Reviewed by Lee Gundenswager (Lead Electrician, Connex Lic #92217) and Darren Standring (Owner). Last updated July 2026.
⚡ The Quick Answer
Smoke alarm compliance in North Brisbane is priced at $120 per alarm. The number of alarms depends on your home — one in every bedroom, connecting hallway and on each level. Most homes need 4 to 8 alarms, so a typical full compliance job runs $500 to $1,000, including the alarms, installation, interconnection, testing and a compliance certificate. Larger homes are quoted on inspection. Most installs take 1–2 hours. Connex Electrical (Lic #92217) gives fixed pricing after a free assessment. Call 0474 207 609.
“How much does it cost to make my smoke alarms compliant?” is the question we get most often from homeowners preparing for the 1 January 2027 deadline. The honest answer is: it depends on how many alarms your home needs and whether you go hardwired or wireless — but the numbers are more predictable than most people expect.
This guide breaks down exactly what smoke alarm installation and compliance costs across North Brisbane, what’s included in the price, and where the costs can vary.
🔑 Key Takeaways
- Per alarm: $120, installed and interconnected.
- Most homes: 4 to 8 alarms, so typically $500 to $1,000 all up.
- Compliance certificate: included in every full installation.
- Price includes alarms, installation, interconnection, testing, and a compliance certificate.
- Hardwired and wireless options both comply — wireless is usually cheaper to retrofit.
Smoke Alarm Compliance Cost by Home Size
| Home | Typical Alarms | Typical Total (at $120/alarm) |
|---|---|---|
| Smaller home / unit | 4–5 | $480–$600 |
| Average home | 5–7 | $600–$840 |
| Larger / two-storey home | 7–8+ | $840–$1,000+ |
These are indicative starting prices. The exact figure depends on your alarm count, access, and whether any existing wiring can be reused. We confirm a fixed price after a free assessment — no surprises on the day.
What’s Included in the Price
- Supply of compliant photoelectric alarms (AS 3786:2014)
- Installation in every bedroom, connecting hallway, and on every level
- Interconnection (hardwired or wireless RF)
- Testing that every alarm sounds together
- A compliance certificate for buyers, tenants, or insurers
- Removal of your old, non-compliant alarms
Why the Price Varies
Number of alarms
This is the biggest factor. Every bedroom, every connecting hallway, and every level needs an alarm, so a 5-bedroom two-storey home simply needs more units than a 2-bedroom unit.
Hardwired vs wireless
Hardwired 240V alarms are the most reliable and ideal for new builds or renovations, but running cable through existing ceilings adds labour. Wireless interconnected alarms (10-year sealed lithium) avoid that and are usually the most cost-effective way to bring an existing home up to standard. Both fully comply. See our 2027 compliance guide for the difference.
Home age and access
Older homes in Kallangur, Petrie, and Lawnton sometimes need extra work if the wiring or switchboard is dated. If a switchboard upgrade is required to support hardwired alarms, we’ll flag it up front.
DIY vs Professional
You can legally fit battery-powered alarms yourself, but there are good reasons most people don’t for full compliance:
- Hardwired 240V alarms must be installed by a licensed electrician.
- Placement rules are strict — an alarm 50cm too close to a wall or vent can fail an inspection.
- Only a licensed electrician can issue the compliance certificate you need to sell or lease.
- Getting it wrong can void an insurance claim in a fire.
Is It Worth Doing Before the Deadline?
Yes. Upgrading now protects your family today, spreads you out ahead of the December 2026 booking rush, and means one less thing to scramble over if you decide to sell. Owner-occupied homes have until 1 January 2027, but rentals and homes being sold have needed compliant alarms since 2022.
Frequently Asked Questions
Is the compliance certificate included in the price?
Yes. Every full installation includes the compliance certificate. If your home is already compliant, we can simply inspect, test and certify it.
Do hardwired and wireless alarms cost the same?
Wireless is usually cheaper to retrofit in an existing home because there’s no cabling. Hardwired can cost more in labour but is the most reliable long-term option. We’ll recommend the best fit for your home.
How long does installation take?
Most homes are done in 1–2 hours.
Do you service my suburb?
We cover all of North Brisbane and Moreton Bay, including North Lakes, Mango Hill, Redcliffe, Burpengary, and Caboolture.
Want a fixed price for your home? Call Connex Electrical on 0474 207 609 for a free smoke alarm compliance assessment across North Brisbane.