Smoke alarms are a legal requirement in New South Wales and must be installed correctly and kept in working order. In NSW, this applies to homes, apartments, rental properties, relocatable homes, caravans, camper-vans and other residential buildings where people sleep.

As a minimum, there must be at least one working smoke alarm on every level of the home, even if there are no bedrooms on that level. Smoke alarms must comply with Australian Standard AS 3786, in line with Australian standard smoke alarms NSW requirements.

Below is a practical guide to what smoke alarm compliance means in NSW, where alarms should be installed, what rental properties need to account for, and which PSA products may suit different property types.

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What The New South Wales Legislation Requires

Here are the main smoke alarm regulations NSW homeowners and landlords should know:

Basic Requirements

  • Smoke alarms are required in residential buildings where people sleep.
  • At least one working smoke alarm must be installed on every level.
  • Smoke alarms must be installed so they can warn people in sleeping areas.
  • Smoke alarms must comply with Australian Standard AS 3786.

Rental Property Requirements

  • Landlords must ensure smoke alarms are working and cannot pass that responsibility to tenants through a tenancy agreement.
  • Faulty alarms must be repaired or replaced within 2 business days of the landlord or agent becoming aware of the issue.
  • Smoke alarms must be replaced within 10 years of manufacture, or earlier if required by the manufacturer.

New Homes & Building Work

  • Where more than one alarm is required, alarms will generally need to be interconnected.
  • In many cases, alarms will also need to be mains-powered where mains power is available.

Special Property Types

Caravans & Camper-Vans

At least one working smoke alarm is required inside the van where the bed is. If people sleep in the annex, an alarm is required there as well. These alarms must have a hush button.

Guest Houses & Boarding Houses

Class 1b buildings, including guest houses and boarding houses, must have a smoke alarm that is mains-powered or powered by a non-removable 10-year lithium battery.

Garages In Certain New Builds

In some attached private garages or garage-top dwellings, a heat alarm may be required. It should be installed on or near the ceiling, comply with AS 1603.3, be mains-powered, and be interconnected to the dwelling’s smoke alarms.

Note: This is a general guide only. Requirements can vary depending on the property’s age and layout, as well as whether it has been renovated or extended. If you are unsure, speak with a licensed electrician or fire safety professional.

Who It Applies To & When

NSW smoke alarm laws apply to owner-occupied homes, rental properties, apartments, relocatable homes, caravans, camper-vans, and other residential buildings where people sleep.

The timeframes are as follows:

A building where people sleep must have a smoke alarm installed on every level.

Require hard-wired smoke alarms, and major renovations requiring a permit must have at least one smoke alarm on each level connected to mains power.

Hard-wired or battery-operated alarms may be used, provided they comply with AS 3786. Where suitable, mains-powered or interconnected alarms can provide added protection.

For newer homes and relevant renovation or extension work, alarms generally need to be connected to 240V mains power and interconnected where more than one alarm is installed.

Where Smoke Alarms Must Be Installed In NSW

Smoke alarms should be installed so they provide early warning to people in sleeping areas. In practical terms:

  • Install at least one smoke alarm on every level of the home.
  • On levels with bedrooms, place alarms in hallways or circulation spaces near the bedrooms.
  • If bedrooms are in separate parts of the home, install alarms in each sleeping zone.
  • If there is no hallway, place the alarm between the bedroom area and the rest of the home.
  • Install alarms on or near the ceiling, with suitable clearances.

For better protection, it is also recommended to go beyond the minimum by installing extra alarms, including in bedrooms where appropriate.

Roles & Responsibilities

Rental Provider (Landlord / Agent)

  • Ensure smoke alarms are installed in the required locations.
  • Keep alarms in working order at all times.
  • Repair or replace faulty alarms within 2 business days.
  • Replace removable batteries when required.
  • Replace alarms within 10 years of manufacture, or earlier if required.
  • Use a licensed electrician for hard-wired alarm repairs or replacement.

Renter (Tenant)

  • Tell the landlord or agent if an alarm is not working.
  • In some cases, replace a removable battery after notifying the landlord.
  • Do not remove, disable, or tamper with smoke alarms.

A Quick Checklist (Smoke Alarm Compliance NSW)

  • Do you have at least one working smoke alarm on every level?
  • Are alarms installed near bedroom areas?
  • Do your alarms comply with AS 3786?
  • If the home is newer or has had building work done, do the alarms need to be mains-powered and interconnected?
  • If the property is rented, are the alarms being maintained in line with NSW tenancy rules?
  • Are batteries being replaced on time where applicable?
  • Have any alarms reached, or nearly reached, 10 years from the date of manufacture?

FAQ

In newer homes and some building work, smoke alarms generally need to be interconnected where more than one alarm is required. This means if one alarm sounds, the others will sound too.

Rental properties must have working smoke alarms in the required locations. Landlords must keep them in working order, repair or replace faulty alarms within 2 business days, replace removable batteries when needed, and replace alarms within 10 years of manufacture.

In many newer homes and some building work, smoke alarms generally need to be mains-powered where mains power is available. Existing homes can use other compliant options, depending on the property.

Older homes still need compliant, working smoke alarms in the correct locations. Depending on the property, suitable options may include replaceable battery, sealed 10-year battery, or hard-wired alarms.

In rental properties, landlords must check smoke alarms yearly, replace removable batteries when required, and replace alarms within 10 years of manufacture, or earlier if the manufacturer requires it. Regular testing and maintenance are also strongly recommended for owner-occupiers.

Commercial requirements vary depending on the building classification and may involve broader fire-detection or alarm-system obligations. For commercial compliance, speak with a building surveyor, fire safety consultant, or licensed contractor.

Follow the relevant NSW government guidance for more information on smoke alarm requirements in New South Wales.

How PSA Can Help

Make compliance easier with PSA’s range of smoke alarms and accessories, designed for a wide range of New South Wales property types.

Compliant Protection

Our photoelectric alarms meet AS 3786:2014 and can be interlinked, so if one activates, they all sound.

Options For Every Home

Choose between 240 V mains-powered alarms or wireless, sealed, 10-year battery-powered fire alarms, depending on your home’s needs.

Simple to Use/Install

Easy test, hush-and-locate functions, plus accessories that make neat installs possible (even on tricky ceilings).

Scales To Your Home

PSA systems are designed to interlink up to 24 alarms, so you can cover bedrooms, connecting hallways and each level as needed.

Clear Guidance, Local Help

Straightforward labelling, practical installation tips and friendly Australian support when you need it.

Browse All PSA Smoke Alarms

Hard-wired Smoke Alarms

Permanently connected to mains power with a battery backup for continuous protection. Required in NSW for newer homes and most building work where mains power is available, and must be installed by a licensed electrician.

LIF6800

  • Photoelectric smoke alarm
  • Complies with AS3786:2014
  • 240V with 9v Backup battery
  • Interconnectable with up to 24 other smoke alarms and ancillary products
  • Can use wireless base (LIF6000WB) and wireless module (LIF6000WIRM) for wireless solutions.
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LIF6800RL

  • Photoelectric smoke alarm
  • Complies with AS3786:2014
  • 240V with 10-year rechargeable lithium backup battery
  • Interconnectable with up to 24 other smoke alarms and ancillary products
  • Can use wireless base (LIF6000WB) and wireless module (LIF6000WIRM) for wireless solutions
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HG3000

  • Photoelectric smoke alarm
  • Complies with AS3786:2014
  • 240V with 9v Backup battery
  • Interconnectable with up to 24 other HG3000 smoke alarms.
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LIF5800ACF

  • Photoelectric Smoke alarm
  • Complies with AS3786:2014
  • 240V with Sealed 10 year battery
  • Flush mounting design
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Battery Powered Smoke Alarms

Sealed 10-year lithium battery alarms with no wiring required and no annual battery
changes. A practical choice for existing homes and older properties where hard-wiring is not required under NSW rules.

LIF6000DCW

  • Photoelectric smoke alarm.
  • Complies with AS3786:2014.
  • Sealed nonreplaceable 10-year lithium battery.
  • Interconnectable with up to 24 other wireless smoke alarm products.
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LIFPE10LP

  • Photoelectric Smoke alarm
  • Complies with AS386:2014
  • Sealed nonreplaceable 10-year lithium battery
  • Super flush award-winning design

 

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Heat Alarms

Triggers on rapid temperature rise rather than smoke, making it the right choice for kitchens, garages, and steamy or dusty areas. Also a legislative requirement for some NSW garages.

LIFHA240

  • Mains Powered heat detector designed to trigger at 57 degrees Celsius
  • 9VDC backup battery
  • Interconnectable with up to 24 other lifesaver smoke alarms and ancillary products

 

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Smoke Alarms For Caravans

Compact photoelectric alarms with a hush button, built for caravans and camper-vans. NSW law requires a working alarm wherever people sleep in a caravan, including the annex.

LIFPE10LP

  • Photoelectric Smoke alarm
  • Complies with AS386:2014
  • Sealed nonreplaceable 10-year lithium battery
  • Super flush award-winning design

 

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LIFPE9M

  • Photelectric smoke alarm
  • Complies with AS3786:2014
  • Replaceable 9V backup battery

 

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Wireless Control

Wireless controllers allow multiple alarms interconnect and sound together without the need for new cabling. A practical way to meet NSW interconnection requirements in older homes or mixed installations.

LIF6000DCW

  • Photoelectric smoke alarm.
  • Complies with AS3786:2014.
  • Sealed nonreplaceable 10-year lithium battery.
  • Interconnectable with up to 24 other wireless smoke alarm products.
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LIF6000WB

  • Allows LIF6800 and LIF6800RL smoke alarms to be wirelessly interconnected.
  • Powered by smoke alarm.
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LIF6000WIRM

  • Allows Lifesaver smoke alarms and other ancillary devices like heat alarms and carbon monoxide alarms to be wirelessly interconnected.
  • Powered by 240V mains.
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Controller

A wall-mount or handheld remote for testing, hushing, and locating alarms across a linked wireless network. Takes the hassle out of maintaining alarms on high ceilings or hard-to-reach installs.

LIF6000THL

Smoke alarms are usually installed on ceilings and when they require to be tested or silenced, reaching a smoke alarm on the ceiling can make this difficult. Wireless controllers allow you to remotely silence and test wireless smoke alarms.

 

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Other

Includes carbon monoxide alarms for homes with gas appliances, and additional accessories to complete your home safety setup.

LIFCO240

  • Mains powered carbon monoxide detector
  • Sealed lithium battery that will last the lifespan of the alarm (7 years)
  • Interconnectable with up to 24 other lifesaver smoke alarms and ancillary products.

 

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Get Compliant With PSA

Need one alarm or a complete interconnected setup for your home or rental property? PSA helps New South Wales households stay compliant and better protected. Shop online or contact our experts for practical advice.