Home Extensions · Kings Langley NSW 2147
Home extensions in Kings Langley, done properly.
Home extensions in Kings Langley by a licensed builder, for the brick family homes built when the suburb was new. 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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More room for a growing family
Extending a Kings Langley home.
Strava Group builds house extensions in Kings Langley: family rooms pushed into the backyard, larger kitchens and meals areas, master suites with an ensuite, and roofed entertaining areas. The suburb was named in 1976 and gazetted in 1987, and most of its homes are brick houses from the 1970s and 1980s. Sound structure and a simple approval path mean more of the budget goes into the new space itself.
Extensions we build for Kings Langley homes:
- Rear family room extensions
- Kitchen and dining extensions
- Master suites with ensuite and robe
- Covered outdoor entertaining areas
- Openings in brick rear walls
- Rumpus and media rooms
- Laundry and storage extensions
- Brick and roof tile matching
Plenty of room already, with a kitchen and bathrooms that feel their age? Our page on home renovations in Kings Langley covers that work. Keen to keep every metre of lawn? Look at second storey additions.
A typical Kings Langley brief: the kitchen and family room are too small for how the household lives now. The rear wall opens, the living space moves out into the yard, and there is still lawn left for the kids.
Quick Answer
Most home extensions in Kings Langley 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. Here the biggest swings come from how wide the brick rear wall is opened, whether an ensuite goes in and how hard the brick is to match.
Local knowledge
What we know about extending in Kings Langley.
Kings Langley is a straightforward place to extend. These are the details that still matter.
Council
Kings Langley sits wholly in Blacktown City Council under the Blacktown Local Environmental Plan 2015, which has no heritage conservation areas. That leaves most detached homes eligible for Complying Development on a single storey rear addition, with a DA kept for lots carrying site specific controls. Details are on the Blacktown City Council website and the NSW Planning Portal.
Housing stock
Mostly brick homes from the seventies and eighties, single and double storey, under tiled roofs. Many still have the original kitchen at the back with a small family area beside it, which is exactly where an extension adds the most.
Brick and tile matching
Bricks from that era are often discontinued. We track down the nearest match and mix it through the new wall, or finish the extension in render or cladding so the change of material looks planned. Roof tiles are matched by profile and colour where they can still be found.
Opening the rear wall
A new opening in a brick rear wall needs an engineered beam and temporary propping while the brick is cut. We size the opening with the engineer early, because its width sets how open the new living area feels.
Yard and setbacks
Lots here usually leave room for a rear extension with a usable yard behind it. The setback, site coverage and landscaped area limits in the code decide the maximum size, so we measure them on the first visit.
Soil and movement
Clay soils that swell and shrink with the seasons are common in this part of Sydney. The geotechnical report sets the footing design, and articulation joints let the new brickwork move without opening a crack at the junction.
Start here
Tell us about your Kings Langley 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 Kings Langley 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 Kings Langley.
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.
Solid brick homes and a simple approval path keep many Kings Langley projects in the lower to middle part of the band. Where a project goes higher, the cause is usually a wide opening in a brick wall, an ensuite or a large covered outdoor area tied into the roof, along with how much of the existing structure has to change.
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
Kings Langley 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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Orom Gabriel
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Clara Shabow
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Nearby
Home extensions near Kings Langley.
We build extensions across Blacktown, the Hills and the surrounding suburbs. Select a suburb for local council information and what extensions there typically cost.
Blacktown and the Hills
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 Kings Langley? We also build second storey additions and home renovations in Kings Langley.
Extend your Kings Langley home properly.
Ready for more room?
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 Kings Langley
Other Strava Group services in Kings Langley
Each page covers the local council, the homes we see in Kings Langley and what that kind of project typically costs.