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Smoke Alarm Legislation

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WA Legislation
NT Legislation
QLD Legislation
NSW Legislation
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SA Legislation

Western Australia – Smoke Alarm Legislation

In Western Australia, mains powered smoke alarms are mandatory in residential properties to protect occupants from the risk of fire.

  • From 1 July 1997, mains-powered smoke alarms have been required in all new residential buildings and extensions.
  • From 1 October 2009, existing residential buildings must be fitted with mains-powered smoke alarms prior to being sold, rented or hired.

Where it is impractical to install hard-wired alarms—such as when there is no access to conceal wiring or no mains power—battery-powered smoke alarms with a non-removable 10-year lifespan are permitted.

To comply with current regulations, owners must ensure that smoke alarms:

  • Are installed in line with the Building Code of Australia (BCA) requirements applicable at the time of installation.
  • Comply with Australian Standard AS 3786, with all alarms installed after 1 May 2017 required to meet the 2014 edition.
  • Are in working condition and less than 10 years old at the time of sale, rental, or hire.
  • Are permanently connected to mains power, unless a compliant battery-only model is justified.
  • Are interconnected if multiple alarms are installed in dwellings approved after 1 May 2015.

 

Installation Requirements

For single-level homes:

  • Install alarms on or near the ceiling:
  • In every hallway leading to a bedroom
  • Where no hallway exists, in an area near the bedrooms

For multi-level homes:

  • On each level that includes bedrooms (same as above)
  • On all other levels — even those with only laundries, bathrooms, or car parks — ideally along the main path of exit (e.g. stairways)

For small guest and boarding houses (fewer than 12 residents):

  • Install smoke alarms:
    • In every bedroom
    • In each associated hallway or adjacent area
    • On every level of the building
  • Additionally, an evacuation lighting system must be installed, activated by the smoke alarm. This may include:
    • A light built into the smoke alarm
    • Separate lighting installed in the area it serves

Northern Territory – Smoke Alarm Legislation

In the Northern Territory, approved smoke alarms must be installed in all residential premises and movable dwellings, including caravans.

  • Smoke alarms must be tested at least once every 12 months by homeowners or tenants.
  • Tenants are responsible for advising the property owner or agent if an alarm is not working.
  • Property managers or other authorised persons may test, maintain, or replace alarms on behalf of the owner.

An approved smoke alarm is a photoelectric type that is either:

  • Hardwired to mains power and installed by a licensed electrician
  • Or powered by a sealed lithium battery with a 10-year life, installed according to manufacturer’s instructions

 

Buying, Selling or Leasing a Property

  • Approved photoelectric smoke alarms must be installed before selling or leasing a property.
  • Tenants are responsible for keeping smoke alarms in working order.

 

Homes Built Before and After 7 January 1998

  • Homes built before 7 January 1998 without existing smoke alarms must have an approved photoelectric smoke alarm installed.
  • Homes built after 7 January 1998 should already be fitted with hardwired smoke alarms.
  • Non-approved or ionisation alarms do not need to be replaced unless:
    • The alarm stops functioning
    • The property is sold, rented, or re-leased
    • A hire agreement is entered into, renewed, or extended

 

Smoke Alarms in Public Housing

  • Public housing is fitted with sealed units with a 10-year battery life.
  • When these alarms expire, they will be replaced by the Department of Housing.

 

Installation Requirements

Where to install smoke alarms:

  • Between bedroom areas and the rest of the home
  • Inside any bedroom where someone sleeps with the door closed
  • On or near the ceiling, avoiding:
    • Cathedral ceiling peaks
    • Wall-ceiling corners
    • Spaces between exposed beams
  • If ceiling mounting isn’t practical, install on a wall 300–500mm below ceiling height
  • In cathedral ceilings, install between 500–1500mm below the highest point

For multi-level homes:

  • Install alarms in stairwells connecting each level
  • For homes with a common hallway, install alarms:
    • Between kitchens and living areas
    • In the hallway connecting bedrooms
    • Inside any bedroom with the door typically closed

 

Interconnection Requirement

From 1 May 2014, all new or significantly renovated homes must have interconnected smoke alarms where more than one is installed, in accordance with the National Construction Code.

New South Wales – Smoke Alarm Legislation

Under NSW law, all buildings where people sleep must have at least one working smoke alarm installed on every level. This includes homes, rentals, relocatable dwellings, caravans, campervans, and short-term holiday accommodation.

  • Requirements are set by the Environmental Planning and Assessment Act 1979 and Regulation 2000.
  • These rules have been in effect since 1 May 2006.
  • All smoke alarms must comply with Australian Standard AS3786:2014.


For Homeowners

  • You must install smoke alarms on every level of your home.
  • Alarms must be located:
    • In each hallway outside bedrooms
    • Where no hallway exists, between bedrooms and the rest of the home
    • On levels without bedrooms


For Tenants

  • Landlords are responsible for installing working smoke alarms on every level.
  • Tenants must replace batteries in battery-operated alarms as needed, unless physically unable to do so (in which case they must notify the landlord).
  • Tenants are not responsible for replacing backup batteries in hardwired alarms.


For Landlords

  • Must install smoke alarms and ensure they are functional at the start of a tenancy.
  • Provide at least 2 days’ notice before accessing the property to install or test alarms.
  • If the alarm uses a replaceable battery, a new battery must be installed at the start of each tenancy.
  • Include smoke alarm status in the tenancy agreement’s condition report.
  • Responsible for public holiday accommodation as well as boarding houses and backpacker premises.


For Caravans and Motorhomes

  • Must have at least one working smoke alarm inside the sleeping area and in the annex if used for sleeping.
  • Alarms must:
    • Comply with AS3786
    • Include a “hush” button to silence the alarm for 10 minutes
    • Be powered by mains electricity or a non-removable 10-year battery


Short-Term Rental Accommodation

  • Install alarms:
    • In every corridor or hallway connected to a bedroom
    • If no hallway exists, between the bedrooms and the remainder of the dwelling
    • On every other storey of the building
  • Alarms must be:
    • Installed on or near the ceiling
    • Powered by mains electricity or a non-removable battery with at least 10-year life
    • Interconnected, if more than one is installed


Heat Alarms in Private Garages

  • Homes with attached private garages that are not physically connected to the dwelling require heat alarms instead of smoke alarms.
  • Heat alarms must:
    • Be a Class Type A1 or A2 device compliant with AS1603.3
    • Be installed on or near the ceiling
    • Be powered by mains electricity or a non-removable 10-year battery
    • Be interconnected with other alarms in the home

Queensland – Smoke Alarm Legislation

Queensland has some of Australia’s most detailed smoke alarm regulations. Since 1 January 2017, strict laws apply to all types of dwellings, requiring the use of photoelectric, interconnected smoke alarms that comply with Australian Standard AS3786:2014.

 

Existing Dwellings

  • From 1 January 2017:
    • Any replacement smoke alarm must be photoelectric (AS3786:2014).
    • Smoke alarms older than 10 years must be replaced (check manufacture date).
    • Non-functional alarms must be replaced immediately.
    • Existing hardwired alarms must be replaced with hardwired models.
  • From 1 January 2027:
    • All homes must have smoke alarms that:
    • Are photoelectric and AS3786:2014 compliant
    • Do not contain ionisation sensors
    • Are less than 10 years old
    • Operate when tested
    • Are interconnected (all alarms activate together)

Smoke alarms must be installed:

  • On each storey
  • In each bedroom
  • In hallways connecting bedrooms to the rest of the dwelling
  • If no hallway, between bedrooms and other areas
  • If no bedrooms, in the most likely path of exit

Smoke alarms must be:

  • Hardwired to mains power with backup battery, or
  • Powered by a non-removable 10-year battery

 

Selling, Leasing, or Renewing a Lease

  • From 1 January 2022:
    • All homes being sold, leased, or renewed must comply with the above smoke alarm requirements.
    • Sellers must submit a Form 24 to confirm compliance.

 

New Builds and Renovations

For development applications submitted from 1 January 2017:

  • Smoke alarms must:
    • Be photoelectric (AS3786:2014)
    • Not contain ionisation sensors
    • Be hardwired to mains with backup battery
    • Be interconnected
  • Install on each storey:
    • In every bedroom
    • In hallways connecting bedrooms
    • Between bedrooms and other areas (if no hallway)
    • In the main exit path (if no bedrooms on that level)

 

Maintenance Requirements

  • Test smoke alarms regularly to ensure correct operation
  • Vacuum or dust alarms to avoid false triggers
  • Do not disable sounding alarms—this is illegal
  • Fire services will not silence alarms in unattended homes

 

Caravans and Motorhomes

  • From 1 July 2024: All newly registered or transferred caravans and motorhomes must have a photoelectric smoke alarm
  • From 1 July 2027: All existing registered caravans and motorhomes must comply
  • Alarms must:
    • Be photoelectric
    • Be powered by a non-removable 10-year battery
    • Be installed on the ceiling of the van
    • Include an alarm in annexes used for sleeping

Australian Capital Territory – Smoke Alarm Legislation

In the ACT, all residential homes are required by law to have smoke alarms installed on every floor. These alarms must comply with Australian Standard AS3786:2014. Over time, updated building codes have introduced stricter requirements for both new and existing homes.


Homes Built Before 1 August 1997

  • Owners may install either hardwired or battery-operated smoke alarms.
  • Battery alarms should use a sealed 10-year lithium battery and be interconnected where possible for improved safety.


Homes Built After 1 August 1997

  • Must have hardwired 240V smoke alarms installed.
  • Major renovations requiring a permit must include at least one smoke alarm on each level of the home.
  • If multiple alarms are installed, they must be interconnected.


From 1 May 2014

  • Newly constructed homes or those undergoing substantial extensions must install interconnected mains-powered smoke alarms.


Rental Properties

  • From 1 August 2017: Landlords must ensure smoke alarms are installed and working before a new tenancy agreement begins.
  • From 24 August 2018: All leased homes must have alarms that comply with AS3786:2014.


Tenant Responsibilities

  • Tenants are responsible for replacing batteries when required.
  • Smoke alarms must be tested annually in line with ACT Fire & Rescue guidelines.

Victoria – Smoke Alarm Legislation

In Victoria, smoke alarms are legally required on every level of all residential homes, including houses, units, flats and townhouses.

  • Since 1 August 1997, all homes must have smoke alarms installed that comply with Australian Standard AS3786.
  • Homes built or substantially renovated after 1 May 2014 must have interconnected smoke alarms installed throughout.

 

Home Requirements by Construction Date

Homes constructed before 1 August 1997:

  • Must have battery-powered smoke alarms installed.

Homes constructed after 1 August 1997 or with major renovations:

  • Must have hardwired smoke alarms connected to 240V mains power.
  • Alarms must include a back-up battery.

Homes constructed or renovated after 1 May 2014:

  • Where more than one alarm is required, all alarms must be interconnected — when one sounds, all sound.

 

Rental Providers

Rental providers (landlords) are legally responsible for ensuring smoke alarms:

  • Are correctly installed and fully functional.
  • Are tested annually according to manufacturer instructions.
  • Have batteries replaced as required.
  • Are repaired or replaced as urgent repairs if faulty.

Before a new rental agreement begins, renters must be provided with written information on:

  • How each smoke alarm operates.
  • How to test the alarms properly.
  • The renter’s obligation not to tamper with alarms and to report faults promptly.

 

Caravan and Motorhome Legislation

From 1 July 2024, all registered caravans and motorhomes must have a photoelectric smoke alarm installed.

  • Alarm must be powered by a 10-year non-removable battery.
  • Install on the ceiling of the caravan.
  • If an annex is used for sleeping, it must also have a smoke alarm installed.

For more information, visit Fire Rescue Victoria.

Tasmania – Smoke Alarm Legislation

In Tasmania, all residential properties are required to have compliant smoke alarms to ensure occupant safety in the event of a fire.

  • Since 1 August 1997, new residential buildings and those undergoing major renovations (requiring a permit) must have at least one smoke alarm per level, connected to the mains power and equipped with a battery backup.
  • From 1 May 2014, all new builds and major renovations must install interconnected smoke alarms, so that if one activates, all alarms sound simultaneously.
  • Smoke alarms must comply with Australian Standard AS3786:2014.

 

Rental Property Requirements (from 1 May 2019)

  • Rental providers (landlords) must ensure:
    • Smoke alarms are installed on every level of the dwelling
    • Alarms are mains powered where practical
    • If mains wiring isn’t feasible, alarms with fixed 10-year non-removable batteries may be used
    • All alarms meet AS3786:2014 standards
    • Maintenance is performed regularly and alarms are replaced every 10 years
    • Any faulty alarms are replaced promptly upon tenant notification

 

Tenant Responsibilities

  • Test smoke alarms at least every six months
  • Keep alarms clean and dust-free
  • Immediately notify the landlord if a smoke alarm malfunctions
  • Must not tamper with or remove smoke alarms

 

Installation Notes

  • Smoke alarms must be installed on or near the ceiling
  • Recommended locations follow the National Construction Code (NCC)

South Australia – Smoke Alarm Legislation

In South Australia, all residential properties are required by law to have at least one working smoke alarm installed. Homeowners and residential landlords are responsible for ensuring alarms are properly installed and maintained in accordance with the property’s age and ownership status.

 

Requirements by Property Age and Ownership

  • Built after 1 January 1995: Must have smoke alarms that are hardwired to 240V mains power and include a battery backup, as per the Building Code of Australia.
  • Purchased before 1 February 1998: At minimum, a replaceable battery-powered smoke alarm is required.
  • Purchased on or after 1 February 1998: Buyers have 6 months from title transfer to install compliant smoke alarms that are either:
    • Hardwired to mains power (240V), or
    • Fitted with a 10-year life, non-removable, permanently connected battery.

 

Interconnection Requirements

  • From 1 May 2014: All new dwellings must have interconnected smoke alarms—when one activates, all alarms sound.
  • Extensions or additions approved after 1 May 2014: Any added alarms must also be interconnected. However, interconnection with existing alarms in the original building is not required unless further extensions are added after that date.

 

Alarm Placement

Smoke alarms should be installed in locations that will provide occupants with sufficient warning during sleep. Multiple alarms may be required depending on the size and layout of the home to ensure adequate coverage across all sleeping areas and exit paths.