St George & Bayside · AS 3660.1
Collars, under-slab membrane and perimeter barriers installed before the pour on Bexley rebuild sites, from the streets around A E Watson Reserve down towards Rockdale.
Quick answer
Yes. A knockdown rebuild or new home in Bexley needs a termite management system, because Bayside Council's area is termite-prone under the NCC. Collars and any under-slab work are fitted before the concrete pour, built to AS 3660.1, and your certifier receives the durable notice plus installation certificate ahead of the Occupation Certificate being issued.
Termite barriers in Bexley
Bexley is one of the older parts of the St George district, a suburb of established detached houses on mature, well-planted blocks that has no railway station of its own and relies on buses into Rockdale and Hurstville. Most new work here is knockdown rebuilds on those old blocks, plus a scatter of granny flats and secondary dwellings behind existing houses, rather than greenfield estates. Bayside Council is the certifying authority for the area, and every one of those projects needs a termite management system before the Occupation Certificate is signed off.
Rebuilding on a block that has carried a full-brick house and a mature garden for decades brings a particular set of soil conditions to the slab edge: old stumps, buried garden timber and years of mulch and watering, all within metres of where the new footings go in. Termite colonies feeding on that material do not disappear when a house comes down, and a new slab is simply the next food source they find. Getting the barrier detailed and installed before the pour is the only way to close that off properly rather than chase it after handover.
Reviewed by Ismail, founder · St George & Bayside coverage · Updated September 2026 · More St George & Bayside suburbs
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Local conditions
Three local conditions shape how we detail a Bexley barrier, and none of them are about the weather.
Decades of garden beds, tree removals and old stumps on typical Bexley rebuild sites leave buried timber in the soil that can feed a colony long before a new slab goes down, so we treat the soil as carefully as the slab edge.
Bexley's older full-brick housing stock still carries timber sub-floors and framing in the streets around a new build, which keeps established colonies active in the area and pressure on any adjoining rebuild higher than a newer suburb.
Many Bexley blocks sit close to a neighbour's fence line and garden, so a barrier has to be detailed right to the boundary and around party walls on duplex or semi-style rebuilds, not just across the open slab area.
What we install here
Most of our Bexley work is knockdown rebuilds and secondary dwellings on established blocks, with the occasional low-rise unit slab closer to Rockdale. Waffle pod and raft slabs are standard, and every pipe and conduit penetration gets a sealed collar ahead of the pour, before the perimeter and any chemical or physical barrier go in as the walls rise. A single quote from your plans covers every visit, timed to your builder's program so the barrier never holds up a pour date.
Local knowledge
Rebuild sites near A E Watson Reserve back onto established trees and leaf litter, so the perimeter on that side gets the same attention as a bushland edge would. Closer to Rockdale station and Bexley Golf Course, blocks are tighter and the work is more often a unit slab with a higher collar count. Either way, the barrier is priced from the plans, not guessed on site.
Bexley builds are certified through Bayside Council, formed from the earlier Rockdale and Botany councils. Sign-off on the Occupation Certificate needs two items: a durable notice mounted inside the meter box, and an installation certificate identifying the products used, the protected areas and the installer. We hand over both, plus product data sheets and maintenance advice, so the paperwork is ready when your other approvals are.
Bexley at a glance
| Suburb | Bexley, NSW 2207 |
|---|---|
| District | St George & Bayside |
| Distance from Sydney CBD | 12.3 km south-west |
| Certifying council | Bayside 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.
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Bexley questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Yes, a rebuild is treated the same as a new home under the NCC. Because the block has usually carried a house and garden for decades, we pay particular attention to old stumps and buried timber in the soil, not just the slab edge, and detail the barrier to suit whatever demolition and levelling has changed on site.
Yes. A secondary dwelling gets its own collars, under-slab or perimeter system and durable notice, sized to the smaller slab. Where the main house already has protection in place, we tie the new work into it as far as the detailing allows, so there is no gap between the two systems.
We detail the perimeter right up to the fence line and around any party wall, which matters more on Bexley's narrower blocks than on a wide suburban lot. Collars and membrane still go in before the pour, and we plan the visit around your plumber and concreter so the boundary work does not slow the build.
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 St George & Bayside.
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.
