The Hills District · AS 3660.1
From the farmland roots at Bella Vista Farm Park to the new towers around Norwest metro station in postcode 2153, every fresh slab here needs a termite barrier fitted before the concrete goes down.
Quick answer
Yes. Bella Vista sits within The Hills Shire in a termite-prone part of Sydney, so any new home, townhouse or apartment building needs a compliant termite management system under the National Construction Code. On multi-dwelling slabs near the metro stations that usually means collars across many penetrations. The finished system meets AS 3660.1, and its paperwork goes to the certifier before occupation.
Termite barriers in Bella Vista
Bella Vista is in The Hills Shire, about 28 km north-west of the Sydney CBD in postcode 2153, farmland until residential development began in the mid-1990s, and the homestead at Bella Vista Farm Park still recalls that history. Today the suburb mixes 1990s and 2000s family homes with newer townhouses and apartments clustered near the Bella Vista and Norwest metro stations, plus the offices, retail and hotels of Norwest Business Park and industrial warehouses in West Bella Vista. Current building work spans knockdown rebuilds of the older family homes, new multi-dwelling apartment and townhouse construction around the stations, and commercial slabs across the business park, each falling under its own version of the same termite management requirement.
That mix means genuinely different kinds of ground and construction sitting close together. Family home blocks need the usual attention to garden beds and established landscaping that decades of planting bring, while the newer apartment and townhouse sites near the metro stations are larger, more complex slabs with services for many dwellings running through them. Warehouses and offices in West Bella Vista and Norwest Business Park bring loading docks, staff amenities buildings and stored goods into the mix as well. We treat each site on its own terms, matching the barrier and any chemical soil treatment to what is actually being built rather than assuming one standard suburban approach.
Reviewed by Ismail, founder · The Hills District coverage · Updated September 2026 · More The Hills District suburbs
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Local conditions
Bella Vista's mix of old farmland, family homes and new towers each bring their own termite considerations.
Apartment and townhouse buildings near the Bella Vista and Norwest stations mean a single slab can carry services for dozens of dwellings, each penetration needing its own collar before the pour. Missing one on a shared slab compromises the whole building's protection, so scheduling and collar counts drive the job here.
Bella Vista's original family homes date from the mid-1990s onward, and a knockdown rebuild on one of those blocks often follows decades of garden beds and established planting. That material has to be accounted for in soil preparation ahead of the new slab, not just covered over by fresh concrete.
Norwest Business Park and the industrial warehouses of West Bella Vista bring office buildings, loading docks and staff amenities into the mix, and any residential-class structure on those sites still needs a termite management system. We check the building classification on the plans before quoting so the right standard applies.
What we install here
Bella Vista jobs range from knockdown rebuilds of 1990s and 2000s houses to new townhouse and apartment slabs near the Bella Vista and Norwest metro stations, plus staff amenities buildings on the industrial and business park sites in West Bella Vista. Multi-dwelling work means collar counts and coordination with other trades drive the schedule, while family home rebuilds are smaller and more straightforward. We fit collars to every penetration, run the perimeter to the actual footing, and schedule our visit for once each plumber's rough-in is done and ahead of the relevant pour across every type of Bella Vista site.
Local knowledge
Bella Vista Farm Park preserves the homestead and farmland history the suburb grew out of, and its grounds are a reminder of how much of the area was open paddock before the 1990s development began. Rowanbrae Reserve sits closer to the residential streets, its mulch and leaf litter giving a sense of the established gardens found on the older family blocks. Castle Hill Country Club, a little further out, keeps large areas of irrigated turf nearby, adding moisture to the ground around some of the suburb's older streets.
Bella Vista is certified through The Hills Shire, and on multi-dwelling apartment and townhouse buildings the paperwork needs to reflect the whole slab: a durable notice in the meter box, and an installation certificate naming the products, the areas protected and the licensed installer. We prepare it as soon as our stage of the work is complete, whether the job is a single family home or a larger multi-unit building near the metro stations.
Bella Vista at a glance
| Suburb | Bella Vista, NSW 2153 |
|---|---|
| District | The Hills District |
| Distance from Sydney CBD | 28.0 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
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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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Bella Vista questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215The requirement under the National Construction Code is the same, but the scale is different. A multi-dwelling slab near the metro stations can carry far more plumbing and services penetrations than a single house, so collaring every one becomes the main task alongside running a continuous perimeter around a much larger footprint, with paperwork covering the whole building for The Hills Shire's certifier.
Not directly, since the rebuild is treated as new construction under the National Construction Code regardless of when the original house was built. What does matter is what the block has accumulated since, decades of garden beds and landscaping that can affect soil preparation, so we assess the site itself before recommending which system suits it best.
If it is a residential-class building, such as staff accommodation or amenities with the relevant classification, yes, it needs a termite management system the same as a house would. Standard warehouse and office space is treated differently, so we check the building classification on your plans before confirming whether AS 3660.1 applies to your project.
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.
