Safety · Perth
10-Year Smoke Alarms Perth — WA Law Explained
What WA legislation actually requires.
Overview
10-year smoke alarm installation across Perth — meet the WA Building Regulations for sale, lease and transfer with hardwired, interconnected, photoelectric alarms.
Since 1 May 2015, every residential property in WA being sold, transferred or let must have hardwired (240V), interconnected, photoelectric smoke alarms not more than 10 years old. The 10-year rule applies to the alarm body itself, regardless of battery type.
We replace expired alarms, retrofit interconnected systems into older homes (wireless interconnect avoids re-cabling), and provide the compliance certificate settlement agents need.
Battery-only and ionisation alarms no longer meet the standard — even if they're working. We swap them as part of the same call-out.
1 May 2015
law in force
Sale/Lease
trigger event
Photoelectric
required
$180
per alarm to swap
FAQs
Frequently asked.
Quick answers to what Perth clients ask most. Anything we haven't covered? Get in touch.
What does the WA 10-year law actually say?
Since 1 May 2015, every residential property in WA being sold, leased or transferred must have hardwired (240V), interconnected, photoelectric smoke alarms with a lifespan of no more than 10 years. The 10 years refers to the alarm body, not the battery.
Do I need to replace my alarms before selling?
Yes — if any alarm is older than 10 years, isn't hardwired, isn't interconnected, or is ionisation rather than photoelectric, it must be replaced before settlement. Settlement agents check.
Does this apply to a property I'm keeping for myself?
Not legally — the law only triggers on sale, lease or transfer. But strongly recommended regardless. We replace expired alarms across Perth for around $180–$240 each.
Brands We Specify
Next Steps
Talk to a senior engineer.
We'll meet you on site, listen to the brief, and quote a system designed for the way you actually live.
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Engineered to disappear.
Twelve years on Perth jobs, 500+ homes wired, and a 10-year workmanship warranty on every install. One small team — engineers, not generalists.