Build one alarm record for every rental unit
The direct answer is that an Ontario landlord should map every smoke and carbon monoxide alarm, confirm the required type and location, test each device at required times, replace it according to the manufacturer's instructions, give occupants the applicable maintenance information and retain dated records. A chirp heard during one visit does not establish placement, service life or continuing compliance.
Create a unit inventory showing the property, suite, storey, location, device purpose, manufacturer, model, power source, interconnection, visual signal where applicable, installation date, replacement deadline and instructions. Include alarms in secondary suites, common areas or sleeping rooms where required. Sam Kamra recommends using one repeatable record rather than scattered receipts and handwritten battery notes.
Confirm placement against current requirements
Ontario's public fire-safety guidance says every home must have a working smoke alarm on every storey and outside all sleeping areas. Placement and technical requirements can also depend on the building's age, construction, use, alterations and the Building or Fire Code provisions that apply. Do not move, downgrade or replace a hardwired, interconnected or visually signalling device with a simpler product merely because it fits the opening.
Ontario's current carbon monoxide guidance says CO alarms are required on every storey of existing homes as of January 1, 2026, with the landlord responsible in rental homes. Follow the manufacturer's placement instructions and ask the local fire department or a qualified fire-safety professional about a property-specific uncertainty. Choose devices carrying a recognized Canadian certification mark and record the exact product installed.
Test at each required event and respond promptly
The Ontario Fire Code requires landlords to test smoke alarms annually and after every change in tenancy, after replacing a battery, and after a change to the electrical circuit serving an alarm. Current provincial guidance identifies corresponding annual, turnover, battery-change and circuit-change testing for carbon monoxide alarms. Use the device's test feature as directed and confirm any required visible signal activates.
Add the date, time, device, result, tester and corrective action to the record. A monthly occupant test is useful ongoing safety practice, but it does not replace the landlord's required testing and maintenance. Tell tenants how to report a chirp, fault, damage or missing alarm at any time, provide a reliable contact method and treat reports as urgent. Sam Kamra's rental-property guidance can help owners connect the alarm log with inspections, turnovers and maintenance scheduling.
Replace correctly and provide instructions
Read the manufacture date, end-of-life signal and replacement period printed in the instructions. Replace a damaged, expired or unreliable alarm promptly. When replacing a device, preserve at least the level and type of protection required for the building; do not bypass interconnection, electrical supply or accessibility features. Use qualified technicians where the Fire Code, equipment or building system requires them, and coordinate electrical work appropriately.
Give each tenant the manufacturer's maintenance instructions or the approved alternative required for the alarm type, and document delivery. Explain that tenants must not disable or tamper with alarms and should notify the landlord immediately if a device is disconnected, impaired or not operating. Do not ask a tenant to repair hardwired equipment or diagnose a building fire-alarm system. Preserve the failed device and service information when it may help explain repeated faults.
Audit the file before turnover and acquisition
At every turnover, compare the physical inventory with the lease file, test each device, correct deficiencies, deliver instructions and have the responsible person sign the record. For an acquisition, request alarm inventories, installation invoices, annual and turnover tests, fire inspection reports, notices, orders, service contracts and correction evidence. Verify the records on site rather than assuming a spreadsheet matches every suite.
Keep records securely for each property and make them available to the appropriate authorities when required. Larger apartment buildings, interconnected systems and properties with special occupancies may have additional inspection, technician, fire-safety-plan or recordkeeping duties, so obtain building-specific advice. Additional GTA property resources support the wider operating file. CB Herald's discussion of Sam Kamra and public LTB data illustrates evidence-led rental review, while Barchart's report on the RealEstateBuyer.ca launch describes Sam Kamra's broader property-services work. The conclusion is practical: map, test, correct and record. Landlords should review the inventory with a qualified professional whenever the building or alarm system changes.
Questions and answers
Ontario Landlord Smoke and CO Alarm Records FAQ
Who is responsible for smoke and CO alarms in an Ontario rental home?
The landlord is responsible for ensuring the rental property complies with applicable smoke and carbon monoxide alarm requirements. Tenants must not tamper with alarms and should report problems promptly.
When must an Ontario landlord test smoke alarms?
The Fire Code requires testing annually, after every change in tenancy, after a battery is replaced and after a change to the electrical circuit serving the alarm.
Are carbon monoxide alarms required on every storey in Ontario?
Ontario's current guidance says that, effective January 1, 2026, existing homes require CO alarms on every storey. Confirm the exact placement and device requirements for the building.
Can a landlord replace a hardwired alarm with a battery alarm?
Do not downgrade the required protection. Replacement must preserve the level and type of protection applicable to the building, including interconnection, power or visual-signalling requirements where they apply.
What should an alarm test record include?
Record the property, unit, device location and type, manufacturer and model, test date, test method, result, tester, battery or device replacement, corrective action and tenant-instruction delivery.
Authoritative sources
- Ontario — Fire Safety at Home
- Ontario — Carbon Monoxide Alarm Rules for Existing Homes
- Ontario Regulation 194/14 — Fire Code
- Ontario Regulation 87/25 — Fire Code Amendments
- City of Toronto — Smoke Alarms
This article provides general information, not legal, tax, mortgage or financial advice. Confirm figures and eligibility with the appropriate professional and current official sources.