Sutherland Shire · AS 3660.1
AS 3660.1 termite barriers for Cronulla apartment developments, bayside rebuilds and infill sites between Gunnamatta Bay, Port Hacking and Cronulla Beach, postcode 2230, in the Sutherland Shire.
Quick answer
Sitting on a termite-prone peninsula administered by the Sutherland Shire, Cronulla falls squarely within the National Construction Code requirement for a termite management system on every new home, rebuild or unit development. AS 3660.1 governs installation, completed ahead of the pour. Before the Occupation Certificate is granted, the certifier must be handed a durable notice for the meter box plus a completed installation certificate.
Termite barriers in Cronulla
Cronulla occupies a peninsula in the Sutherland Shire, about 21.6 km south of the Sydney CBD in postcode 2230, with Botany Bay to the north, the surf beaches of Bate Bay to the east, Port Hacking to the south and Gunnamatta Bay to the west. Most people here live in flats and apartments rather than houses, and the shopping and dining centre runs along Cronulla Street, including the pedestrian Cronulla Plaza. The Cronulla line ends at Cronulla station, and ferries leave Gunnamatta Bay for Bundeena. With so much of the peninsula already built out, new termite barrier work here is mostly apartment and unit development, along with knockdown rebuilds of the remaining houses on the bay side.
Being surrounded by water on three sides gives Cronulla a particular set of ground conditions for barrier work. Salt air and humidity from the ocean and the bays keep sub-floors and wall cavities damp for long periods, which is the kind of moisture subterranean termites need to establish. Houses on the bay side and near foreshore reserves like Gunnamatta Foreshore Bushland Reserve sit closer to bushland edges than the apartment-dominated centre of the suburb, and apartment buildings themselves bring shared car parks, service ducts and multiple penetrations on the one slab. We treat each building type on its own terms, from a single bayside rebuild to a large multi-unit development.
Reviewed by Ismail, founder · Sutherland Shire coverage · Updated September 2026 · More Sutherland Shire suburbs
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Local conditions
Three features of Cronulla's peninsula setting shape how a barrier gets detailed there.
Botany Bay, Bate Bay, Port Hacking and Gunnamatta Bay surround Cronulla, and the salt air and humidity that comes with that keeps sub-floors and cavities damp for much of the year. That moisture is what lets subterranean termites move through the ground, so we plan a full system rather than a minimal edge strip.
Gunnamatta Foreshore Bushland Reserve sits close to homes on the bay side of the peninsula, and bushland edges like this can carry established termite activity into nearby gardens. Bayside rebuild sites get closer perimeter attention than blocks nearer the ocean beach.
With most Cronulla residents living in flats and units, a large share of new barrier work is on multi-dwelling slabs with shared car parks and service ducts. Each of these needs collars matched to every penetration and one certificate covering the whole building.
What we install here
We work on Cronulla apartment and unit developments, bayside knockdown rebuilds and infill townhouse sites, reflecting how much of the peninsula is already built out. Waffle pod and raft slabs suit most sites, with suspended floors more common on older bayside blocks near the foreshore. On multi-dwelling developments we plan collar counts against every unit sharing the slab and stage our visit around the plumber and concreter so it does not hold up a tightly programmed apartment build.
Local knowledge
Cronulla Beach, about 0.4 km from the suburb centre, and Cronulla station, about 0.2 km away, sit close to much of the built-up centre of the peninsula. Gunnamatta Foreshore Bushland Reserve, about 0.1 km away, and Monro Park, also about 0.1 km away, are the green pockets closest to bayside rebuild sites, with the foreshore reserve in particular bringing bushland-edge conditions to homes on that side of the suburb. Cronulla Golf Course adds another stretch of irrigated turf and water to the wider picture.
The Sutherland Shire is Cronulla's certifying council. It requires proof of the termite work before granting the Occupation Certificate: a durable notice fitted in the meter box, and an installation certificate listing products, protected areas and the installer. Apartment developments need this certificate to cover every dwelling sharing the one slab, so we draft it against the approved plans and provide it along with product data and maintenance notes, keeping the paperwork in step with a tight build program.
Cronulla at a glance
| Suburb | Cronulla, NSW 2230 |
|---|---|
| District | Sutherland Shire |
| Distance from Sydney CBD | 21.6 km south |
| Certifying council | Across Sutherland Shire |
| 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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Cronulla questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215The AS 3660.1 requirement applies either way, but a multi-unit development needs collars matched to every plumbing penetration across the shared slab and one installation certificate covering the whole building. A single bayside rebuild is a more straightforward perimeter and under-slab system sized to that one property, with less coordination needed across other trades.
Cronulla is surrounded by Botany Bay, Bate Bay, Port Hacking and Gunnamatta Bay, and the salt air and humidity that comes with that keeps sub-floors and cavities damp for much of the year. That moisture is favourable ground for subterranean termites, so we plan a full system on Cronulla builds rather than a minimum edge strip.
Yes, Gunnamatta Foreshore Bushland Reserve sits close to homes on the bay side of the peninsula, and bushland edges like this can bring established termite activity into nearby gardens. Rebuild sites near the reserve get the same full perimeter attention as any bushland-fringe block, with less emphasis needed on the drier, more built-up ocean side.
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 Sutherland Shire.
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.
