Smoke alarms & safety in Western Australia
Key rules at a glance
| Alarm type | Mains-powered alarms meeting AS 3786; a 10-year non-removable battery alarm only where mains power is not practicableSource: Building Regulations 2012 (WA) |
|---|---|
| Placement | In corridors associated with bedrooms and on storeys without bedrooms; Class 1b also requires alarms in bedroomsSource: Building Code of Australia |
| Age & duty | Alarms must be no more than 10 years old; the landlord must keep them in working order and power-connectedSource: Residential Tenancies Act 1987 (WA) |
| Electrical safety | At least two RCD safety switches must protect all power and lighting circuitsSource: Electricity Regulations 1947 (WA) |
How it works in Western Australia
Western Australia requires hard-wired smoke alarms meeting AS 3786, with a 10-year sealed-battery alarm allowed only where mains power is not practicable. Alarms must be no more than 10 years old and are required when a property is sold, leased, or has its title transferred. The landlord must keep them in working order. WA also mandates at least two RCD safety switches protecting all power and lighting circuits, which must be in place before a lease or title transfer.
Building and Energy — Consumer Protection WAFrequently asked questions
What smoke alarms are required in WA rentals?▾
Mains-powered alarms meeting AS 3786, no more than 10 years old, in corridors and on every storey. A 10-year sealed-battery alarm is allowed only where mains power isn't practicable.
Are RCD safety switches required in WA rentals?▾
Yes. At least two RCD safety switches must protect all power and lighting circuits, and they must be installed before a property is leased or its title transferred.
When must WA smoke alarms be compliant?▾
Compliant alarms are required when a property is sold, leased, or has its title transferred. The landlord must then keep them working and power-connected.
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Last reviewed 9 June 2026
Figures reflect the 2025–26 financial year and tenancy laws in force as at mid-2026. State rules change often — always confirm the current figure with the linked authority before you rely on it.
This is general information for Australian landlords, not legal, financial, or tax advice. PropAlly is a software provider, not a law firm, accountant, or licensed adviser. Verify your obligations with the relevant state authority or a qualified professional.