Northern Beaches · AS 3660.1
Barriers detailed for steep, palm-covered blocks between the surf club and the Bilgola Bends, with collars and perimeter work fitted before the pour on every build stage.
Quick answer
Yes, a new home or rebuild in Bilgola Beach needs a termite management system, because Northern Beaches Council's whole area counts as termite-prone. To AS 3660.1, collars go on and any under-slab work is completed before the concrete truck arrives, and the durable notice with installation certificate goes to your certifier ahead of the Occupation Certificate.
Termite barriers in Bilgola Beach
Bilgola Beach sits on the ocean side of the Barrenjoey Peninsula between Avalon Beach and Newport, created as its own suburb in 2012 when the old Bilgola was split into Bilgola Beach and Bilgola Plateau. Development is limited by the terrain, so most building work is on houses on steep, heavily vegetated blocks reached from winding roads such as the Bilgola Bends, rather than flat subdivided estates. Northern Beaches Council certifies these builds, and a termite management system is required whether the job is a full rebuild, an extension or a new house on a vacant block.
Dense cabbage tree palms and native trees keep the ground shaded and damp on most Bilgola Beach blocks, sub-floors on sloping sites are often hard to reach once the build is finished, and ocean spray adds moisture to timber close to the coast. That combination suits subterranean termites, which is exactly why the barrier has to be planned around the slope and the access before the slab goes in. Once the framing is up, collars and edge detailing on a steep site are far harder and more expensive to get right.
Reviewed by Ismail, founder · Northern Beaches coverage · Updated September 2026 · More Northern Beaches suburbs
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Local conditions
Three conditions on a Bilgola Beach block change how we detail the barrier.
Cabbage tree palms and dense native vegetation keep the ground shaded and damp on most blocks here, conditions subterranean termites favour, so the perimeter and any under-slab work needs to be planned before access gets harder as the build rises up the slope.
Ocean spray off Bilgola Beach adds moisture to decks, sub-floors and window frames, and damp timber close to the coast is more attractive to termites, so we detail those areas as carefully as the slab edge itself.
Narrow, winding streets such as the Bilgola Bends mean site access and truck movements need to be planned early, so the barrier visit is booked around the same access constraints your builder and concreter are already working with.
What we install here
Bilgola Beach work is mostly new houses and rebuilds on sloping, vegetated blocks, with piers and suspended floors common where the site falls away. Every plumbing and conduit penetration is fitted with a collar before the pour, the perimeter and any chemical treatment go in as the walls rise, and sub-floor access on a steep block is planned from the start. Your plans get one quote covering every stage, timed to your builder's program.
Local knowledge
Builds close to Eric Green Reserve sit right against bushland, so termites and other pests have a direct route into the garden and the perimeter there needs full coverage rather than a token strip. Blocks nearer the beach itself pick up more salt air, which keeps timber and sub-floors damper for longer. Either way, the plan for the barrier is drawn around the slope and the vegetation before we start.
Northern Beaches Council certifies Bilgola Beach builds. Two documents come before the Occupation Certificate: a durable notice attached inside the meter box, and an installation certificate covering the products used, the areas treated and the licensed installer. We hand both over with product data sheets and maintenance advice, so the whole paperwork trail sits alongside your other council approvals, ready to go.
Bilgola Beach at a glance
| Suburb | Bilgola Beach, NSW 2107 |
|---|---|
| District | Northern Beaches |
| Distance from Sydney CBD | 27.2 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
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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Bilgola Beach questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Often yes. Sloping, palm-covered blocks favour termites because the ground stays shaded and damp, and sub-floors can be harder to inspect once the build is finished, so many owners choose a physical barrier plus a reticulation line so the treated zone can be topped up later without digging up finished landscaping.
Narrow, winding roads mean deliveries and equipment need to be planned in advance, so we book the barrier visit around the same access windows your builder and concreter are using. Collars and membrane still need to go in after plumbing rough-in and before the pour, regardless of how the site is accessed.
Salt air itself does not attract termites, but it keeps timber, decks and sub-floors damper for longer near the coast, and damp timber is more attractive to a foraging colony. We detail those areas with the same care as the slab edge and recommend regular inspections once the build is finished.
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.
