South West Sydney · AS 3660.1
Collars, under-slab membrane and perimeter barriers installed to AS 3660.1 across Leppington's new estates and remaining rural blocks around Leppington Oval and the South West Rail Link corridor, timed to your builder's pour.
Quick answer
Yes, a new home in Leppington needs a termite management system before the Occupation Certificate is issued. Leppington sits in a termite-prone part of the Camden and Liverpool council areas, so the NCC requires a compliant system installed to AS 3660.1. Collars and any under-slab work go in before the concrete pour, and the durable notice plus installation certificate go to your certifier afterwards.
Termite barriers in Leppington
Leppington sits about 39 km west of the Sydney CBD, mostly within Camden Council, with the north-western corner falling into the City of Liverpool. The suburb takes its name from Leppington Park, a property granted to William Cordeaux in 1821, and for most of its history this was farming country. That changed in 2004, when Leppington was folded into Sydney's South West Growth Centre, and again in 2015, when Leppington station opened as the terminus of the South West Rail Link. New house-and-land estates are now going up along Camden Valley Way beside the paddocks and sheds that are still working properties, so builders here are pouring slabs on both fresh release land and infill rural blocks.
That mix matters for a termite barrier. Leppington has no real bushland or waterway edge, but it does have decades of undisturbed paddock soil now being cut, filled and built on for the first time, and older rural blocks nearby with sheds, dams and stockpiled timber that keep termite colonies active close to new house sites. Fresh estates also mean fresh service trenches, stormwater lines and driveway crossings, each one a potential gap in a barrier if it is not detailed before the pour. Getting collars, membrane and the perimeter right while the slab is open is the only practical time to close those routes, because once paving, turf and gardens go in over the top, the same work means cutting into finished ground.
Reviewed by Ismail, founder · South West Sydney coverage · Updated September 2026 · More South West Sydney suburbs
Get my fixed quote
Local conditions
Three things push termite risk on Leppington building sites, and each shapes how the barrier is detailed.
Leppington's release land was farmed for generations before the estates arrived, and clearing paddocks displaces termite colonies that were feeding on old fence posts, stumps and windrows straight onto the nearest new slab. We treat that disturbed ground as active until proven otherwise, not as a clean start.
Remaining farms and hobby blocks around Leppington still carry sheds, stacked timber and old yards that keep termite activity going close to new estate boundaries. A barrier on a new build has to hold against pressure coming from a neighbouring property it cannot control.
Fresh estates mean fresh stormwater, sewer and driveway crossings cut through the slab edge soon after the pour. Every one of those penetrations needs a collar and a properly lapped membrane, because a barrier with the wrong number of gaps is the same as no barrier at all.
What we install here
We install under-slab membrane, penetration collars and physical or chemical perimeter systems on Leppington's new house-and-land builds, townhouse stages and the odd knockdown on an older rural block, working to the waffle pod and raft slab designs standard across the growth area. Because most sites here are run by a project builder on a tight program, we schedule our visit around the plumber's rough-in and return if retaining or extra fill changes the slab edge. One fixed quote from your plans covers every stage, so a barrier inspection never becomes the reason your pour is delayed.
Local knowledge
Most of our Leppington work sits within a few streets of Leppington Oval and Willowdale Shopping Centre, where new estates back directly onto older rural allotments still running sheds and stock. Blocks closest to those working properties get the most attention at the boundary, since that is where termite pressure is most likely to be moving toward a new slab rather than away from it. On estate stages nearer the station and Camden Valley Way, the work is more often several dwellings on one pour, where collar counts and service penetrations drive the schedule.
Most Leppington builds are certified through Camden Council, with the suburb's north-western corner falling under the City of Liverpool. Either way the certifier asks for the same two things before issuing the Occupation Certificate: a durable notice is fitted to the meter box, and an installation certificate details the areas covered, the treatment products and the licensed installer's details. We supply both along with product data sheets, so your sign-off is never held up waiting on paperwork from us.
Leppington at a glance
| Suburb | Leppington, NSW 2179 |
|---|---|
| District | South West Sydney |
| Distance from Sydney CBD | 39.2 km west |
| Certifying council | Camden 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
Google reviews
Real, verified reviews from homeowners and businesses we've worked with.
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.
Get a fixed quote
Leppington questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Collars and any under-slab system are installed after the plumber has set out the drainage and before the concrete is poured, so we lock our visit into the same window as your plumber and concreter. On a builder's program that can move quickly, so give us a rough pour date as early as you have one.
Often, yes. Blocks that back onto working farms or hobby properties sit closer to active termite colonies than a fresh estate lot, so we usually recommend a full physical perimeter rather than a minimal strip, with particular attention to any timber stored near the new build during construction. We are happy to talk through the specifics once we see your plans.
Yes, that is most of what we do in Leppington. We work from your plans to give one fixed quote covering every stage, attend after the plumbing rough-in for collars and under-slab work, and return if the slab edge changes, so our visits fit the builder's program rather than the other way around.
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.
