Inner West · AS 3660.1
Collars, membrane and sub-floor detailing fitted to Petersham's mix of terraces and large Victorian and Edwardian homes, installed before the pour on rebuilds near New Canterbury Road.
Quick answer
Yes. A rebuilt terrace, mansion or extension in Petersham still needs a termite management system under the NCC, installed to AS 3660.1. Collars and membrane go in before the slab is poured, detailed around shared walls or the deep sub-floors of the suburb's older mansions. The durable notice and installation certificate then go to the Inner West Council certifier before occupation.
Termite barriers in Petersham
Petersham sits in postcode 2049, about 5.9 km south-west of the CBD, within the Inner West Council area. Terrace houses make up much of its housing, and there are also several large Victorian and Edwardian mansions built in the late 1800s and early 1900s. Shops and cafes run along New Canterbury Road and Audley Street, and the suburb is known as the centre of Sydney's Portuguese community, with a strong cluster of Portuguese restaurants. Petersham Park, the historic Petersham Town Hall, Petersham Reservoir and Petersham station are local landmarks, and our work covers rebuilds across both the terrace rows and the larger old homes.
Big old houses and tight terraces bring genuinely different termite jobs. The Victorian and Edwardian mansions tend to have deep sub-floors, large roof spaces and a lot of original timber, all of which suit termites that have had well over a century to establish if unchecked. The terrace rows share walls, so any activity in one house is effectively next door to the next slab we pour. We size the barrier to the building rather than running a standard job regardless of whether it is a single-storey cottage or a grand old mansion.
Reviewed by Ismail, founder · Inner West coverage · Updated September 2026 · More Inner West suburbs
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Local conditions
Three things make a Petersham barrier different from a standard suburban rebuild, tied to the age and size of the housing.
Petersham's Victorian and Edwardian mansions often have deep, spacious sub-floor areas and a lot of original structural timber, both dating back well over a century. A rebuild or major renovation on one of these homes needs the under-slab system and perimeter checked against that much older timber and footing work.
Petersham's terraces sit close together, sharing walls and in some cases roof space, so a colony established in one house sits right against the next property's footings. We detail the barrier hard against that shared wall junction rather than treating a terrace rebuild as an isolated slab.
Petersham Reservoir and the mature plantings of Petersham Park have sat close to residential streets for generations, and long-established green space like this can shelter termite activity that forages toward nearby gardens. Rebuilds near the park get the same perimeter attention as a bush-edge property.
What we install here
We work on Petersham terrace rebuilds, extensions and renovations to the suburb's larger Victorian and Edwardian homes, and granny flats where the block allows. Slabs on terrace sites are usually small and constrained by party walls, while mansion rebuilds often need a bigger under-slab system to match the larger footprint. You get one fixed written quote covering every stage, and we work around narrow-lot access and your builder's sequencing so the barrier is never what holds up the pour.
Local knowledge
Most of our Petersham work sits near Petersham station and Maundrell Park, where terrace rows and rail-corridor access shape the job, and around Petersham Park and the Fanny Durack Aquatic Centre, where mature old trees and irrigated grounds sit close to a number of the suburb's larger heritage homes. Toward Norton Plaza, sites are more often renovations on established terraces closer to the shops.
Inner West Council is the certifying authority for Petersham, and it will not sign off the Occupation Certificate without a durable meter-box notice and a certificate from the installer setting out the products, the coverage and the licence held. We prepare both as soon as our stage of a Petersham job, terrace or mansion, is complete.
Petersham at a glance
| Suburb | Petersham, NSW 2049 |
|---|---|
| District | Inner West |
| Distance from Sydney CBD | 5.9 km south-west |
| Certifying council | Inner West 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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Petersham questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215The NCC requirement is the same, but the detailing differs. The suburb's Victorian and Edwardian mansions often have deep sub-floors and a lot of original timber, so we check the under-slab system against that older structure, while terrace rebuilds are detailed more around shared party walls and a smaller footprint.
We detail the collars, membrane and any physical barrier hard against the party wall junction, since activity in a neighbouring terrace can already be pressing against those shared footings. Where the neighbouring property's protection is unknown, we flag that so you understand what pressure the new work might be facing.
Blocks close to the park's mature plantings and the old reservoir grounds get a fuller perimeter than a block with no nearby green space, because long-established trees and gardens can shelter termite activity that forages toward neighbouring yards. We check that boundary as part of the standard barrier plan. We treat that boundary the same way regardless of which era the neighbouring home dates from.
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 Inner 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.
