St George & Bayside · AS 3660.1
Collars, membrane and perimeter barriers fitted before the pour for Allawah 2218 rebuilds and unit sites on the quieter streets around the Illawarra line station.
Quick answer
A new home or unit block in Allawah needs a termite management system, since Georges River Council sits within a termite-prone stretch of Sydney and will not issue an Occupation Certificate without one. The NCC ties this to AS 3660.1, with the work completed before the slab is poured. Once done, the certifier receives the meter-box notice and matching installation paperwork.
Termite barriers in Allawah
Allawah is a small, landlocked suburb in postcode 2218, about 14.6 km south-west of the CBD in the Georges River Council area, sitting on the Illawarra line between Carlton and Hurstville. Its compact shopping strip on Railway Parade faces the station, which opened in 1925, and much of the suburb is a short walk from Hurstville's larger shops. Detached homes on the quieter residential streets see a steady mix of knockdown rebuilds and renovations, while blocks closer to the station and Hurstville support ongoing unit and townhouse development going up around them.
Because Allawah has no river frontage or large bush reserve of its own, most of what a barrier has to guard against here comes from the built environment and the age of the housing stock rather than the surrounding landscape. Sub-floors, garden beds and old timber fences on the detached streets give termites the same quiet entry points they look for regardless of postcode, and a new slab close to an old fence line or garden bed needs the same careful perimeter work as anywhere else. We plan the barrier around what each specific block is built on, house or unit block alike.
Reviewed by Ismail, founder · St George & Bayside coverage · Updated September 2026 · More St George & Bayside suburbs
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Local conditions
Three conditions on an Allawah block shape how the barrier is planned.
The quieter residential streets furthest from Railway Parade see steady rebuild and renovation activity on older detached homes. Demolition on these blocks often uncovers old timber fences and garden beds that need to be accounted for in the soil treatment.
Blocks closer to the station and Hurstville's shops support unit and townhouse development, often on a single larger slab with more penetrations than a standalone house. Collar counts and sequencing matter more on these sites than on a single detached home.
Without a reserve or river frontage of its own, Allawah's termite pressure comes mainly from established garden beds and ageing timber on the older blocks rather than a single obvious boundary. We assess each site on its own landscaping and construction rather than a suburb-wide assumption.
What we install here
We work on Allawah new homes, knockdown rebuilds on the quieter detached streets and unit or townhouse slabs closer to the station. Waffle pod and raft footings suit the flat, compact blocks typical here, and installation is fitted to the plumber's rough-in date so no penetration is left uncollared once the pour is booked. Pricing is a single fixed figure from the plans, timed to your builder's program rather than a rough estimate on the day.
Local knowledge
Work near Allawah station and the Railway Parade shopping strip is often a unit or townhouse slab, where the scale of the pour and the number of penetrations drive the schedule. On the quieter streets further from the station, jobs are more often a standard rebuild or renovation slab on a detached block. Augusta Park adds a small pocket of garden ground near the suburb centre, and old garden beds like it are the most common local entry point we check for on rebuild sites.
Georges River Council certifies Allawah builds, and the requirement before an Occupation Certificate is issued is the same standard pair: a durable notice permanently fixed in the meter box recording the installed system, and an installation certificate setting out the products used, the protected areas and the installer's licence. We complete both on installation day and provide them with product information and maintenance advice, ready for your certifier's file.
Allawah at a glance
| Suburb | Allawah, NSW 2218 |
|---|---|
| District | St George & Bayside |
| Distance from Sydney CBD | 14.6 km south-west |
| Certifying council | Georges River 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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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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Allawah questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215Not a different system, just a bigger job: a unit block slab usually has more penetrations and shared services than a single house, so collar counts and sequencing get planned around the whole pour rather than one dwelling at a time. Each unit still needs coverage confirmed in the same installation certificate.
We look for old timber fences, garden beds and any sub-floor remnants from the previous house, since that material can carry termite activity toward a new slab if it is not treated properly first. Every rebuild site gets a full soil and under-slab assessment before we price the barrier work.
As soon as the plumbing rough-in is scheduled. Collars need to go on every penetration across the whole slab before the pour, so we lock our visit in carefully around the plumber and concreter for multi-dwelling sites, exactly the same way as we would for any single new house we quote.
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 St George & Bayside.
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.
