The Hills District · AS 3660.1
Stanhope Gardens' first estate opened in the mid-1990s around what is now Stanhope Village, postcode 2768, and its original homes are now old enough to need fresh termite protection.
Quick answer
Yes, a new home, duplex or granny flat in Stanhope Gardens needs a termite management system under the NCC, since the suburb sits in a termite-prone part of Sydney. 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 Stanhope Gardens
Stanhope Gardens is a master-planned suburb in the City of Blacktown, postcode 2768, about 31 km north-west of the CBD. The first estate opened in the mid-1990s, and the Newbury Estate added a large number of homes through the following years, with most dwellings detached family houses on suburban blocks alongside a smaller number of townhouses. Stanhope Village is the local shopping hub, Blacktown Leisure Centre Stanhope provides pools, fitness facilities and a library, and the Stanhope T-way station links to Blacktown and Parramatta, with Kellyville metro station a short bus ride away. Our work here is a mix of granny flats, duplexes and knockdown rebuilds on the estate's original blocks.
Homes across Stanhope Gardens are now between roughly twenty and thirty years old, which puts many at the stage where original termite protection genuinely needs checking, garden beds have matured against the walls, and small gaps in eaves, garage doors and roof junctions have developed over time. Because the estates here were built fairly uniformly, similar issues tend to show up street after street, and a barrier approach that suits one home usually suits its neighbours too. A knockdown rebuild or granny flat on one of these blocks needs the existing ground checked given that history, rather than assumed to be a clean slate.
Reviewed by Ismail, founder · The Hills District coverage · Updated September 2026 · More The Hills District suburbs
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Local conditions
Three things shape how we detail a barrier in Stanhope Gardens.
Most Stanhope Gardens homes date from the estate's development in the mid-1990s onward, old enough that original termite protection needs checking. Because the housing is fairly uniform, similar conditions tend to appear across neighbouring blocks.
Decades of garden growth have brought plantings up hard against original brickwork on many Stanhope Gardens blocks. We check how close that growth sits to the walls before finalising a new barrier for a rebuild or extension.
Small gaps in eaves, garage doors and roof junctions have developed on many original estate homes over the years, a reminder of how much a full rebuild resets. The new termite management system replaces ageing protection with a current, compliant one.
What we install here
Stanhope Gardens work spans granny flats and secondary dwellings behind existing houses, duplex conversions on larger blocks, and knockdown rebuilds of the estate's original homes. Waffle pod slabs are standard on the suburb's flat estate ground. We fit collars to every pipe and conduit penetration and run the perimeter to the true boundary, checking existing garden conditions and any gaps that have developed in older homes nearby, and we work to your builder's program throughout.
Local knowledge
Blacktown Leisure Centre Stanhope sits close to much of our work here, its irrigated grounds a factor we account for on nearby blocks. Holstein Park adds established trees and leaf litter to the estate's residential streets. Glenwood Village Shopping Centre marks the suburb's retail edge, and with Parklea, Acacia Gardens, Glenwood and Kellyville Ridge all close by, Stanhope Gardens sits within a broader stretch of 1990s and 2000s development where similar barrier conditions apply right across the district.
Stanhope Gardens is certified through the City of Blacktown, and it asks for two things before an Occupation Certificate follows: a durable notice mounted in the meter box, and an installation certificate naming the products, the areas covered and the licensed installer. We prepare both the moment our stage of a Stanhope Gardens build, rebuild or granny flat is finished, so nothing on our side delays sign-off.
Stanhope Gardens at a glance
| Suburb | Stanhope Gardens, NSW 2768 |
|---|---|
| District | The Hills District |
| Distance from Sydney CBD | 30.8 km north-west |
| Certifying council | Sydney CBD 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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Stanhope Gardens questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Yes. Homes across the suburb are now between roughly twenty and thirty years old, which is the stage where original termite protection genuinely needs checking and small gaps in eaves and roof junctions have often developed. We assess existing conditions before recommending a new AS 3660.1 system for a rebuild.
Yes. A secondary dwelling is treated the same as a new home under the NCC, needing a compliant termite management system installed before the slab is poured, plus the durable notice and installation certificate for your certifier. We tie the new system into the main house's existing protection where the detailing allows.
Stanhope Gardens is certified through the City of Blacktown. Its Occupation Certificate process needs a durable notice fitted in the meter box and an installation certificate that lists the products, the treated areas and the licensed installer. We finalise both as soon as our stage of the granny flat, duplex or rebuild is done.
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 The Hills District.
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.
