Oregon Smoke Detector Requirements for Homes and Rentals

Oregon smoke detector requirements apply to every dwelling in the state, whether you own it, rent it out, live in it as a tenant, or are preparing to sell. Working alarms must be installed in each sleeping room, in the hallway or corridor giving access to those bedrooms, and on every additional story of the home. The power source, device features, and maintenance duties depend on when the home was built and who lives there, and the State Fire Marshal can impose civil penalties of up to $250 for violations.

Where Alarms Have to Go

Oregon Administrative Rules require a smoke alarm inside each sleeping room and in the corridor or area that provides access to those sleeping rooms.¹ If sleeping areas sit on an upper level, an additional alarm must be placed on the ceiling directly above the stairway leading to that level.

When bedrooms are on different floors or at opposite ends of the house, a single hallway alarm is not enough. An alarm must sit adjacent to each separated sleeping area so that no bedroom is out of earshot.¹ Most homes end up needing at least one alarm per bedroom, one in the hallway outside the bedrooms, and one on every additional story.

Manufactured homes follow the same placement logic. If a major renovation removes interior wall or ceiling finishes, the remodeled area has to be brought up to current placement standards.

Power Source and Battery Rules

What powers the alarm depends on the age of the home and whether it has been significantly remodeled. New construction requires hardwired alarms connected to the home’s electrical system, and those alarms must be interconnected so that when one sounds, they all sound.² Interconnection can be hardwired or wireless, though mixing brands risks compatibility problems.

Alterations that don’t remove interior wall or ceiling finishes allow battery-only alarms. Those units cannot take standard replaceable batteries. Oregon requires any standalone battery-powered alarm to run on a battery with at least a ten-year life, sold as “sealed” or “non-removable” lithium.² The rule exists to stop the familiar cycle of someone pulling a battery and never replacing it.

Landlords cannot downgrade a hardwired system to battery-only alarms. If the home originally had hardwired detectors, any replacement has to maintain that hardwired connection.

What Counts as a Compliant Alarm

Every smoke alarm sold or installed in Oregon must be listed by a nationally recognized testing laboratory accredited by the International Conference of Building Officials Evaluation Services or an equivalent body approved by the local authority.³ In practical terms, that means a UL or Intertek (ETL) marking on the device.

Ionization alarms carry an extra rule. Every ionization alarm sold in the state must include a “hush” mechanism that can silence it for up to 15 minutes.⁴ The hush button addresses burned-toast triggers without giving occupants a reason to yank the whole device off the ceiling.

Both ionization and photoelectric alarms are legal. Ionization alarms respond faster to fast-flaming fires, and photoelectric models catch smoldering fires earlier and produce fewer false alarms near kitchens and bathrooms. The State Fire Marshal recommends using both technologies, or dual-sensor units, for broader coverage. Manufacturers print an expiration date on each unit, and most alarms have a ten-year operational life.

Alarms for Hard-of-Hearing Occupants

Oregon law recognizes “smoke alarms for hearing impaired persons” as a separate device category that must be listed by a nationally recognized testing laboratory specifically for alerting people who are hard of hearing.³ These devices use strobe lights, bed shakers, or both instead of relying only on an audible tone. The law also covers “door knock alerting devices” for notifying a hard-of-hearing occupant when someone knocks on a sleeping room door. If a household member has a hearing impairment, standard alarms alone won’t satisfy Oregon’s safety requirements.

Landlord Duties in Rental Housing

Oregon puts the initial burden on the landlord. The owner of a rental dwelling, or the owner’s authorized agent, is responsible for supplying, installing, and maintaining all required smoke alarms. At the start of each tenancy, the landlord must give the tenant a written notice with instructions for testing the devices.⁵ That notice is a statutory requirement, triggered every time a new tenant moves in.

The landlord’s maintenance duty applies before the start of every new tenancy and during a tenancy whenever the tenant provides written notice of a problem other than a dead battery, which the tenant handles.⁵ Any replacement alarm must meet current standards, so an expired unit or one without a sealed ten-year battery cannot be reinstalled as a substitute.

Compliance is a habitability matter. ORS 479.270 explicitly ties smoke alarm maintenance to ORS 90.320, the state’s habitability statute.⁵ A landlord who ignores broken alarms isn’t only violating fire code; the tenant can pursue the same remedies available for other uninhabitable conditions.

Tenant Duties After Move-In

Once a tenant moves in, testing and battery duties shift. Oregon law requires tenants to test smoke alarms at intervals recommended by the manufacturer, but no less often than every six months. If a test reveals a problem, the tenant must immediately notify the landlord in writing. Tenants are also responsible for replacing dead batteries during the tenancy.⁶

Testing is simple: press and hold the test button until a series of loud beeps sounds. If the alarm stays silent or sounds weak, replace the battery first. If a new battery doesn’t fix it, notify the landlord in writing right away. That written notice matters. It triggers the landlord’s legal maintenance obligation and creates a paper trail if a dispute arises later.

Removing or tampering with a smoke alarm violates ORS 479.300 and can draw a civil fine of up to $250 imposed by the State Fire Marshal.⁵ Beyond the fine, disabling an alarm in a rental could create personal liability if a fire causes injury, and a landlord can treat it as a lease violation. When cooking or steam sets off the alarm, use the hush button rather than pulling the unit down.

Selling or Transferring a Home

You cannot sell a home in Oregon or transfer possession under a land sale contract without properly installed smoke alarms. ORS 479.260 prohibits the conveyance of any dwelling unit unless the required alarms are in place, installed per the state building code and State Fire Marshal rules.⁵ Alarms must also meet the ionization requirements in ORS 479.297 if ionization models are used. Manufactured dwellings are subject to the same rule.

A buyer who closes on a home lacking compliant alarms has a legal remedy. Under ORS 479.265, the buyer can sue to recover actual damages or $50, whichever is greater, and the court can award attorney fees to the prevailing party.⁵ The $50 floor is small, but the attorney fee provision gives the claim teeth. A seller who skips a $30 alarm installation could end up covering thousands in legal costs.

Carbon Monoxide Alarms When Selling

Oregon has separate carbon monoxide alarm rules that catch some sellers off guard. Under ORS 105.838, you cannot sell a one- or two-family dwelling or multifamily housing that contains a carbon monoxide source unless working CO alarms are installed at locations that provide detection for all sleeping areas.⁷

A “carbon monoxide source” means any fuel-burning heater, fireplace, appliance, or cooking device that produces CO as a byproduct, or an attached garage with an opening communicating directly with the living space.⁷ A gas furnace, wood-burning fireplace, or attached garage door into the house all trigger the requirement.

Homes built in 2011 or later require CO alarms regardless of whether a carbon monoxide source is present.⁸ The devices must be listed by Underwriters Laboratories or another nationally recognized testing laboratory and must conform to State Fire Marshal rules.

Penalties and How Enforcement Works

Oregon uses a complaint-driven enforcement system for rentals. If a rental lacks a working alarm and the landlord hasn’t fixed the problem within 10 days of the tenant’s written notice, the tenant can file a complaint with the State Fire Marshal or the local fire official.⁵ Even without a tenant complaint, the State Fire Marshal or a local fire official can initiate enforcement by giving the owner a written deficiency notice and at least 10 days to correct the problem.

Civil penalties follow a tiered schedule. A first violation draws a fine of up to $50, a second up to $100, and a third or subsequent violation up to $250.³ The statutory ceiling for any single civil penalty is $250.⁵ The real financial exposure lives elsewhere: habitability claims from tenants, buyer lawsuits under ORS 479.265, and possible complications with insurance coverage after a fire in a non-compliant home.

What Is and Isn’t Exempt

Oregon’s exemptions are narrower than most people assume. The statutes do not broadly exempt older homes, seasonal cabins, or historic buildings from having working smoke alarms. What exists is targeted relief from specific device requirements, not from having alarms at all.

Hotels equipped with sprinkler suppression systems may be exempted by State Fire Marshal rule from certain notification device requirements under ORS 479.257. The ionization-specific requirements in ORS 479.297, including the hush button mandate, do not apply to alarms designed for people who are hard of hearing, alarms sold in Oregon for shipment out of state, or alarms intended for recreational vehicles, commercial vehicles, aircraft, or marine vessels.⁴

Owners of older homes that haven’t gone through a renovation removing wall or ceiling finishes can use battery-powered alarms instead of hardwired ones. That is flexibility on the power source, not an exemption from having alarms. When in doubt about a specific property, check with the local building authority or the Oregon State Fire Marshal’s office.

1
Legal Information Institute. Oregon Admin Code 837-045-0050 – Installation and Location of Smoke Alarms and Smoke Detectors
2
City of Eugene. Smoke Alarm Requirements
3
Oregon Secretary of State Administrative Rules. Department of the State Fire Marshal – Chapter 837 – Division 45 – Smoke Alarms and Smoke Detectors
4
Oregon State Legislature. Oregon Revised Statutes 479.297 – Ionization Smoke Alarms
5
Oregon State Legislature. Oregon Revised Statutes Chapter 479
6
Oregon State Legislature. Oregon Revised Statutes 479.275 – Tenant of Rental Dwelling Unit to Test Smoke Alarm or Smoke Detector and Replace Dead Batteries
7
Oregon State Legislature. Oregon Revised Statutes Chapter 105 – Carbon Monoxide Alarms in Dwellings
8
Oregon State Fire Marshal. Smoke and Carbon Monoxide Alarms