Northern Beaches · AS 3660.1
Terrey Hills' nurseries and landscape yards along Mona Vale Road, postcode 2084, store mulch and timber that can shelter termites, and any new build here needs a barrier planned around that.
Quick answer
Yes, a new home or rebuild in Terrey Hills needs a termite management system under the NCC, since the suburb borders national park bushland in a termite-prone area. The system is installed to AS 3660.1 before the concrete pour, with collars fitted at every penetration. A durable notice for the meter box and an installation certificate for the certifier are both required before the Occupation Certificate.
Termite barriers in Terrey Hills
Terrey Hills is a leafy and partly semi-rural suburb about 20.7 km north of the CBD, in postcode 2084 and the Northern Beaches Council area, sitting high on the plateau along Mona Vale Road with Ku-ring-gai Chase National Park bordering it to the north and east. The suburb is known for horse agistment, and its commercial area has many nurseries and landscape suppliers, along with the Bureau of Meteorology's Sydney weather radar. Rebuild and new-build work here spans acreage properties, homes on larger tree-covered blocks and the occasional slab close to the commercial nursery strip itself.
Terrey Hills' nurseries and landscape yards store mulch, timber and plants, and that stored material can shelter termites, ants and spiders close to nearby homes, on top of the pressure that comes from bordering national park bushland directly. Homes on larger blocks surrounded by trees often see possums in roofs and funnel-webs in gardens, a reminder of how much genuine bush character remains here compared with suburbs further south. A barrier on a Terrey Hills property has to account for both the national park boundary and, on some blocks, the stored material from a nearby nursery or landscape yard.
Reviewed by Ismail, founder · Northern Beaches coverage · Updated September 2026 · More Northern Beaches suburbs
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Local conditions
Three local factors shape how we detail a barrier in Terrey Hills.
Terrey Hills' nurseries and landscape yards store mulch, timber and plants, and that stored material can shelter termites close to nearby properties. Blocks near a nursery or yard get extra attention to what's stacked or stored close to the boundary.
Ku-ring-gai Chase National Park borders Terrey Hills to the north and east, and homes on that side face steady termite pressure from established bushland colonies. These blocks get a full, continuous perimeter rather than a partial run.
Homes on Terrey Hills' larger blocks are often surrounded by trees, and possums in roofs and funnel-webs in gardens are a familiar sign of how much bush remains. That same tree cover holds moisture that suits subterranean termites too.
What we install here
Terrey Hills work spans new homes and rebuilds on acreage and larger tree-covered blocks, plus the occasional slab near the commercial nursery strip along Mona Vale Road. Waffle pod and raft slabs suit most residential sites, with suspended floors more common on larger rural-style blocks. We fit collars to every pipe and conduit penetration and run the perimeter to the true boundary, checking any nearby stored mulch or timber from adjoining nurseries before finalising a design, and we work to your builder's program throughout.
Local knowledge
Terrigal Reserve sits close to much of our Terrey Hills work, its leaf litter and shade a reminder of how much genuine bush remains this far from the coast. JJ Melbourne Hills Memorial Reserve adds further bushland that can support termites, funnel-webs and possums toward nearby homes. Shortees Golf, a little further out, keeps a stretch of turf irrigated, and across the suburb it's the combination of national park bushland and working nurseries that shapes almost every barrier we detail here.
Terrey Hills is certified through Northern Beaches Council, which asks for the same two records as any Sydney certifier: a durable notice in the meter box, and an installation certificate that lists the products, the areas covered and the licensed installer. We get both ready as soon as our stage of a Terrey Hills build finishes, acreage block or nursery-adjacent site alike.
Terrey Hills at a glance
| Suburb | Terrey Hills, NSW 2084 |
|---|---|
| District | Northern Beaches |
| Distance from Sydney CBD | 20.7 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
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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Terrey Hills questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215They can. Nurseries and landscape yards store mulch, timber and plants that can shelter termites close to nearby properties, so we check what's stored near the boundary before finalising a barrier for a build close to one of these businesses, adjusting the perimeter and collar positions to suit where needed.
Yes. Homes on the park boundary face steadier termite pressure than blocks well inside the suburb, because established bushland colonies can cross toward gardens and sub-floors. We run a full, continuous perimeter on these bushland-adjacent properties rather than a partial strip facing only the street frontage of the block itself.
Terrey Hills is certified through Northern Beaches Council. The certifier requires a durable notice in the meter box and an installation certificate naming the products, areas protected and licensed installer before your Occupation Certificate can be issued, and we supply both as soon as our stage of the job is complete.
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.
