Home Extensions · Cabramatta NSW 2166
Home extensions in Cabramatta, done properly.
Home extensions in Cabramatta by a licensed builder who reads the flood controls and finds the sewer line before drawing a single wall. Most extensions run $70,000 to $300,000 depending on size and how much of the existing house has to change, itemised quote, honest programme, one builder from concept to handover.
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Ground floor additions
Extending a Cabramatta home the right way.
Strava Group builds house extensions in Cabramatta: rear living areas, ground floor bedrooms with their own bathroom, bigger kitchens for families who cook every day, and covered outdoor rooms. Many of the older detached homes here are compact post-war houses with room behind them, which makes a rear addition the natural way to gain space. What decides whether it goes smoothly happens early: the planning certificate, the floor level and what is buried in the backyard.
Extensions we build for Cabramatta homes:
- Rear living and kitchen extensions
- Ground floor bedroom and bathroom suites
- Extensions designed to flood floor levels
- Replacing old fibro and lean-to additions
- Second bathrooms and laundries
- Covered outdoor rooms off the kitchen
- Structural openings in the rear wall
- Recladding so old and new match
If the house is the right size and the layout is what fails you, see home renovations in Cabramatta. If the yard has to stay whole, second storey additions are the other route.
A typical Cabramatta extension adds a bedroom and bathroom at the back for a parent or an adult child, so nobody has to move. The room itself is simple. The floor level, the sewer line and the flood controls need sorting first, and we sort them before design.
Quick Answer
Most home extensions in Cabramatta run $70,000 to $300,000 depending on size and how much of the existing structure has to change, at roughly $2,500 to $4,500 per square metre for ground floor work, with around $30,000 in preliminaries (design, engineering and council approvals, plus site set-up) on top. Removing old fibro additions, meeting a flood floor level and adding a second bathroom push the figure up most here.
Local knowledge
What we know about extending in Cabramatta.
Cabramatta extensions are shaped as much by the creek and the drainage as by the house. This is what we check.
Council
Cabramatta is in the Fairfield City Council area under the Fairfield LEP 2013, which contains no heritage conservation areas. Plenty of extensions here can use Complying Development through a private certifier. A property holding a heritage item needs a Development Application, and lots with flood controls may too. Controls are published by Fairfield City Council and on the NSW Planning Portal.
Cabramatta Creek
Some lots near Cabramatta Creek carry flood planning controls. They come through the LEP flood clauses, council flood studies and the development control plan, and the section 10.7 planning certificate for your property shows whether they apply. Where they do, council sets a minimum height for new habitable floors, and that height drives the whole design.
Matching floor levels
When the flood planning level sits above your existing floor, the extension cannot simply line up with the house. The usual answers are a step or short ramp at the join, or giving the new space a use where a level change works, such as a family room one step up from the kitchen. We show you the levels on a section drawing before you commit to a layout.
Housing stock
Many of the older detached homes are compact post-war houses in brick, fibro or weatherboard, often with additions from different decades at the back. Anything built before the 2003 national ban may have asbestos cement sheet in it, most often in eaves, old sleepouts and wet areas, so we sample it before demolition and price licensed removal into the quote.
Sewer and stormwater
In older subdivisions the Sydney Water sewer main often crosses the backyard, right where an extension wants to go. Building over or close to it needs Sydney Water approval and sometimes deeper footings. We locate the line before design, and roof water from the new section is piped into the stormwater system so it never sits against the footings.
Subfloor at the join
Where the original house sits on brick piers and timber bearers, the extension usually goes on a slab or a new engineered subfloor. The junction between the two is where cracking and bouncy floors start, so we tie the frames together and set the levels so the change cannot be felt underfoot.
Start here
Tell us about your Cabramatta home.
No sales pitch, no obligation. Here is exactly what happens when you enquire:
One at a time, takes about two minutes, so the first conversation is about your project rather than the basics.
The Strava standard
How we build differently.
An extension lives or dies at the junction between old and new. We build for longevity, and on every Cabramatta extension we run:
Every new-to-existing junction properly detailed
This is where most extensions crack, leak and part company with the house, and the cause is almost always a detailing shortcut. Ours get a proper structural tie, flashing and movement detail.
The existing structure gets rectified first
Where the extension meets the house, we screw off and re-brace the adjoining structure, tying new and old together so the whole building moves as one. Future cracking gets designed out at frame stage instead of patched at the paint stage.
Footings engineered for the ground they sit on
New footings are engineered for your soil and detailed against the existing ones, because differential movement between old and new slabs is the classic extension failure, and it matters more on an older house whose original footings were never engineered to modern standards.
Furring channels for a dead flat finish
Where new ceilings and walls run through to existing rooms, furring channels give one level plane across both, so you cannot see where the house ends and the extension begins.
Waterproofing is a documented hold point
New wet areas are inspected and photographed before a single tile goes on, to AS 3740, and new roof-to-old-roof junctions get the same treatment.
Everything photographed before it is covered
You receive the record at handover, so in ten years you know exactly what is behind your walls and under your floor. Want more than photos? We can also capture a full 3D virtual model of the frame, plumbing, wiring and waterproofing before the plasterboard goes on, available as an optional add-on.
Before starting Strava Group, I spent seven years on the tools as a carpenter and five years running sites. The failures I kept seeing in extensions were always at the join: cracked cornices along the old wall line, roofs that leaked where new met old, floors that stepped as slabs settled differently. None of it was illegal. All of it was avoidable. None of this shows up in a finished-room photo. All of it shows up in year seven.
Honest numbers
What a house extension actually costs in Cabramatta.
Most builders will not put numbers on a website. We will, because the alternative is wasting your time and ours across three meetings before anyone mentions a figure.
| Item | Typical range |
|---|---|
| Home extension, depending on size and scope | $70k–$300k |
| Ground floor extension work | $2,500–$4,500 /m² |
| Preliminaries, on top of build cost | approx. $30,000 |
Preliminaries are the costs that exist before a single wall moves: design, engineering and council approvals, plus site set-up such as site fencing, temporary services, waste removal, insurances and supervision. They are real, they are unavoidable, and a quote that does not show them separately has either buried them or forgotten them.
In Cabramatta the compact houses are simple to work with, but flood floor levels, asbestos removal and old additions that have to come down first tend to push projects toward the middle of the band. The number of wet areas you add and how much of the existing structure has to change decide the rest.
Every project is quoted properly after a site inspection. These ranges are here so you can decide whether it is worth a conversation.
Good to know
Cabramatta extension questions.
Rated 5.0 on Google.
We had Strava Group complete major renovation works on our property and were blown away with the quality. The attention to detail and overall finish were amazing.
Great communication, honest work, easy to work with, highly recommend to work with for any new build/renovations. If you are looking to get work done without worrying about shortcuts Strava Group is builder to use.
I highly recommend Strava Group to everyone great workmanship, reliable service, and I couldn’t be happier with the result.
I couldn't be happier with the work from Strava Group. From the beginning, Stav and the team was friendly, honest, and super easy to deal with.
We engaged Strava Group for a home extension and renovation. We are incredibly happy with the service and the results we achieved. From day one Stav and team where always willing to help with any issues we had and we loved that the main focus was as quality and longevity. Highly recommended
Had a great experience with Strava Group. The team was easy to deal with, super professional, and kept me in the loop the whole way through. They really listened to what I wanted and made the whole process feel smooth and stress-free.
Aloona T.
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Nearby
Home extensions near Cabramatta.
We build extensions across the Fairfield area and the surrounding western suburbs. Select a suburb for local council information and what extensions there typically cost.
Fairfield and western Sydney
The Hills District
Hornsby and the Northern Suburbs
Ryde, Hunters Hill and the North Shore
Inner West
Parramatta
Western Sydney
Southern Sydney and St George
Looking for a different service in Cabramatta? We also build second storey additions and home renovations in Cabramatta.
Extend your Cabramatta home properly.
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Tell us about your property and what you want to add. We respond within 24 to 48 business hours with honest advice and real numbers, no cost, no obligation.
More in Cabramatta
Other Strava Group services in Cabramatta
Each page covers the local council, the homes we see in Cabramatta and what that kind of project typically costs.