Northern Beaches · AS 3660.1
A termite system staged around your builder's program, whether you're building one of the new townhouse rows down in the Warriewood valley or rebuilding an older home closer to the beach and shops.
Quick answer
Yes. Wetlands and creek lines put Warriewood inside a termite-prone part of the Northern Beaches, so an Occupation Certificate here will not be issued without a compliant termite management system already in place. Built to AS 3660.1, that means collars on every penetration and the perimeter closed off before concrete is poured, with a certificate handed to your certifier once it's done.
Termite barriers in Warriewood
Warriewood sits about 21.6 km north of the Sydney CBD in postcode 2102, within the Northern Beaches Council area. Much of the suburb has changed since the NSW Government identified Warriewood Valley as a land release area, and the valley now carries large numbers of townhouses, semi-detached homes and apartments alongside older freestanding houses closer to the coast. Warriewood Square shopping centre and an industrial area sit to the south, and most of our work is new townhouse and house-and-land builds in the valley, alongside knockdown rebuilds on the older coastal streets.
Warriewood Wetlands protects several endangered ecological communities within the valley, and flood management works were built into the newer development to manage water across the site. That combination of wetland, creek lines and engineered drainage means ground conditions vary more across Warriewood than in a typical suburb, and damp soil near the wetlands is exactly what subterranean termites use to forage. New builds in the valley need their termite barriers and inspection zones kept intact through the flood works and landscaping stages, while older coastal homes need the more usual checks on sub-floors and timber closer to the salt air.
Reviewed by Ismail, founder · Northern Beaches coverage · Updated September 2026 · More Northern Beaches suburbs
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Local conditions
Three things shape termite risk across Warriewood, and they differ between the valley and the coast.
Warriewood Wetlands and the creeks that feed it keep soil in the valley damp well beyond the wetter months, and that moisture is what subterranean termites rely on to forage. New builds near the wetlands get a full perimeter system, with careful detailing around any flood management works on the block.
Warriewood Valley's townhouses and semi-detached homes share walls, garages and boundary fences, which means a single barrier detail has to be right across an entire row rather than one house at a time. We coordinate closely with the builder's program to keep the barrier consistent across each stage of the development.
Freestanding houses closer to Warriewood Beach are generally older than the valley's new stock, and salt air combined with garden moisture keeps timber and sub-floors damp. Rebuilds on these coastal blocks need the same close attention to soil treatment as the newer valley sites, just for different reasons.
What we install here
Warriewood work for us covers new builds and townhouse rows in the valley, knockdown rebuilds along the older coastal streets, and granny flats behind existing houses closer to the beach. Waffle pod and raft slabs suit the valley development, and collars go on once the plumbing rough-in is finished for each stage. Pricing is one figure from the plans, timed so no single lot in a townhouse run is left waiting on the others.
Local knowledge
Much of our Warriewood work sits in the valley near Shearwater Reserve and Warriewood Wetlands, where damp ground and protected vegetation keep termite and mosquito pressure up around new development. Towards the coast, Warriewood Beach and Pittwater Golf Centre mark the older, established part of the suburb, where rebuilds need the usual close look at sub-floors and salt-affected timber. Around Warriewood Square, food waste from the shopping centre and industrial area adds rodent pressure that we factor into new builds nearby.
Northern Beaches Council is the certifying body for Warriewood, and its Occupation Certificate process always calls for proof of a compliant termite system. That proof takes the form of a notice fixed permanently inside the meter box, paired with paperwork confirming the installer, the products and the specific areas treated. Both documents, along with data sheets and maintenance notes, are filed in time for your final inspection.
Warriewood at a glance
| Suburb | Warriewood, NSW 2102 |
|---|---|
| District | Northern Beaches |
| Distance from Sydney CBD | 21.6 km north |
| 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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Warriewood questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215For a staged development, we lock in each row against the builder's overall program rather than one lot at a time, so ask us to look at the full staging schedule early. Collars still follow the plumbing rough-in for each stage, but we plan the sequence so no lot's barrier is left half finished when its neighbour's slab is poured.
The wetlands keep the valley floor wetter for longer than most Sydney building sites, which suits subterranean termites well, so we don't scale back coverage just because a block sits within an engineered flood zone. If anything, we spend more time checking that flood management works haven't created a gap in the barrier once earthworks are finished.
Yes, and salt exposure changes what we look for compared with a valley build. Timber near the coast holds moisture longer, so sub-floor ventilation and drainage get a closer look, but the underlying requirements are the same: full collar coverage, a proper perimeter, and the paperwork your certifier will ask to see.
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.
