The Louisiana carbon monoxide detector law requires every one- or two-family dwelling to have at least one working CO detector with a long-life, sealed battery at the time it is sold or leased, regardless of whether the home has any fuel-burning appliances.1Justia Law. Louisiana Revised Statutes Title 40 RS 40-1581 – Smoke Detectors; Carbon Monoxide Detectors; One- or Two-Family Dwellings The rule took effect January 1, 2023 under Act 458 of the 2022 legislative session, and it reaches sellers, landlords, and anyone installing a whole-home standby generator.2Louisiana State Legislature. Act No. 458
Which Homes Are Covered
Louisiana Revised Statute 40:1581(B) applies to “all existing one- or two-family dwellings at the time of sale or lease.” A qualifying dwelling is a building with no more than two units, each occupied by a single family with no more than three outside roommates.3Louisiana State Fire Marshal’s Office. Guidance Notice – Act 458 Requirement
The duty is triggered by a transaction. Sell the home, lease it, or install a whole-home standby generator, and a working CO detector must be in place. An owner living in a home they aren’t selling or leasing is not required by this statute to install one, though local ordinances or an insurance policy may say otherwise. Properties used exclusively for commercial purposes and buildings with more than two dwelling units fall outside RS 40:1581, though separate fire code requirements may apply to them.
You don’t need a gas stove, furnace, or attached garage to fall under the baseline rule. Every qualifying dwelling needs at least one detector at sale or lease. What the presence of fuel-burning appliances, a generator, or an attached garage changes is how many detectors are required and where they go.
Where Detectors Go and What Type Counts
The statute calls for a “long-life, sealed battery” unit.1Justia Law. Louisiana Revised Statutes Title 40 RS 40-1581 – Smoke Detectors; Carbon Monoxide Detectors; One- or Two-Family Dwellings Sealed-battery detectors typically last about 10 years, and the battery cannot be replaced separately; when the unit expires, you swap the whole device. Combination smoke and CO detectors are allowed, so one device can satisfy both the smoke alarm and CO detector requirements. Newly constructed homes generally must use hardwired detectors with battery backups under the state residential building code, while existing homes can meet the rule with standalone sealed-battery units.
The Louisiana State Fire Marshal’s Office recommends putting a detector on every occupied level, particularly levels with fuel-burning appliances. Its placement guidance calls for detectors within 10 feet of each bedroom door, within 10 feet of any door leading to an attached garage, and inside any room located above an attached garage. Detectors should not be installed inside the garage itself.3Louisiana State Fire Marshal’s Office. Guidance Notice – Act 458 Requirement
Homes with a permanently mounted, whole-home standby generator face the strictest placement rules. A CO detector must be installed inside every bedroom and in the main living or common area. Generators can produce significant carbon monoxide even when they sit outdoors, and exhaust can migrate through walls and vents into living spaces.
A detached garage with no communicating opening to the home generally does not trigger the garage-related placement rules, since the concern is exhaust moving through a shared wall or doorway. Mounting heights vary by manufacturer, so read the manual before installing.
What Sellers Have to Do
If you are selling a one- or two-family home, an operable CO detector must be installed before closing.1Justia Law. Louisiana Revised Statutes Title 40 RS 40-1581 – Smoke Detectors; Carbon Monoxide Detectors; One- or Two-Family Dwellings The obligation lives in the statute itself. It does not depend on the buyer asking for it or a home inspector flagging it.
The same section of law requires an operable 10-year sealed lithium battery smoke detector at sale, so address both devices at once. A combination unit handles both. If the home has a whole-home generator, use the bedroom-and-common-area placement described above rather than the single-detector minimum.
What Landlords Have to Do
A rental unit must have a working CO detector before the tenant moves in.1Justia Law. Louisiana Revised Statutes Title 40 RS 40-1581 – Smoke Detectors; Carbon Monoxide Detectors; One- or Two-Family Dwellings The duty does not end there. Louisiana Civil Code Article 2691 requires a landlord to make the repairs necessary to keep the property fit for its intended use throughout the lease, and a dead or expired CO detector falls within that obligation.4Louisiana State Legislature. Louisiana Civil Code Article 2691 – Lessor’s Obligation for Repairs
Sealed-battery CO detectors have a finite sensor life, roughly 7 to 10 years. When the sensor expires, the unit typically beeps every 30 seconds or displays “ERR” or “END,” and no battery swap will silence it because the sensor itself is done. The unit has to be replaced. If a tenant reports an end-of-life alert, replacement is the landlord’s responsibility.
Day-to-day testing sits with the tenant. Pressing the test button on a regular basis, keeping the unit clear of obstructions, and reporting problems are reasonable tenant responsibilities. Tenants maintain; landlords replace.
Generator Installations
A professional installer adding a whole-home standby generator to a one- or two-family dwelling must include at least one operable CO detector with a long-life, sealed battery as part of the installation.1Justia Law. Louisiana Revised Statutes Title 40 RS 40-1581 – Smoke Detectors; Carbon Monoxide Detectors; One- or Two-Family Dwellings The Louisiana Uniform Construction Code Council also adopted a code amendment requiring CO alarms whenever a whole-home standby generator is installed, effective January 1, 2023.3Louisiana State Fire Marshal’s Office. Guidance Notice – Act 458 Requirement The placement standard here is the stricter one: a detector in each bedroom and in the main living area.
What Tenants Can Do When a Detector Is Missing
Start with a written demand. A letter sent by certified mail creates a paper trail, and it should ask the landlord to install or replace the detector within a specific timeframe. Louisiana Civil Code Article 2694 lets a tenant make necessary repairs and either deduct the cost from rent or demand immediate reimbursement, but only after the landlord fails to act within a reasonable time after receiving a demand.5Louisiana State Legislature. Louisiana Civil Code Article 2694 – Lessee’s Right to Make Repairs A sealed-battery CO detector runs roughly $20 to $40. Keep the receipt and a copy of your demand letter.
If a landlord’s failure to provide a working detector leads to carbon monoxide exposure and injury, Louisiana Civil Code Article 2315 provides the basis for a civil suit. That article says anyone whose fault causes damage to another must repair it, and recoverable damages can include medical bills, lost wages, and pain and suffering.6Louisiana State Legislature. Louisiana Civil Code Article 2315 – Liability for Acts Causing Damages
Local rules can add to state law. New Orleans requires CO alarms in all rental units under a local ordinance and has distributed free combination smoke and CO detectors to renters through its fire and health departments.7Louisiana Fair Housing Action Center. Healthy Homes Requires All Rental Units to Include Carbon Monoxide Alarms Check whether your parish or city runs a similar program.
Complaints about missing CO detectors can be filed with the Louisiana State Fire Marshal’s Office, which handles fire and life safety violations through an online complaint portal.8Louisiana Fire Marshal. Start New Complaint When an inspector confirms a violation, the owner gets a deadline to correct it.
Enforcement, Penalties, and Insurance
For new construction, local building officials verify CO detector compliance before issuing a certificate of occupancy. Enforcement in existing homes and rentals is less systematic and is largely complaint-driven, especially outside the larger cities. In places like New Orleans, housing and fire inspections in rentals happen more regularly, and some jurisdictions require landlords to certify safety compliance under a rental licensing or registration program.
Confirmed violations can bring fines, and repeated noncompliance can escalate to orders declaring a property uninhabitable until corrected, which may force tenant relocation at the landlord’s expense. Some municipalities layer on their own penalties. The larger exposure for a noncompliant landlord is usually civil liability under Article 2315 if a tenant is harmed.
One provision in the statute cuts in the property owner’s favor: under RS 40:1581(D), failing to comply with the CO detector requirement cannot be used as a basis to deny an insurance claim.1Justia Law. Louisiana Revised Statutes Title 40 RS 40-1581 – Smoke Detectors; Carbon Monoxide Detectors; One- or Two-Family Dwellings That is a consumer protection against insurers, not a pass on the underlying duty. The detector still has to be there. It just cannot be used by an insurer as grounds to walk away from a claim.