17 suburbs covered
Barrier work across 17 Hills District suburbs, from new estates at Beaumont Hills and Kellyville to cut-and-fill rebuild blocks in Castle Hill, Glenhaven and Baulkham Hills.
Quick answer
A new home anywhere in The Hills District needs a termite management system. The NCC requires one in termite-prone areas and AS 3660.1 sets the method, with collars and under-slab protection installed before the pour. The certifier holds the installation certificate and durable notice before granting the Occupation Certificate.
Barriers across the The Hills District
The Hills District covers 17 suburbs on this site, from the estate streets of Kellyville, Beaumont Hills and Stanhope Gardens to the large rebuild blocks of Castle Hill, Baulkham Hills and Glenhaven. It is a district of three build types running at once: volume-builder houses on new estate lots, substantial replacement homes on established acreage-style blocks, and townhouse or apartment sites gathered around the metro stations. All three need a compliant system, and all three are cheapest to protect while the slab is still open.
Terrain is what sets Hills work apart. Blocks are rarely flat, so pads are benched with retaining walls and step-downs to produce a level platform, and every one of those junctions is a point where a barrier can be left with a gap. Cattai Creek, Bidjigal Reserve and the bushland gullies that run between suburbs keep established timber close to back fences. The entry points on a slab never change, penetrations, the edge and the joints, so the detailing is drawn from the engineering plans before anyone orders concrete.
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Local conditions
Three conditions drive barrier detailing across The Hills District.
Sloping Hills blocks are benched to create a pad, leaving batters, retaining walls and step-downs. Each junction has to be followed by the barrier, which is why we price from the engineering drawings rather than the slab plan alone.
Cattai Creek, Bidjigal Reserve and the bushland between suburbs hold fallen timber and damp soil. Blocks on those fringes are treated as bush-adjacent, with continuous perimeters rather than partial treatment.
Semi-rural holdings rarely stop at the house. Sheds, studios, stables and garages each need their own collars and edge protection, quoted per structure so nothing is missed at certification.
What we install here
Work across the Hills runs from volume-builder estate homes through to large architect-designed replacements, granny flats, duplexes, townhouse rows and acreage outbuildings. Waffle pod and raft slabs are standard, with piers and suspended floors where blocks fall towards a gully. We collar every penetration, install the specified under-slab component, then complete perimeter and cavity protection as walls rise, detailing every retaining junction. Every stage is itemised in one fixed written quote.
Councils & certifiers
Most of the district is certified through The Hills Shire, with Kellyville Ridge and some northern streets falling to the City of Blacktown and pockets of Castle Hill to Hornsby Shire. We confirm which authority holds your approval when quoting, since the completion documents go to that certifier: a certificate covering the products, the protected areas and the installer, plus the durable notice fixed in the meter box with the inspection recommendation.
Our Hills run covers the estate streets around Kellyville, Beaumont Hills and Stanhope Gardens, the established blocks of Castle Hill and Baulkham Hills near Bidjigal Reserve and the Darling Mills Creek valley, and the metro precincts where townhouse and apartment slabs are concentrated. The closer a block sits to reserve or creek country, the more attention the perimeter and the retaining junctions get.
The Hills District
Every suburb has its own page with the local ground conditions, the councils that certify there and the questions builders ask us most.
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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The Hills District questions
Can't see your question? Call and talk it through with a licensed technician.
+61 450 515 215At the plan stage, before earthworks finish. Cut-and-fill leaves batters, retaining walls and step-downs that the barrier has to follow without leaving a gap, and those details are far cheaper to design on paper than to patch once formwork is up. Send the engineering drawings with the slab plan and the quote will cover them.
If the structure includes primary building elements that termites can damage, then yes, and on acreage that usually covers the shed, workshop, studio or stable as well as the house. We quote each structure separately so the cost is clear, and where pours are scheduled close together we cover them in a single visit.
The City of Blacktown, even though the suburb shares the Kellyville name and postcode. Most of the district is The Hills Shire, with parts of Castle Hill in Hornsby Shire. It makes no difference to the system, since the NCC requirement and AS 3660.1 apply either way, but it does determine where your paperwork goes.
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.
Slab pour coming up?
Send us your plans today for a fixed quote, or call and talk to a licensed technician about your site.
