St George & Bayside · AS 3660.1
Collars, membrane and perimeter barriers installed before the pour across Penshurst, from unit sites near the station to knockdown rebuilds along Forest Road and King Georges Road.
Quick answer
Yes. A rebuilt or new home in Penshurst needs an NCC termite management system installed to AS 3660.1. Collars and any under-slab work go in after the plumber's rough-in and before the concrete pour. The durable notice for the meter box and an installation certificate for the Georges River Council certifier are both required before the Occupation Certificate is issued.
Termite barriers in Penshurst
Penshurst is in postcode 2222, about 15.5 km south-west of the CBD, and belongs to Georges River Council. Its housing is a mix of low and medium density, with the main shopping area wrapping around Penshurst station on the Illawarra line along Penshurst Street, Bridge Street and The Strand, and more businesses lining Forest Road and King Georges Road. The Penshurst RSL Club is a local hub, and Penshurst Park and the Hurstville Aquatic Leisure Centre sit on King Georges Road. Our work spans both walk-up unit sites near the station and knockdown rebuilds on the surrounding residential streets.
Two heritage items stand out here: the West Maling house on King Georges Road and the Penshurst Reservoirs on Laycock Road, both reminders of how long this stretch of Sydney's south has been settled and serviced. For a termite barrier, Penshurst is less about bush or open water and more about how a busy station suburb is put together. Two arterial roads carrying shops, a rail line, sports grounds such as Olds Park and McRaes Park, and a mix of houses and walk-up units all give a barrier different things to plan around depending on exactly where the block sits.
Reviewed by Ismail, founder · St George & Bayside coverage · Updated September 2026 · More St George & Bayside suburbs
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Local conditions
Three things shape termite risk in Penshurst, tied to its station-side density and its older heritage streets.
The shopping strip around Penshurst station brings dense, multi-dwelling infill close to the rail corridor, where a single slab can carry a higher number of penetrations. Collar counts and scheduling around the builder's program matter as much here as the barrier detail itself.
Forest Road and King Georges Road both run through the suburb with a mix of shops and housing along them. Rebuilds close to either road need the same careful slab edge and collar detailing as any other site, but scheduling access around busy traffic and street parking is part of planning the visit.
Away from the station and the arterial roads, Penshurst's low-density streets carry older homes with decades of established garden and ageing timber. Rebuilds on these blocks need soil treatment and the under-slab system treated as seriously as the perimeter.
What we install here
We work on Penshurst knockdown rebuilds on the established residential streets, walk-up unit and small multi-dwelling infill near the station, and granny flats behind existing homes closer to Penshurst Park. Waffle pod and raft slabs are standard on detached rebuilds, while multi-dwelling sites near the station need collar counts planned from the plans before we arrive. You get one fixed written quote covering every stage, and we attend around your builder's program so the barrier never holds up the pour.
Local knowledge
Our Penshurst work runs from the station precinct near Pole Depot Park, where dense infill and rail-corridor access shape the job, out toward the established streets near Rainbow Lorikeet Reserve, where mature trees can shelter termite and possum activity close to homes. Along Forest Road and King Georges Road, scheduling around traffic and street access is part of planning most visits.
Georges River Council certifies Penshurst building work, and before it will grant an Occupation Certificate it wants a durable notice fixed inside the meter box, plus a certificate from the installer naming the products, the coverage and their licence. We deliver both as soon as our stage of a Penshurst rebuild or unit development is done.
Penshurst at a glance
| Suburb | Penshurst, NSW 2222 |
|---|---|
| District | St George & Bayside |
| Distance from Sydney CBD | 15.5 km south-west |
| Certifying council | Georges River 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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Penshurst questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215The system is the same NCC-compliant barrier, but the job is scaled up. A shared slab near the station can carry more penetrations than a single house, so we plan collar counts and our attendance around the plumber and concreter's program for the whole site rather than one dwelling at a time.
Yes. Established residential streets away from the station carry decades of garden growth and ageing timber that can already be feeding activity nearby. We treat soil preparation and the under-slab system as seriously as the perimeter on a rebuild site like this. That groundwork gets checked before we finalise a price, since it changes how much soil treatment the job needs.
As soon as you have a rough slab date from the builder. Collars and any under-slab system need to go in after the plumber's rough-in and before the pour, and we plan our visit around access on busy arterial roads so the barrier install does not clash with street parking or traffic restrictions.
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.
