Code, Public Safety § 12-1104
MassachusettsEvery homeYesNoM.G.L. c. 148, §26F1/2
MichiganPermit or new buildYesYesMCL 125.1504f (Stille-DeRossett-Hale Single State Construction Code Act, 1972 PA 230, Sec. 4f; the "Overbeck law")
MinnesotaEvery homeYesYesMinn. Stat. 299F.51, subd. 1 (a)
MississippiNone statewideNoNoSenate Bill 2378, 2014 Regular Session, Section 1
MissouriNone statewideNoNoNo section
MontanaRented onlyYesNoMont. Code Ann. 70-24-303(1)(g)
NebraskaSale or transferYesYesNeb. Rev. Stat. 76-604
NevadaNone statewideNoNoNo section
New HampshireRented and newYesNoRSA 153:10-a
New JerseySale or transferYesNoN.J.S.A. 52:27D-133.3
New MexicoPermit or new buildNoNo14.7.3 NMAC, 2021 New Mexico Residential Building Code
New YorkEvery homeYesNoN.Y. Exec. Law 378(5-a)
North CarolinaRented and newYesYesN.C. Gen. Stat. § 42-42(a)(7)
North DakotaNone statewideNoNoN.D. Admin. Code 45-18-01-04
OhioEvery homeYesYesOhio Adm.Code 1301:7-7-11 (Ohio Fire Code, Chapter 11), modifying International Fire Code Sections 1101.1 and 1103.9
OklahomaPermit or new buildNoNoOAC 748:20-6-1
OregonSale or transferYesYesOr. Rev. Stat. 105.838
PennsylvaniaRented onlyYesYesCarbon Monoxide Alarm Standards Act, Act of Dec. 18, 2013, P.L. 1229, No. 121, section 4
Rhode IslandSale or transferYesYesRhode Island Life Safety Code, 450-RICR-00-00-8, §24.6.3.1 (adopted under R.I. Gen. Laws §23-28.1-2)
South CarolinaPermit or new buildNoNoS.C. Code Regs. R.8-1200 (2021 International Residential Code as adopted), promulgated under S.C. Code Ann. Section 6-9-40 and Section 6-9-50
South DakotaNone statewideNoNoNo section
TennesseePermit or new buildNoNoTenn. Comp. R. & Regs. 0780-02-23-.02 (Adoption by Reference), Division of Fire Prevention, under T.C.A. Section 68-120-101(a), (b), and (d)
TexasPermit or new buildNoNoTex. Loc. Gov't Code 214.212
UtahPermit or new buildNoNoUtah Code 15A-2-103(1)(b)
VermontSale or transferYesYes9 V.S.A. §2882
VirginiaNew build onlyYesYes13VAC5-63-240 (Virginia Construction Code, Section 915 as amended), adopted under Va. Code § 36-99
WashingtonEvery homeYesYesWash. Rev. Code 19.27.530
West VirginiaRented and newYesYesW. Va. Code § 15A-10-12
WisconsinEvery homeYesYesWis. Stat. 101.647 (3) (a)
WyomingNone statewideNoNoNo section
A row of tall nineteenth century brick and frame houses on Queen City Avenue in the South Fairmount neighbourhood of Cincinnati, under a clear sky.
Housing this old is the whole question. Ohio is one of ten states whose carbon monoxide section attaches to the dwelling itself, so it reaches these houses as they stand. In most of the country the same section would wait for one of them to be sold, altered under permit or rebuilt. “Queen City Avenue, South Fairmount, Cincinnati, OH (28224745388)”, Warren LeMay, CC0

Nebraska carbon monoxide alarm questions

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Nebraska read September 23, 2026, off the state’s own published code: Neb. Rev. Stat. 76-604, as part of a reading of all fifty compiled September 23, 2026. Every quotation above is reproduced in the source’s own wording and links back to the document it was read from. Legislatures amend these between sessions, and a county or city building code can reach a building the state code does not, so the link beside a quote is what governs on the day. What Nebraska wrote is what this page carries: the duty, what it attaches to, where the code puts the alarm, what it says about a rented home, and the sentence it set.