Do I need council approval for an extension in Cecil Hills?

Usually yes, and often through Complying Development. Many Cecil Hills homes can use a Complying Development Certificate through a private certifier when the extension meets the setback, height and landscaped area rules. Lots on the Parklands edge with bushfire mapping need a BAL assessment first, and the two highest ratings mean a DA through Liverpool City Council. We confirm the pathway for your property before quoting.

How long does a home extension take to build in Cecil Hills?

Most extensions run 12 to 20 weeks on site. Design and approvals happen before that: a CDC takes about 4 to 8 weeks, and a DA can take up to 6 months, depending on council. We give you a programme with the quote, before you sign anything.

Can I live at home during the extension?

Usually yes. Because the work is concentrated at the rear or side, most Cecil Hills families stay in the house for most of the build, with a shorter disruptive period when we break through and connect the new space to the old. We plan the breakthrough stage with you so you know exactly when it is coming.

Should I extend out or add a second storey in Cecil Hills?

If your home is already two storey, building out is the answer. On single storey homes, a rear extension is usually simpler and cheaper per square metre, while going up suits a smaller lot where the yard has to be kept. We build both, so the advice is honest: we look at your block and tell you which one your home actually wants. See our second storey additions page for that path.

Will the extension match my Cecil Hills brick?

More often than in older suburbs, yes. Bricks and roof tiles from the late eighties and nineties sit closer to current production, so a near match can often be found and blended in. Where it cannot, we render or clad the extension so it reads as a deliberate addition. What must always match is the standard of the junction between old and new, which is where our detailing does its work.

How will I know what is happening during my extension?

Two ways. You get a weekly update from the builder running your job, whether or not there is good news in it. And you get access to our client portal, where you can log in any time to see your documents, selections, variations and job status. No chasing, no phone tag, no wondering.

Are you licensed and insured?

Yes. Strava Group holds NSW Builder's Licence 487370C and carries public liability insurance and Home Building Compensation Fund cover on all residential work over the statutory threshold. You can verify the licence directly through Verify NSW.

Timber roof and wall framing in a renovation

Home Extensions · Cecil Hills NSW 2171

Home extensions in Cecil Hills, done properly.

Home extensions in Cecil Hills by a licensed builder, matched to the brick, roof and slab of a late eighties or nineties home. 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.

Get Your Extension Assessed Call 0450 605 080

NSW Licensed Builder
487370C

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Liverpool City Council areaNSW Builder’s Licence 487370CItemised quotesClear inclusions & exclusions0450 605 080

More living space at ground level

Extending a younger Cecil Hills home.

Strava Group builds house extensions in Cecil Hills: rear family rooms, bigger kitchens and meals areas, ground floor guest suites and covered outdoor living. The suburb was built from the late 1980s through the 1990s, with some building into the early 2000s, so most homes are structurally young. That changes the job. There is less hidden damage to deal with, the bricks are often close to what is still made, and the work is mostly about adding the room the original floor plan never had.

Extensions we build for Cecil Hills homes:

Rear family and meals room extensions
Ground floor guest suites with ensuite
Kitchen extensions into the yard
Alfresco roofs tied into the house
Home offices and media rooms
Bigger laundries and storage
Wider openings to the outdoor area
Brick and roof matching to the original

Already two storey and still short of room? Building out at the back is usually the answer. If you want space upstairs on a single storey home, see second storey additions, and if it is the inside that needs work, see home renovations in Cecil Hills.

Many Cecil Hills briefs start the same way: a two storey home with a formal lounge nobody sits in and a family room that is too small. The extension pushes the family room and kitchen out into the yard, and the formal room finally gets a job.

White shaker-style kitchen with stone benchtops, induction cooktop and industrial pendant lights

Quick Answer

Most home extensions in Cecil Hills 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. Bushfire rated construction on edge lots, tying a new roof into a two storey rear wall and adding an ensuite are what lift the price most here.

Local knowledge

What we know about extending in Cecil Hills.

A Cecil Hills extension is mostly a design and matching exercise, with one big local variable on the edge of the suburb.

Council

Cecil Hills is in the Liverpool City Council area under the Liverpool Local Environmental Plan 2008. The housing estates carry standard residential zoning, so many rear and side extensions can be certified privately as Complying Development. Edge lots with bushfire mapping, and designs outside the code limits, go to a Development Application. Controls are published by Liverpool City Council and on the NSW Planning Portal.

The Parklands edge

Cecil Hills adjoins the Western Sydney Parklands, and some lots on the edge of the suburb are mapped bushfire prone. There, an extension needs a Bushfire Attack Level assessment and the new work is built to that rating: ember screening, rated glazing and non-combustible cladding and decking as the level rises. At BAL-40 and Flame Zone, Complying Development is off the table.

Housing stock

Mostly brick veneer homes on concrete slabs, many of them two storey, with tiled roofs and the original kitchen and family room across the back. Brick veneer extends simply once the load on the rear wall is engineered, and a slab house makes matching the new floor level straightforward.

Matching brick and tile

Bricks from this era are often still produced or close to it, so a near match can usually be sourced and blended. Roof tiles are harder. We check the profile and colour early and, where an exact match is gone, re-roof the visible face or detail the junction so the change looks intentional.

Yard and setbacks

Many two storey homes here already cover a good share of the lot, so the landscaped area and private open space rules usually set the limit on how far an extension can go. We measure those before talking about room sizes. Where a side path is wide enough for a small excavator the build is simpler, and where it is not, we plan around it.

Ground and drainage

Expect reactive clay, so footings are engineered to the site classification from a geotechnical report. On sloping lots the new slab may need a step or a retaining wall, and surface water is directed away from the join between old and new, which is where water does its damage.

Start here

Tell us about your Cecil Hills 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.

Start Your Enquiry Call 0450 605 080

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 Cecil Hills 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 Cecil Hills.

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 Cecil Hills the younger structure keeps surprises down, so many projects land in the middle of the band. Two storey homes add a little, because the roof tie-in at the back is more involved, and bushfire rated construction on edge lots adds more. Otherwise the price follows how much of the existing structure has to change and how many wet areas you add.

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

Cecil Hills extension questions.

From our clients

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Nearby

Home extensions near Cecil Hills.

We build extensions across the Liverpool and Fairfield areas and the surrounding western suburbs. Select a suburb for local council information and what extensions there typically cost.

Liverpool and western Sydney

Home Extensions Bossley Park

All Sydney extension areas

Looking for a different service in Cecil Hills? We also build second storey additions and home renovations in Cecil Hills.

Extend your Cecil Hills 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.

Get Your Extension Assessed Call 0450 605 080

Other Strava Group services in Cecil Hills

Each page covers the local council, the homes we see in Cecil Hills and what that kind of project typically costs.

Home Renovations in Cecil Hills

Transform the layout, appearance and performance of your existing home through one carefully managed renovation.

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