Smoke Alarm Installation Prices

Smoke alarm installation in Australia costs $80–$180 per alarm for a photoelectric supply and install, $450–$950 for a full interconnected system in a 3-bedroom home, and $400–$1,100 for a whole-house upgrade from old to new regulation compliance. Prices include GST.

Australian regulations require photoelectric (optical) smoke alarms in all residential properties. Ionisation alarms are no longer compliant for new installations. All alarms must be interconnected so that when one activates, all alarms in the home sound simultaneously.

Hardwired (240V) smoke alarms must be installed by a licensed electrician. Battery-powered and wireless interconnected smoke alarms can be installed by specialist smoke alarm companies or qualified persons, though requirements vary by state. Always confirm licensing requirements with your state's electrical safety authority.

Queensland required all rental properties to comply from 1 January 2022. Victoria requires compliance from new tenancy or sale. NSW, WA, SA, and other states have their own staged timelines. Check with your state's residential tenancy authority or fire authority for current compliance deadlines.

Under 2022 Australian regulations, you need a smoke alarm in every bedroom, in hallways outside sleeping areas, and on every storey of your home. A standard 3-bedroom single-storey home typically needs 4–5 alarms. Two-storey homes typically need 6–8 alarms. Some states have additional requirements.

Hardwired alarms are connected to the 240V mains power and interconnected via cable — more reliable but require an electrician to install. Wireless (RF) interconnected alarms communicate via radio signal, require no new wiring, and are ideal for retrofits in existing homes. Both types must be photoelectric and interconnected to comply with current Australian regulations.

A compliance package typically includes an inspection of all smoke alarms, replacement of any non-compliant alarms, a test of all alarms and interconnection, and a written compliance certificate. Rental property compliance packages from specialist providers cost $250–$600 and are a cost-effective way to ensure rental properties meet state requirements.

Carbon monoxide (CO) detectors are not currently required by law in most Australian states for standard residential properties, but they are strongly recommended in homes with gas appliances, open fireplaces, wood heaters, or attached garages. CO is odourless and can be fatal — a CO detector costs $100–$220 installed and can be integrated with your smoke alarm system.

Battery-powered smoke alarm replacement is generally permitted as a DIY task in Australia, provided you replace like-for-like with a compliant photoelectric alarm. Hardwired (240V) alarm replacement must be performed by a licensed electrician. For rental properties, professional installation and a compliance certificate is always recommended.

Australian Standards recommend replacing smoke alarms every 10 years. Modern 10-year sealed lithium battery photoelectric alarms are designed to last the full decade without battery replacement. Check the manufacture date on the back of each alarm — if it is more than 10 years old, it should be replaced.

Smoke alarm installation costs have risen approximately 25–27% since 2023, driven by electrician labour shortages, increased compliance demand from rental regulations, and higher alarm component costs. Prices are expected to stabilise in 2026–2027 as compliance deadlines pass for most property types.

Use a specialist smoke alarm compliance company rather than a general electrician for battery or wireless alarm installations — they typically charge less per alarm. Bundle multiple properties if you are a landlord. Choose wireless interconnected alarms to avoid electrician wiring costs. Book during winter when demand is lower. Compare at least two quotes for whole-house upgrades.

In most Australian states, non-compliant smoke alarms must be upgraded before settlement. The seller is responsible for ensuring the property meets current smoke alarm regulations. A smoke alarm compliance certificate is typically required as part of the contract of sale. Failure to comply can delay settlement or result in price negotiations.

Apartments and units must comply with the same state regulations as houses. However, body corporates and strata managers are typically responsible for common-area smoke alarms, while individual unit owners are responsible for alarms within their unit. In high-rise buildings (over 25 metres), additional fire safety systems including sprinklers may be required alongside smoke alarms.

Photoelectric alarms use a light beam to detect slow, smouldering fires and are required under current Australian regulations. Ionisation alarms use a small radioactive source to detect fast-flaming fires but are prone to false alarms from cooking. Ionisation alarms are no longer compliant for new installations in Australia. If your home still has ionisation alarms, they must be replaced with photoelectric models at the next compliance trigger.

Generally no. Wireless RF interconnected alarms from one manufacturer may not communicate with alarms from a different brand or older models. For a reliable interconnected system, all alarms should be the same brand and model. If you are upgrading, plan to replace all alarms at once rather than mixing old and new units.