If you own a home in Queensland, there’s a date worth writing on the fridge: 1 January 2027. That’s when the smoke alarm laws that already cover rentals and homes being sold start applying to every house in the state, including the one you live in and never plan to sell.
For a lot of homeowners it means more than swapping a battery. Depending on the age and the layout of the house, you could be up for four or five new alarms, all talking to each other. It’s the sort of job the team at Southampton Electrical get asked about constantly, so here’s what the rules actually say, in plain English, and what your place is likely to need.
The short version
By 1 January 2027, every existing home in Queensland has to have interconnected photoelectric smoke alarms. Stripped right back, that means:
- One alarm in every bedroom
- One in any hallway that links the bedrooms to the rest of the house
- At least one on every storey, even a level with no bedrooms on it
- Every alarm photoelectric, not the older ionisation type
- All of them interconnected, so when one goes off, they all go off
The alarms also have to be either hardwired to the mains with a backup battery, or run on a sealed 10-year lithium battery. The old ones with a 9-volt battery you swap out each year no longer make the grade.
Why Queensland’s rules are the strictest in the country
Queensland has the toughest domestic smoke alarm laws in Australia, and there’s a hard reason for it. In 2011 a house fire at Slacks Creek, south of Brisbane, killed eleven people in a single home. It’s still the worst house fire for loss of life the country has seen.
After that, the state tightened the law and rolled it out over about ten years so households had time to catch up. New builds came first. Rentals and homes being sold followed. The 2027 deadline is the last stage, and it’s the one that finally captures ordinary owner-occupiers who haven’t sold, rented out or renovated.
The three dates that matter
The changes have come in three steps. Which one applied to you depended on what you were doing with the house:
- Since 1 January 2017: new builds and homes going through a major renovation needed interconnected photoelectric alarms.
- Since 1 January 2022: any home being sold or leased, including a lease renewal, had to comply before the sale or the tenancy started.
- From 1 January 2027: every home in Queensland has to comply, full stop, whether you sell it, rent it out or stay put for the next thirty years.
So if you’re a landlord or you’re selling, none of this is new. That deadline came and went a while ago. If you own your home and you’ve simply been living in it, 2027 is your line in the sand.
What actually counts as a compliant alarm
This is where people get caught out. An alarm can beep when you press the button and still fail, because working and compliant aren’t the same thing. Three things have to line up.
Photoelectric, not ionisation
Compliant alarms have to be photoelectric and marked to Australian Standard AS 3786:2014. Photoelectric alarms pick up the visible smoke off slow, smouldering fires, the kind that start in a lounge or a bedroom overnight and cause most house-fire deaths. Ionisation alarms are quicker on open flames but slow on smoulder, and they’re the ones that scream every time you cook. Queensland went photoelectric-only for exactly that reason. If you look at an old alarm and spot a small radioactive symbol or the word ionisation on it, it’s on the way out.
Interconnected, wired or wireless
Interconnected means every alarm in the house is linked, so if one senses smoke at the back of the house, the one in the front bedroom sounds too. That’s the whole point of it. You get woken wherever the fire starts, not only if it starts near you.
There are two ways to do the linking. Wired interconnection runs a cable between the alarms and suits new builds, or a house that’s being rewired anyway. Wireless links them by radio signal, which means an established home can usually be brought up to standard without pulling ceilings apart. For most existing Brisbane homes, wireless is the sensible answer.
Hardwired or a sealed 10-year battery
Every alarm has to be either hardwired to the mains with a backup battery, or fitted with a non-removable 10-year lithium battery. The old removable 9-volt units are out. There’s an age rule sitting on top of that too: an alarm more than ten years old isn’t compliant even if it still chirps, because the sensor inside wears out. And if your current alarms are hardwired, the replacements have to stay hardwired.
Where the alarms have to go
Getting the right alarms is half the job. Putting them in the right spots is the other half.
You need one in every bedroom, one in any hallway that connects the bedrooms to the rest of the house, and at least one on each storey, including a level with no bedrooms on it like a downstairs rumpus or a garage. That last one catches people with a two-storey place who’ve only ever had the single alarm upstairs.
Placement matters as well. Alarms go on the ceiling, kept clear of corners, light fittings and ceiling fans so they read the smoke properly, and kept away from the kitchen and bathroom so burnt toast and shower steam don’t set them off at six in the morning. A good sparky positions them so they cover the house without going off over nothing, which is usually the reason people pull the batteries out in the first place.
Renting it out, selling, or just living there
What you have to do depends on your situation.
If you rent a property out
Landlords already have to have compliant alarms in. On top of that, each alarm has to be tested and cleaned within 30 days before a new tenant moves in or a lease is renewed. That cost sits with the owner, not the tenant. The tenant only has to replace a flat removable battery during the lease and not muck about with the alarms.
If you’re selling
A home being sold has to be compliant before it changes hands, and you have to declare on the contract whether it has compliant alarms. Plenty of sellers get it done before they list, because a buyer who spots non-compliance will happily use it to knock money off the price.
If you own and live there
You’ve got until 1 January 2027. After that it’s simply the law for your home the same as everyone else’s. No sale, no new tenant, no trigger needed.
Why most homes aren’t compliant yet
Walk into an average Queensland home and you’ll usually find one or two standalone alarms stuck up in a hallway. Often ionisation. Often older than ten years. Never interconnected. Under the 2027 rules that same house often needs four or five new alarms wired or linked together.
That’s a bigger job than a battery change, but it’s not a big one. Because wireless interconnection skips the new cabling, a licensed electrician can generally supply, install, link, test and certify the whole lot in a single visit.
Is it worth doing before 2026?
There’s no prize for waiting. The cost is the same whether you sort it now or in eighteen months, and doing it early means the house is safer in the meantime, which is the actual reason the law exists.
The one practical thing worth knowing is this: the closer it gets to the deadline, the busier every electrician in the state gets. Leave it to December 2026 and you’ll be booking into the same queue as everyone else who left it too. No need to rush out tomorrow, but no reason to sit on it either.
Getting it sorted
If you want to know where your place stands, the quickest way is to have a licensed electrician walk the house, count the bedrooms and storeys, check what you’ve already got against the standard, and tell you plainly what’s needed. Hardwired alarms and the compliance paperwork are electrician’s work by law, so for most homes it isn’t really a DIY job anyway.
If you’re up on Brisbane’s northside or around the Moreton Bay area, a local licensed electrician can quote the whole job up front, so you know the number before anyone gets on a ladder.
This is general information to help you work out what your home needs, not legal advice. For the official detail, the Queensland Fire Department website sets out the current requirements, and a licensed electrician can confirm exactly what applies to your place.
Frequently asked questions
Does the 2027 deadline really apply to my own home?
Yes. From 1 January 2027 the interconnected photoelectric requirement covers every home in Queensland, including one you own, live in and never plan to sell or rent. Rentals and homes being sold have already had to comply since 2022.
Do my smoke alarms have to be hardwired?
They have to be either hardwired to the mains with a backup battery, or fitted with a non-removable 10-year lithium battery. Alarms running on a removable 9-volt battery no longer count. If your existing alarms are already hardwired, the new ones have to stay hardwired.
How many alarms will my home need?
One in each bedroom, one in any hallway connecting bedrooms to the rest of the house, and at least one on every storey. A typical single-storey three-bedroom home usually lands around four or five. A two-storey place needs more.
My alarms still work. Do I have to replace them?
Probably. Working isn’t the same as compliant. They also have to be photoelectric, under ten years old, and interconnected with every other alarm in the house. An old standalone ionisation alarm ticks none of those boxes, so it still needs replacing.
Can I install them myself?
Sealed 10-year battery alarms can be put up yourself. Hardwired alarms have to be installed by a licensed electrician by law, and the compliance certificate is their job too. Since most homes end up needing hardwired, interconnected alarms, it’s usually a sparky’s job start to finish.
What happens if I don’t comply?
Beyond the safety risk, non-compliance can cause grief with an insurance claim after a fire, and for anyone selling or leasing it’s a legal requirement with real consequences at the point of sale or a new tenancy. From 2027, every Queensland home is simply expected to meet the standard.