Blacktown & Mount Druitt · AS 3660.1
Collars, under-slab membrane and perimeter barriers installed to the builder's program across Riverstone's new estates, on former farmland with a long history of flooding near Marsden Road.
Quick answer
Yes. A new home or rebuild in Riverstone needs an NCC termite management system installed to AS 3660.1. Collars and any under-slab work go in after the plumber's rough-in and before the concrete pour. The durable notice for the meter box and an installation certificate for the City of Blacktown certifier are both required before the Occupation Certificate is issued.
Termite barriers in Riverstone
Riverstone is one of the oldest towns in Australia, beginning as a government stock farm in 1803. It sits in postcode 2765, about 38.4 km north-west of the CBD, in the City of Blacktown. The railway arrived in 1864, a large meatworks operated from 1878 until 1992, and the station, station residence and several church buildings are heritage-listed. Riverstone stayed a small country town until housing growth reached it this century, and large areas of former farmland have been released for new estates, with an industrial area remaining on the northern side alongside poultry farms and market gardens.
Floods are part of local history here, including major floods in 1867 and 1961, and in 2021 some homes along Marsden Road were submerged. Low, wet ground like this raises termite pressure as much as flood risk, since damp soil gives subterranean termites easier movement toward a slab. Poultry farms, market gardens and industry to the north support rodents and other pests, while new estates on former farmland bring the more familiar pressure of fast-arriving landscaping and irrigation close to a fresh slab. We ask whether a specific block has flooded previously before finalising the plan for its barrier.
Reviewed by Ismail, founder · Blacktown & Mount Druitt coverage · Updated September 2026 · More Blacktown & Mount Druitt suburbs
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Local conditions
Three things shape termite risk in Riverstone, tied to its flood history and its shift from farmland to new estates.
Major floods in 1867, 1961 and 2021 show that low ground around Riverstone holds water for extended periods. Ground that floods also stays damp for longer afterward, and that moisture makes it easier for subterranean termites to move toward a slab, so drainage and the slab edge get extra attention here.
Large areas of former farmland have only recently been released for new housing, and land that grew crops or grazed stock for well over a century can carry old root systems and disturbed soil. We check the ground on these sites and treat it properly ahead of the under-slab system.
The industrial area, poultry farms and market gardens on the northern side of the suburb bring a different kind of pest pressure to nearby new estates. We factor that proximity into the barrier plan on properties close to this working land.
What we install here
We work on Riverstone new house-and-land builds across the recently released estate stages, plus knockdown rebuilds on the older streets near the heritage station precinct. Waffle pod and raft slabs are standard here, with drainage detailing playing a bigger role than in higher, drier suburbs nearby. You get one fixed written quote from the plans, and we attend in stages so a barrier visit never holds up a pour. We ask about flood history on the specific block before pricing the job.
Local knowledge
Most of our Riverstone work sits near the heritage station precinct and Mill Street Reserve, where established trees and shaded ground shelter activity close to older homes, and across the newer estate stages further from the town centre, where drainage and slab edge detailing matter most given the suburb's flood history. We check flood history and drainage on every estate block individually before finalising the barrier plan for that property.
Before it will issue an Occupation Certificate for a Riverstone property, the City of Blacktown wants a durable notice fixed inside the meter box and a certificate from the installer naming the products, the coverage and their licence. We deliver both as soon as our stage of an estate build or an older-street rebuild is finished.
Riverstone at a glance
| Suburb | Riverstone, NSW 2765 |
|---|---|
| District | Blacktown & Mount Druitt |
| Distance from Sydney CBD | 38.4 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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Riverstone questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Yes. Ground that has flooded, including areas affected in 1867, 1961 and 2021, tends to stay damp for longer afterward, and that moisture makes it easier for subterranean termites to move toward a slab. We detail drainage falls and the slab edge more carefully on properties in these lower-lying areas.
Often yes. Land that grew crops or grazed stock for generations before being released for housing can carry old root systems and disturbed soil, which can feed termite activity before a new slab is poured. We check the soil on these newer estate blocks and treat it properly ahead of the under-slab system.
As soon as you have a rough slab date from the builder. Collars and any under-slab system must go in after the plumber sets out the services and before the pour, and on active estate stages we coordinate closely with the site supervisor so our visit lines up with the wider construction schedule.
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 Blacktown & Mount Druitt.
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.
