South West Sydney · AS 3660.1
Collars, membrane and a full perimeter fitted ahead of the pour for Ashcroft 2168 rebuilds and additions on the original 1970s Green Valley development streets near Liverpool City.
Quick answer
Liverpool City will not sign off an Occupation Certificate for a new home or major addition in Ashcroft without a compliant termite management system, since the suburb sits in a termite-prone area. That work has to follow AS 3660.1 and be finished before the slab is closed up. The certifier then receives the fixed meter-box notice, along with a matching certificate describing the installation.
Termite barriers in Ashcroft
Ashcroft is a Liverpool City suburb in postcode 2168, about 29 km west of the Sydney CBD, which took shape in the early 1970s as part of the Housing Commission's Green Valley development. Much of the housing still dates from that period, set along quiet residential streets close to Miller and Busby, and homes now around fifty years old are a steady source of renovation, addition and knockdown rebuild work. Each of those, along with any granny flat or duplex conversion on the larger Green Valley-era blocks, needs the same termite management system as a fresh block.
Homes that are now around fifty years old tend to have more gaps than new builds. Timber window frames, tired weep holes, worn door seals and cracked paths all give pests easy ways in over time, and where dwellings are attached, activity can travel between neighbours. Ashcroft also sits close to Elouera Bushland Reserve, a patch of remnant bushland that can add termite pressure from beyond the fence line, so a new slab or extension here has to guard against both an ageing structure and a nearby bush boundary at once.
Reviewed by Ismail, founder · South West Sydney coverage · Updated September 2026 · More South West Sydney suburbs
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Local conditions
Three conditions specific to Ashcroft change how we plan a termite barrier.
This patch of remnant bushland sits close to the suburb and can support termite colonies that forage beyond its boundary into nearby yards. Blocks nearest the reserve get the perimeter treated in full, with close attention paid at the fence line itself.
Homes built during the early 1970s Housing Commission development are now at the age where rebuilds and major additions are common, and demolition on these blocks often exposes gaps around old footings and timber that need treating before a new slab goes down.
Some of the original Green Valley housing sits in attached or semi-detached groups, and where that is the case, termite or pest activity can move between neighbouring dwellings through shared structure. A rebuild or extension in this layout needs the party-wall junction detailed as carefully as the slab edge.
What we install here
We work on Ashcroft knockdown rebuilds, renovations, granny flats and duplex conversions on the original Green Valley-era blocks. Waffle pod and raft slabs are standard, and where a rebuild replaces an attached or semi-detached original dwelling we pay particular attention to the party-wall junction. Pricing is a single fixed figure worked out from the plans, and we time the visit carefully so it lands cleanly between rough-in and the concreter's booking on site.
Local knowledge
Blocks closest to Elouera Bushland Reserve get the most attention to the perimeter, since remnant bush like this can carry termite activity well beyond its own boundary. Sutton Park, nearer the suburb centre, adds a smaller pocket of lawn and garden that is worth checking on rebuild sites close by. Further from both, on the quieter original Green Valley streets, jobs settle into a fairly ordinary slab-edge and penetration job on one of the suburb's fifty-year-old blocks.
Liverpool City is the certifying council for Ashcroft, and before it signs off an Occupation Certificate it wants two things on file: a permanent record describing the system, fixed inside the meter box, and a certificate that lists the products, the coverage and our licence number. Both are handed over the day the barrier goes in, and for rebuilds of the original attached dwellings we also flag how the new work meets any shared wall.
Ashcroft at a glance
| Suburb | Ashcroft, NSW 2168 |
|---|---|
| District | South West Sydney |
| Distance from Sydney CBD | 29.1 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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Ashcroft questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Blocks backing onto or close to the reserve usually need a full physical perimeter system, because remnant bushland can support colonies that forage into nearby yards well beyond the reserve's own boundary line. We assess the specific distance and any boundary conditions carefully at quoting stage before pricing the job.
We check the site for old footings, timber and any gaps typical of a fifty-year-old Housing Commission-era build, since that material and those entry points can carry termite activity toward a new slab if left untreated. The new system is then installed properly to AS 3660.1 before the concrete pour begins.
Yes. Under the NCC a granny flat counts as its own structure and needs its own compliant system, regardless of whatever cover the main house already carries. On the larger Green Valley-era blocks common in Ashcroft we usually tie the new perimeter into the existing house's protection where the layout allows, and issue a separate installation certificate for the new structure.
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.
