Smoke alarms & safety in New South Wales
Key rules at a glance
| Alarm type | Alarms meeting AS 3786; photoelectric recommendedSource: Residential Tenancies Act 2010 (NSW) |
|---|---|
| Placement | At least one alarm on each storey, in hallways outside bedroomsSource: NSW Government |
| Power & age | Hard-wired in homes built or renovated after 1 May 2014; otherwise a 10-year lithium battery; replace within 10 years of manufactureSource: NSW Government |
| Landlord duty | Check and test every 12 months; replace a removed or flat battery; repair or replace a faulty alarm within 2 business days of notificationSource: Residential Tenancies Regulation (NSW) |
How it works in New South Wales
Since 23 March 2020, NSW landlords have had a defined duty to keep smoke alarms working: check them at least once every 12 months, replace batteries as needed, and act on a reported fault within two business days. Every storey must have at least one alarm meeting AS 3786, and homes built or substantially renovated after 1 May 2014 must have hard-wired, interconnected alarms. Photoelectric alarms are recommended. NSW also tightened water-efficiency standards landlords must meet before charging tenants for water.
NSW Fair TradingFrequently asked questions
How often must a NSW landlord check smoke alarms?▾
At least once every 12 months. A faulty alarm must be repaired or replaced within two business days of the landlord being notified, and a flat or removed battery replaced promptly.
Do NSW rentals need interconnected smoke alarms?▾
Homes built or substantially renovated after 1 May 2014 must have hard-wired, interconnected alarms. Older homes need at least one working alarm on each storey meeting AS 3786.
What type of smoke alarm is required in NSW?▾
Any alarm meeting Australian Standard AS 3786, though photoelectric alarms are recommended. Alarms must be replaced within 10 years of their manufacture date.
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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.