Penrith & the Outer West · AS 3660.1
Barriers detailed for bush gullies and sloping blocks near Florabella Pass and Pippas Pass, fitted before the pour on Blaxland new builds, rebuilds and extensions.
Quick answer
Yes, a new home or rebuild in Blaxland needs a termite management system under the NCC, because Blue Mountains Council's area is termite-prone. Collars and under-slab work must be completed before the pour, to AS 3660.1, and your certifier is given the durable notice plus installation certificate once the build reaches that stage.
Termite barriers in Blaxland
Blaxland sits at around 234 metres elevation on the Blue Mountains Line in the lower mountains, with its own station and a mostly residential town built around it. Bush gullies reached by walking tracks such as Florabella Pass and Pippas Pass run close behind many streets, so most of the building work here is new houses and rebuilds on blocks that back directly onto that bushland rather than cleared subdivisions. Blue Mountains Council certifies this work, and a compliant termite management system is called for before the Occupation Certificate, regardless of how established the surrounding bush is.
Living this close to bush changes what a barrier needs to deal with. Timber decks, garden sleepers and damp gullies suit subterranean termites, and colonies established in the bush behind a property forage into gardens and towards a new slab looking for the same entry points as anywhere else: a gap at a pipe penetration or an untreated edge. Getting the collars, membrane and perimeter installed properly before the pour is the best chance to close those routes off, because sub-floors and retaining walls on a sloping bush block are much harder to inspect and fix once the build is finished.
Reviewed by Ismail, founder · Penrith & the Outer West coverage · Updated September 2026 · More Penrith & the Outer West suburbs
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Local conditions
Three conditions specific to a bush-edged Blaxland block shape how we detail the barrier.
Florabella Pass, Pippas Pass and the gullies they follow keep the ground damp and full of leaf litter, conditions subterranean termites use to forage into nearby gardens, so blocks backing onto that bush get a full perimeter rather than a token strip.
Many Blaxland blocks need retaining and level changes to build on, and every step-down or retaining wall junction is a point where a barrier can be left with a gap if it is not detailed properly before the pour.
Decks, garden sleepers and other timber close to bush gullies stay damp for longer than in an open suburb, and damp timber close to the slab edge is exactly what a foraging colony is looking for, so we check these areas as part of the barrier plan.
What we install here
Blaxland work is mostly new houses and knockdown rebuilds on bush-edged or sloping blocks, with piers and suspended floors used where the land falls away towards a gully. Collars are fitted at every pipe and conduit penetration ahead of the pour, the perimeter is detailed around any retaining walls or step-downs, and sub-floor access on sloping sites is planned from the start. We quote every stage once from your plans, timed to your builder's program.
Local knowledge
Blocks near Glenbrook Lagoon Reserve sit against wetland and bushland where termites and other bush pests are well established, so those builds get the fullest perimeter treatment. Closer to Lennox Park and Blaxland station, sites are more open but still within reach of the same gully system, so the soil treatment and edge detailing matter across most of the town, not just the properties directly on the bush boundary.
Blue Mountains Council certifies Blaxland builds. A durable notice inside the meter box, plus an installation certificate outlining the products used, the areas protected and the licensed installer, are both required before the Occupation Certificate is issued. We supply both documents, complete with product data sheets and maintenance advice, timed to suit your other Blue Mountains approvals as they come through.
Blaxland at a glance
| Suburb | Blaxland, NSW 2774 |
|---|---|
| District | Penrith & the Outer West |
| Distance from Sydney CBD | 56.3 km west |
| Certifying council | Blue Mountains 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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Blaxland questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Yes, blocks close to gullies like Florabella Pass or Pippas Pass sit nearest established termite activity, so we generally recommend a full physical perimeter and careful detailing around any retaining walls, rather than a minimal system. The compliance standard is the same, but the risk on that boundary is higher.
Every retaining wall or step-down where the slab changes level is a junction that needs to be drawn and priced before we start, because that is where a hurried barrier most often leaves a gap. We detail these junctions the same way we detail a standard slab edge, so nothing is left to guesswork on site.
Yes, plenty of Blaxland blocks fall away towards a gully, and on those sites we design bearer protection, collars and the perimeter barrier around the piers and suspended floor rather than a slab edge. The certificate your certifier needs is the same document, adapted to describe that framing instead.
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 Penrith & the Outer West.
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.
