Northern Beaches · AS 3660.1
Termite barriers fitted before the pour on Collaroy Plateau rebuilds along the ridge, where native banksias and wattles surround houses looking down over Long Reef and Narrabeen Lagoon.
Quick answer
Yes, a new home or rebuild on Collaroy Plateau needs a compliant termite system as part of the build, not as an afterthought. The ridge sits in a termite-prone part of Sydney's northern beaches, so AS 3660.1 detailing is required, with collars fitted and any perimeter work finished before the pour. Northern Beaches Council then needs the meter box notice and installer's paperwork before it will release an Occupation Certificate.
Termite barriers in Collaroy Plateau
Collaroy Plateau is an elevated residential suburb in postcode 2097, about 17.2 km north-east of the Sydney CBD, under Northern Beaches Council. It became a separate suburb from Collaroy in 2011 after local lobbying, and from its ridge homes overlook Collaroy Beach, Long Reef, Narrabeen Beach and Narrabeen Lagoon. The suburb holds a trig station, the site of a Second World War radar station, Plateau Park, McLeans Lookout and the Edgar Gornall Wildflower Garden, and native dry sclerophyll vegetation, banksias, waratahs, wattles and tea-trees, is common across the ridge. New work here is mostly a knockdown rebuild or an extension on an established ridge-top block, since the suburb is fully settled, and every one of those projects still needs its own termite management system before the certifier will look at it.
The high ground and the remaining native vegetation are what shape termite risk on Collaroy Plateau, more than the ocean does. Gardens planted with natives or backing onto remnant bush can harbour termite colonies, since banksias, wattles and tea-trees are exactly the kind of vegetation subterranean termites forage through. Homes on the ridge face wind and driving rain, while those lower on the slopes toward Collaroy and Narrabeen often have sub-floors and retaining walls where moisture collects after storms. Streets here are mostly standalone houses rather than units, so a barrier usually has to cover the whole property, roof to garden edge, rather than a single shared slab.
Reviewed by Ismail, founder · Northern Beaches coverage · Updated September 2026 · More Northern Beaches suburbs
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Local conditions
Three things set termite risk on Collaroy Plateau apart from the beachfront suburbs below it.
Banksias, wattles and tea-trees common across Collaroy Plateau's gardens and remnant bushland are the kind of vegetation subterranean termites forage through naturally. Blocks backing onto denser native planting or bushland get a more thorough perimeter than an open, cleared block.
Where a Collaroy Plateau block falls away from the ridge toward Collaroy or Narrabeen, retaining walls and stepped footings are common, and moisture collects at those junctions after storms. Each one needs to be detailed on the barrier plan before the concrete is poured.
Unlike the denser streets closer to the beach, Collaroy Plateau is mostly standalone houses, so a termite management system typically has to run the whole way around the building rather than covering a single shared slab. We measure the actual perimeter from the plans rather than estimating.
What we install here
Collaroy Plateau work is almost entirely knockdown rebuilds and extensions on established ridge-top blocks, since there is little vacant land remaining on the plateau. Waffle pod and raft slabs suit the flatter sections of the ridge, while piers and suspended floors are more common where a block steps down toward Collaroy or Narrabeen. We schedule collars and any perimeter work around your plumber's rough-in and your builder's pour date, with particular attention to retaining walls on sloping sites, all priced in one fixed written quote from the plans.
Local knowledge
Augusta Shopping Centre and the Edgar Gornall Wildflower Garden anchor most of our work on the ridge, where dense native planting gives ants, spiders and the occasional colony of termites a foothold close to nearby homes. Plateau Park and the ridge lookouts overlooking Long Reef and Narrabeen Lagoon mark the high point of the suburb, while streets sloping down toward Collaroy Beach, about a kilometre away, see more moisture collecting around retaining walls and stepped footings.
Northern Beaches Council certifies Collaroy Plateau builds, and before releasing an Occupation Certificate it wants a weatherproof notice fitted inside the meter box naming the termite system, along with a signed certificate recording the products used and the licence of the installer. Where a ridge site involves a retaining wall or a suspended floor, we describe that detailing on the certificate too, so it lines up with what the engineer drew.
Collaroy Plateau at a glance
| Suburb | Collaroy Plateau, NSW 2097 |
|---|---|
| District | Northern Beaches |
| Distance from Sydney CBD | 17.2 km north-east |
| Certifying council | Northern Beaches 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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Collaroy Plateau questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Banksias, wattles and tea-trees are part of the natural dry sclerophyll vegetation across the plateau, and subterranean termites forage through that kind of planting as a normal part of the local ecosystem. It does not mean you cannot have a native garden, but blocks backing onto denser bush usually get a more thorough perimeter, and we plan garden beds and mulch placement around the barrier rather than against it.
Where a block steps down from the ridge, retaining walls and stepped footings add junctions to the barrier that a flat, single-level block never has, and moisture collecting behind a wall after storms can support termite activity right at that joint. We mark every step-down and wall junction on the plan first and work to that, rather than making decisions on the day of the pour.
No, the risk drivers differ even though the suburbs are neighbours. Collaroy's beachfront blocks deal with salt spray and storm-disturbed ground, while Collaroy Plateau's risk comes mainly from native vegetation and the retaining walls needed on its sloping, elevated blocks. We assess each property on its own conditions rather than applying the same system across both suburbs.
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 Northern Beaches.
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.
