A working smoke alarm in the right spot can give your family the minutes they need to escape a house fire. Get the placement wrong, and even the best alarm becomes background décor. Whether you’re a homeowner in Inglewood, a landlord in Bayswater or renovating in Mount Lawley, here’s a clear guide to where smoke alarms should be installed in your Perth home.
In Western Australia, the Building Regulations 2012 set out where and how smoke alarms must be installed. Compliant alarms are required in any home built or substantially renovated since July 1997, and before any property is sold, rented or hired out from October 2009 onwards.
The rules require:
DFES recommends photoelectric alarms across the board, since they detect smouldering fires earlier than ionisation models. In older homes around Bassendean and Mount Lawley, we still come across battery-only or expired units that should have been swapped out years ago.
Australian Standards and the National Construction Code spell out the minimum locations. Aim for these as a baseline, then add more for better coverage.
Install an alarm in the corridor or hallway directly outside every sleeping area. If your bedrooms are spread across different parts of the home, you’ll need an alarm for each cluster. We also recommend fitting one inside each bedroom. A closed door buys you time in a fire, but it also muffles a hallway alarm, so the in-room unit is often what actually wakes a heavy sleeper.
Living rooms and family rooms aren’t always required by law, but they’re where many house fires start, often from electrical faults, heaters or unattended appliances. A lot of the urgent callouts we attend trace back to these rooms, which is why an alarm in your main living space is one of the simplest upgrades you can make.
Every storey needs at least one smoke alarm, including levels without bedrooms. On a level with no bedrooms, place the alarm along the most likely escape path, typically near the top or bottom of the staircase. If you’d like a licensed Sparky to handle the installation across every level, our team can take care of smoke alarm installation across Perth and make sure each unit is interconnected and compliant.
Standard photoelectric alarms aren’t suitable for garages because of vehicle exhaust and dust. For these spaces, use specialised alarms designed under AS 1670. Granny flats and self-contained studios count as separate dwellings and need their own compliant setup, something we often retrofit when sleepouts get converted for tenants.
Even the right alarm in the right room can underperform if it’s mounted poorly. Follow these placement basics:
These distances aren’t fussy bureaucracy. Smoke pools in tight ceiling corners and stalls under air-con vents, enough to delay an alarm by minutes. We pick this up on a lot of compliance checks: units fitted, but in spots where they’ll do the least good.
Just as much as knowing where to put them, it pays to know where to keep them away from. Avoid:
Repeated false alarms are the main reason householders disable units, and a disabled alarm is no alarm at all. The classic case we see is an alarm fitted too close to an open-plan kitchen, then quietly disconnected after one too many burnt-toast triggers.
In WA, only a licensed electrician can legally install or replace hardwired smoke alarms. If your alarms are over 10 years old, beeping intermittently, missing from any required location or simply not interconnected, it’s time for an upgrade.
At Alby Electrical & Air, we install, replace and interconnect compliant photoelectric alarms across Perth’s eastern and northern suburbs, from Inglewood and Maylands through to Kalamunda. Get in touch with our team for a quick on-site assessment and a fixed quote, and let’s make sure your home meets WA standards before it really matters.
© 2026 Alby Electrical & Air. All Rights Reserved | Made with❤️by Exact Funnel