South West Sydney · AS 3660.1
Collars, membrane and perimeter barriers installed before the pour on Cecil Hills builds, from the streets around Dunumbral Park and Doujon Lake out to the bush edge along the Westlink M7.
Quick answer
Yes, a new home in Cecil Hills needs a termite management system before it can be occupied. Cecil Hills is termite-prone, so the NCC requires a compliant system installed to AS 3660.1, with collars and any under-slab work done before the concrete is poured. Your City of Liverpool certifier needs the durable notice and installation certificate on file before issuing the Occupation Certificate.
Termite barriers in Cecil Hills
Cecil Hills became its own suburb in 1992, when land farmed since 1817 was subdivided for housing, so almost every home here was built from the 1990s onward inside the City of Liverpool. Dunumbral Park, with its walking paths, playgrounds and Doujon Lake, sits at the centre of the suburb, and the heritage-listed Cecil Hills Farm is one of the few reminders of the land's earlier use. New building work now is mostly infill: knockdown rebuilds on the original 1990s blocks, granny flats added behind an existing house, and the occasional new home on a remaining vacant lot. Every one of those needs the same termite management system before the certifier will sign off.
On the western side of the suburb, the Westlink M7 is the only thing separating rows of houses from bushland in the Western Sydney Parklands, and homes on that edge see more termite activity moving in from the reserve than the rest of Cecil Hills. Doujon Lake and the garden beds through Dunumbral Park keep the ground near the suburb's centre moist as well, which suits subterranean termites working their way toward a new slab. Whichever side of the suburb a block sits on, the entry points are the same: an untreated slab edge, a gap at a pipe penetration, or a join a builder covers over before anyone checks it. Getting the barrier in before the pour is the only way to close them properly.
Reviewed by Ismail, founder · South West Sydney coverage · Updated September 2026 · More South West Sydney suburbs
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Local conditions
Three things drive termite pressure on a Cecil Hills block, and they are not the same on every street.
Homes backing onto the Westlink M7 face the bush edge of the Western Sydney Parklands directly across the road reserve. We check back fences, sheds and roof lines closely on these blocks and usually recommend a full perimeter system rather than a partial one.
Dunumbral Park and Doujon Lake keep the ground near the suburb centre damp for longer after rain, which suits subterranean termites working toward a slab from a neighbouring garden. Blocks close to the park get careful attention at every pipe penetration and slab joint.
Most Cecil Hills building work now is a knockdown rebuild or a granny flat on a block first built out in the 1990s, often with established garden beds and old timber edging still in the ground. That material can already be hosting activity before your new slab goes down.
What we install here
We work on Cecil Hills knockdown rebuilds, new homes on the suburb's remaining vacant lots, and granny flats added behind an existing house, along with the occasional light commercial slab near the shopping village. Waffle pod and raft slabs are standard on these flat South West blocks. We time collars and any under-slab system around your plumber's rough-in and your concreter's pour date, and give you one fixed written quote from the plans that covers every stage, including a chemical perimeter once paving and landscaping go in.
Local knowledge
Most of our Cecil Hills work sits close to Cecil Hills Shopping Village, or around Dunumbral Park and Doujon Lake at the heart of the suburb, where garden beds and the lake edge keep the surrounding ground damp. Blocks nearer the Westlink M7, on the suburb's western edge, back onto bushland in the Western Sydney Parklands, and those get a more thorough perimeter because the termite pressure is coming straight off the reserve rather than a neighbour's yard.
Cecil Hills sits in the City of Liverpool, and like every NSW certifier the council wants two things on file before it issues the Occupation Certificate: a durable notice fixed inside the meter box that records the termite management system installed, and an installation certificate setting out the products used, the licensed installer and the areas of the building that are protected. We prepare both from the actual system fitted on your block, so there is nothing left for your certifier to chase once the barrier work is done.
Cecil Hills at a glance
| Suburb | Cecil Hills, NSW 2171 |
|---|---|
| District | South West Sydney |
| Distance from Sydney CBD | 33.3 km west |
| Certifying council | Sydney CBD Council |
| Standard applied | AS 3660.1 termite management systems |
| Installed | Before the slab pour, then staged through the build |
| Documents supplied | Installation certificate and durable notice |
| Typical builds covered | New homes, knockdown rebuilds, granny flats, duplexes, townhouses |
Systems we install
Every photo below is from one of our own Sydney jobs. We look at your slab design, site and budget, then recommend a system or a combination.
01A termite-resistant sheet laid over the whole prepared footprint before concreting, so termites can't come up through the slab anywhere.
02A sealed collar on every pipe, conduit and service that passes through the slab. These gaps are the most common hidden way in.
03Protection at the slab edge and into the wall cavity, which stops termites building hidden tunnels up the outside of the slab.
04An APVMA-registered termiticide zone in the soil, with an optional pipe network under paving so it can be recharged later without digging.
05Barriers for bearers, piers and raised timber floors on sloping or elevated blocks, where there's no slab to protect.
06Detailing for sandstone cuts, block retaining walls, step-downs and cut-and-fill sites, which are common across Sydney.
Why during construction
A retrofit can only treat around a finished house. A pre-construction system protects the parts nobody will ever be able to reach again.
A barrier put in during the build costs a fraction of a post-construction system, and far less than repairing termite damage.
New houses (Class 1) and outbuildings (Class 10) with termite-susceptible framing need a compliant termite management system.
Pipe penetrations and slab joints can only be fully protected while they're still open, before the concrete goes in.
An under-slab system covers ground that no treatment from outside the finished house can ever reach.
Your certifier needs the certificate and durable notice before issuing the Occupation Certificate. We supply both together.
Documented, compliant protection gives buyers, building inspectors and lenders confidence when the home is sold.
Installation stages
A termite barrier isn't a single visit. Each part goes in when the site is ready for it, and we fit around your plumber, concreter and bricklayer.
Send your plans and slab details. We recommend a system and give you one fixed price that covers every stage.
Collars go on every service once the plumber has set out, then the membrane or soil treatment is installed across the prepared site.
Perimeter and cavity protection is fitted as the brickwork or cladding goes up, so there's no unprotected gap at the slab edge.
Where it's specified, the chemical perimeter or reticulation system is completed around the building before paths and gardens go in.
A durable notice goes in the meter box, and the installation certificate goes to your builder and certifier.
The owner gets simple care instructions and an inspection schedule so the system keeps doing its job for years.
Compare systems
Both can meet AS 3660.1. The best choice depends on your slab type, what surrounds the house and how much ongoing upkeep the owner wants.
Physical protection
Entry-point protection
Soil protection
Top-up protection
Most of the Sydney builds we work on use a combination: physical collars on every penetration plus a physical or chemical perimeter.
For builders & developers
Builders, developers and owner-builders get a fixed quote from plans, a technician who turns up when the site is ready, and paperwork that never holds up sign-off.
Consistent pricing across lots, one point of contact and a full document set for every dwelling.
Missing durable notices and unclear install records are a common reason Occupation Certificates get held up. We hand everything over together so your certifier has it all in one go.
Paperwork
A complete document set for the builder, the certifier and every future owner of the property.
A permanent notice in the meter box showing the system, install date, installer, any chemical's life expectancy and inspection advice.
For: certifier, owner, future owners
Written confirmation of the system and products used, the areas protected and our licence details.
For: builder, certifier, owner
Details of the physical system or termiticide installed, including safety data sheets for any chemicals.
For: builder, owner
How to keep the system working, plus the recommended inspection frequency under AS 3660.2.
For: homeowner
From real jobs
Photos from our own Sydney sites, not stock images. Tap any photo to see it larger.
Membrane barrier across a large residential slab
Barrier work on a Sydney Harbour site
Installation through sandstone excavation
Perimeter barrier and sleeves on a new slab
Waffle pod formwork with collared penetrations
Membrane detailed against a retaining wall
Membrane sealed around a column
Protected slab edge with collar in place
Collared penetrations before the pour
Perimeter barrier on a completed slab edge
Pipe penetrations sealed into the membrane
Collars fixed through mesh before concreting
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Pricing
Every build is different, so we don't guess. We price from your plans and give you one fixed written quote. Quoting is free.
After handover
A barrier only works while it stays intact and visible. Pass these on to the owner.
Free fixed quote
Tell us about your build and get a clear, fixed price, fast. We usually reply within 30 minutes during business hours.
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Cecil Hills questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Blocks backing onto the Westlink M7 face bushland in the Western Sydney Parklands directly across the reserve, and that bush edge carries more termite pressure than streets further into the suburb. We usually recommend a full perimeter system on these blocks rather than a partial one, with extra attention at the back fence, any shed footings and the roofline where trees overhang.
Yes. A secondary dwelling gets its own termite management system, collars on every penetration and a perimeter or under-slab barrier suited to the slab type, with a separate installation certificate for that structure. Where the main house already has protection in place we tie the new work into it wherever the existing detailing allows, so the whole property is covered.
Right up to the boundary. The lake and the garden beds through Dunumbral Park keep nearby ground damp, so we usually detail a continuous physical barrier at the slab edge on those blocks rather than relying on soil treatment alone, which holds up better in consistently moist ground and needs less ongoing chemical top-up.
In most cases, yes. The National Construction Code requires a termite management system for new houses and outbuildings in termite-prone areas where the primary building elements can be damaged by termites. Sydney is termite-prone, so the system is installed to AS 3660.1 and your certifier asks for the installation certificate and durable notice before the Occupation Certificate is issued.
It depends on slab area, perimeter length, the number of pipe penetrations, the system chosen, site complexity and how many visits the build needs. Send us the plans and we return one fixed written quote covering every stage. Quoting is free.
Nearby
Same crew, same staging and the same certifier-ready paperwork, right across the South West Sydney.
Service areas
From the Eastern Suburbs and Inner West to the Hills, the Shire and the western growth corridors. Every suburb has its own page with the local ground conditions, the council that certifies the work and the questions builders there ask us.
Slab pour coming up?
Send us your plans today for a fixed quote, or call and talk to a licensed technician about your site.
