Perth homes, rentals and property sales · EC14280
Smoke Alarm Installation, Replacement & RCD Safety Switches Perth
Licensed help for faulty alarms, tripping RCDs, property sales and rentals
An expired or chirping smoke alarm, an RCD that will not reset, or an upcoming settlement or tenant move-in can all require prompt attention.
Neighbourhood Electrical & Air installs, replaces, assesses and tests mains-powered smoke alarms and RCD safety switches across Perth.
We help homeowners, landlords, property managers, sellers and buyers with:
- Expired or faulty smoke alarm replacement
- New mains-powered smoke alarm installation
- Smoke alarm positioning and interconnection
- Chirping and nuisance-alarm investigation
- RCD testing, installation and replacement
- Repeated RCD tripping and electrical fault finding
- Smoke alarm and RCD checks before a property sale or tenancy
- Switchboard assessment where existing RCD protection is inadequate
Electrical work is completed by our own qualified team under WA Electrical Contractor Licence EC14280.
Need help with a smoke alarm or safety switch?

Want a faster quote?
Send us:
- Photos of each smoke alarm, including the model and date label
- A clear photo of the full switchboard
- Your Perth suburb
- Whether the property is being sold, rented or renovated
- Your settlement, inspection or tenant move-in date
Straightforward replacements can often be quoted from clear photos and a description. If diagnosis or an onsite assessment is required, we will explain any attendance fee before booking.
Send photos for a faster quoteRecognise the warning signs
When should you book an electrician?
Smoke alarm concerns
Arrange an assessment if:
- An alarm is approaching or has passed ten years from manufacture
- The manufacture or replacement date cannot be read
- It chirps repeatedly after the backup battery has been checked
- It does not sound when the test button is pressed
- Its mains-power indicator is off when the model should display one
- It has been painted over, damaged, removed or disconnected
- It frequently activates during normal cooking or showering
- You are unsure whether alarms are installed in the correct locations
- Several alarms are installed but do not sound together
- You are preparing a property for sale, rent or short-stay accommodation
RCD safety switch concerns
Book an electrician if:
- The RCD test button does not make the switch trip
- The RCD trips but cannot be reset
- It resets and immediately trips again
- You appear to have fewer than two RCDs in a property being sold or rented
- You cannot tell which circuits each RCD protects
- Lights or power points may not be RCD-protected
- The switchboard contains old fuses, damaged components or unclear labels
- An agent, inspector or settlement representative has raised a concern
- You are renovating, adding circuits or upgrading the switchboard
Mains-powered alarm work
Smoke alarm services
Hardwired smoke alarm replacement
We replace expired, damaged, unreliable and non-operational mains-powered smoke alarms.
Before installing a replacement, we check the existing:
- Alarm type
- Mounting arrangement
- Backup power
- Interconnection method
This matters because a replacement needs to suit the existing system. An incompatible alarm may not operate correctly with other interconnected alarms.
New smoke alarm installation
If a required alarm is missing or poorly located, we can assess the property and quote for the new alarm position, cabling and interconnection.
The scope can depend on:
- Ceiling construction
- Roof access
- Existing wiring
- Number of storeys
- The number of alarms required
Chirping and nuisance-alarm investigation
A chirping smoke alarm may indicate:
- A low replaceable backup battery
- A depleted sealed backup battery
- Loss of mains power
- Dust or insects inside the alarm
- An alarm at the end of its service life
- A fault within an interconnected system
Steam, cooking particles, airflow and poor positioning can also cause nuisance activation.
We assess the likely cause rather than assuming every troublesome alarm simply needs replacing.
Smoke alarm checks for property sales and rentals
We can assess the:
- Age
- Operation
- Power supply
- Position
- Interconnection
of existing smoke alarms against the requirements relevant to the property.
This is particularly useful before settlement, advertising a rental, a new tenancy, short-stay use or renovation.
Protection, testing and diagnosis
RCD safety switch services
An RCD (also called a safety switch) is designed to disconnect the electricity supply quickly when it detects current leaking along an unintended path.
This is different from an ordinary circuit breaker or fuse, which primarily protects wiring against overloads and short circuits.
An RCBO combines residual-current protection with overload and short-circuit protection in one device.

RCD testing
We identify the installed RCDs, determine which circuits they appear to protect and test their operation.
A homeowner test-button check is useful for routine maintenance. Where appropriate, an electrician can also carry out instrument testing to investigate operating performance, circuit coverage or suspected faults.
RCD installation and replacement
We install RCDs or RCBOs where additional protection is required or an existing device is defective.
The appropriate arrangement depends on factors including:
- Switchboard design and available space
- Number and type of final subcircuits
- Existing circuit breakers and fuses
- Circuit loading
- Condition of the switchboard and wiring
- Whether the work forms part of a broader switchboard upgrade
Counting the switches in a switchboard is not enough to confirm whether the property has appropriate protection. The devices and the circuits they protect need to be identified.
RCD tripping and electrical fault finding
When an RCD repeatedly trips, we work through the affected circuit to isolate the likely cause.
Testing may include connected appliances, fixed equipment, outdoor power points, moisture-affected fittings and fixed wiring.
Where the switchboard needs more extensive work, we will explain whether targeted RCD work or a complete Switchboard Upgrade is the more practical option.
For Perth property owners and managers
WA smoke alarm requirements in plain English
For homes being sold, rented or hired in Western Australia, smoke alarms generally need to be:
- Operational
- No more than ten years old
- Not past any marked expiry date
- Permanently connected to mains electricity
- Compliant with the building requirements that applied when they were installed
In a typical detached home, alarms are generally required:
- In corridors associated with bedrooms
- Between bedrooms and the rest of the home where there is no corridor
- On every storey, including storeys without bedrooms
Apartments and other building classifications can have different requirements, so the layout should be assessed for the particular property.
Do multiple smoke alarms need to be interconnected?
Where more than one alarm is required, interconnection is generally required.
An exception applies to dwellings built under a building permit application made before 1 May 2015. Building work or other approval conditions can still affect what applies to a particular property.
Can I replace a hardwired smoke alarm myself?
You can perform ordinary user maintenance described by the manufacturer, such as:
- Pressing the test button
- Cleaning around the alarm
- Replacing an accessible backup battery
Connecting, disconnecting or altering a mains-powered smoke alarm involves fixed wiring and must be completed by a licensed electrical contractor in WA.
Are battery-only alarms allowed?
A standalone battery alarm is not normally a substitute for a required mains-powered alarm in a property being sold or rented.
Limited exceptions can apply where mains wiring cannot reasonably be run or there is no suitable location for a mains-powered alarm. Local government approval may also be required in some circumstances.
Where an exception applies, the alarm generally needs a non-removable ten-year battery rather than a replaceable 9-volt battery.
What type of smoke alarm should be installed?
Compliant alarms can use different sensing technologies, but the Department of Fire and Emergency Services recommends photoelectric smoke alarms for homes.
Product selection also needs to consider:
- AS 3786 compliance
- Compatibility with existing interconnected alarms
- Mains and backup power arrangements
- Mounting conditions
- The environment in which the alarm will operate
Existing and new homes
WA RCD requirements for property sales and rentals
For an existing residential property being sold, rented or offered for hire in WA, at least two RCDs are generally required to protect the final subcircuits supplying socket outlets and lighting.
The relevant existing-home arrangements also address how circuits are divided:
- No more than three final subcircuits should be protected by one RCD
- Where there are two or more lighting circuits, they should not all depend on the same RCD
This reduces the chance of a single fault disconnecting all lighting or all protected circuits at once.
For new residential electrical installations, requirements are broader. Since 1 January 2019, new residential installations have generally required RCD protection on all final subcircuits, including circuits supplying hardwired equipment.
That does not automatically mean every older home needs to be completely rewired. Additions, alterations and new circuits need to be assessed against the requirements applying to that work.
The number of RCDs needed at a particular property can therefore be greater than two.
Plan ahead of access and settlement
Selling or renting a property? Book before the deadline
It is better to address smoke alarm and RCD issues before final inspection, settlement or a tenant's move-in date.
Early assessment gives time to resolve problems such as:
- Expired alarms that cannot be directly matched
- Incompatible interconnected alarms
- Missing mains supply at a required alarm position
- Insufficient RCD protection
- An overcrowded or deteriorated switchboard
- Unidentified circuits
- Restricted roof or switchboard access
- Strata or building-manager access
- Additional work discovered during testing
From enquiry to handover
What happens during the service?
Tell us what prompted the enquiry
Let us know whether the issue involves:
- A faulty device
- An upcoming settlement
- A new tenancy
- A failed inspection
- A general electrical safety concern
Send photos where possible. They can often help us identify the likely scope before attending.
We explain the likely work and pricing approach
Straightforward replacements may be quoted from clear photos.
If onsite diagnosis or an inspection is needed, we explain any attendance or assessment fee before the booking is confirmed.
A licensed electrician attends
We inspect the relevant devices and isolate circuits where necessary.
If we find an issue outside the agreed scope, we explain the reason, options and cost before carrying out additional work.
Some jobs require a short power interruption. We will let you know before switching off the supply.
We complete the work, test it and explain the result
After the agreed work is completed, we explain as relevant:
- What was installed or replaced
- Which circuits are protected
- How to carry out routine tests
- When smoke alarms will next require replacement
- Any further work worth considering
- What documentation applies to the completed work
Scope before price
How much do smoke alarm and RCD services cost?
The cost depends on whether the job involves a direct replacement, new installation, diagnosis or switchboard alteration.
Smoke alarm cost factors
Pricing can vary with:
- Number of alarms
- Direct replacement versus a new position
- Alarm type and interconnection compatibility
- Backup-battery arrangement
- Single-storey versus multi-storey construction
- Roof and ceiling access
- Concrete, raked or unusually high ceilings
- New cabling or interconnection work
- Time required to diagnose nuisance activation
RCD cost factors
Pricing can vary with:
- Number of RCDs and circuits
- Whether an RCD or RCBO is appropriate
- Available switchboard space
- Age and condition of the switchboard
- Old fuses or damaged equipment
- Circuit identification and testing time
- Wiring or appliance faults
- Whether a broader switchboard or mains upgrade is required
Can you quote from photos?
For many straightforward replacements and clearly visible switchboard jobs, yes.
Useful photos include:
- Front and side of each smoke alarm
- Model, manufacture or expiry labels
- The alarm's location in the room or corridor
- The whole switchboard
- RCD and circuit labels
- Any damaged or concerning component
Faults involving repeated tripping, hidden wiring or uncertain circuit coverage usually require onsite testing.
Where an onsite diagnostic or quotation visit is necessary, we tell you the fee beforehand. If you proceed with the quoted work, the site fee is deducted from the final invoice.
Quoted prices include GST. Standard travel within our normal Perth service area is included.
Properties approximately more than 35 kilometres from Malaga may attract an additional travel charge. We will disclose this before booking.
Owner and occupant maintenance
Routine smoke alarm and RCD testing
Smoke alarms
DFES recommends that occupants:
- Test each alarm monthly
- Check the mains-power indicator where applicable
- Clean around the alarm at least yearly
- Replace a removable 9-volt backup battery annually
- Replace the entire smoke alarm after ten years
Do not assume replacing the backup battery extends the life of an old alarm. The smoke-sensing components also deteriorate over time.
RCDs
RCDs should be tested according to the manufacturer's instructions or every three months, whichever requires more frequent testing.
Before testing:
- Save computer work.
- Consider equipment that may be affected by a brief power interruption.
- Press the button marked T or Test.
- Confirm that the switch trips immediately.
- Reset it to restore power.
Do not remove the switchboard cover.
If the RCD does not trip, will not reset or immediately trips again, contact a licensed electrical contractor.
Clear advice and licensed work
Why choose Neighbourhood Electrical & Air?
Licensed electricians
Electrical work is completed under WA Electrical Contractor Licence EC14280 by qualified members of our own team.
Clear scope before work starts
We explain whether the issue calls for a straightforward replacement, testing, fault finding or more extensive switchboard work.
We do not expand the agreed scope without first explaining the reason, options and cost.
Practical quoting
When the scope is clear from photos, we can often quote without an initial site visit.
Any diagnostic or attendance fee is explained before the appointment.
Property access coordination
We work with homeowners, landlords, agents and property managers and can coordinate access to occupied and vacant properties.
Apartment jobs may also require access through strata, reception or a building manager where switchboards or meter rooms are shared or locked.
Local Perth team
Neighbourhood Electrical & Air is a family-owned business based in Malaga and services the wider Perth metropolitan area.
“They were prompt, efficient, and left the area immaculate.”
Google customer review displayed by Neighbourhood Electrical & Air
Before you book
Frequently asked questions
Will I receive an Electrical Safety Certificate?
It depends on the work completed.
Where the job is electrical installing work requiring an Electrical Safety Certificate, WA rules require the electrical contractor to provide it within 28 days.
Some maintenance and like-for-like replacement work is excluded, so the documentation depends on the exact scope.
If an agent or settlement representative has requested a specific certificate, report or form, let us know before booking.
Is this the same as a complete electrical safety inspection?
No.
This service focuses on smoke alarms and RCD safety switches.
A broader Electrical Safety Inspection can examine additional items such as:
- Switchboard condition
- Earthing
- Accessible wiring
- Power points
- Lighting
- Visible electrical damage
- Other safety concerns
When should I consider a switchboard upgrade?
A Switchboard Upgrade may be worth considering where the existing board has:
- Ceramic fuses
- Insufficient space for appropriate protection
- Damaged components
- Poor circuit labelling
- An arrangement unsuitable for additional RCD protection
We will explain whether targeted RCD work or a wider upgrade is the more practical option before expanding the job.
Perth · Licensed · Family-owned
Book a smoke alarm or RCD electrician in Perth
Whether you need to replace one expired smoke alarm, investigate a repeatedly tripping RCD or prepare a property for sale or rent, we will explain the required work and the cost approach before proceeding.
For a faster response, send photos of the alarms and switchboard together with your suburb and required completion date.
Gas Fitting Licence: GF20805
ARC Authorisation: AU066760HSM POWER PTY LTD
ABN 70 638 650 709
