Sutherland Shire · AS 3660.1
Collars, membrane and perimeter barriers for Jannali 2226 builds, whether the block backs onto Jannali Reserve or sits in the streets above Railway Crescent.
Quick answer
New homes at Jannali require a termite management system under the National Construction Code, installed to AS 3660.1. The work is staged: collars and under-slab protection before the pour, perimeter as walls go up. Your certifier needs the installation certificate and the durable notice before granting the Occupation Certificate.
Termite barriers in Jannali
Jannali sits about 21 km south-west of the city in the Sutherland Shire, its streets threaded between housing and bushland reserve. Jannali Reserve runs along the western edge, with smaller pockets such as Charles Orwin and Alice Street reserves closer in, and the station, open since 1931, splits the suburb in two. Detached houses on leafy blocks make up most of the housing, so building activity here is mainly knockdown rebuilds, granny flats behind existing homes and the occasional dual occupancy near the shops on Box Road and White Street.
Those reserves are the reason barrier detailing matters on a Jannali site. Bushland pockets hold fallen timber and stumps that sustain subterranean colonies a short forage from the nearest back fence, and gardens on established blocks add decades more buried material. When a new slab goes down, the colony does not need to travel far to test it. Collars at every service, a protected edge and a continuous perimeter close the concealed routes, and all of that has to be in place before the concrete truck books in.
Reviewed by Ismail, founder · Sutherland Shire coverage · Updated September 2026 · More Sutherland Shire suburbs
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Local conditions
Three local factors drive the design of a Jannali barrier.
Jannali Reserve and smaller pockets like Alice Street Reserve sit within a couple of hundred metres of many blocks. Established bush that close means steady foraging pressure, and perimeters get run continuously rather than in sections.
Ground here often falls away, so pads are benched and step-downs are common. Every change in level is a junction the barrier must follow, and those are the points worth drawing before the formwork is set.
Replacement homes go up on blocks planted for fifty years or more. Old stumps, timber edging and deep beds leave food in the soil, which is why under-slab protection matters as much as the edge.
What we install here
Jannali projects are mostly single dwellings, secondary dwellings and duplex sites. We fit collars to every pipe and conduit passing through the slab, install a membrane or treated zone under the footprint depending on the design, then complete the perimeter and cavity work as the walls rise. Suspended floors and piers get their own treatment where the block falls towards the reserve. Pricing is fixed from the plans and split by stage, and attendances are timed to the plumber and concreter so nothing on site waits on us.
Local knowledge
Work here clusters around the station precinct, barely a hundred metres from the shops on Railway Crescent, and spreads through the streets near Alice Street Reserve and out towards Ninth Avenue Reserve about a kilometre away. Blocks fronting or backing reserve country get the closest attention at the perimeter, while the tighter sites near the station and bridge tend to be duplex or secondary-dwelling jobs where access and staging shape the schedule more than the footprint does.
Sutherland Shire Council certifies building work at Jannali. The certifier will not sign off an Occupation Certificate without evidence of the termite management system, which means two documents from us: an installation certificate detailing products, protected areas and installer, and a permanent meter box notice recording the system and its recommended inspection frequency. Both are supplied together with product information and maintenance advice for the owner.
Jannali at a glance
| Suburb | Jannali, NSW 2226 |
|---|---|
| District | Sutherland Shire |
| Distance from Sydney CBD | 21.2 km south-west |
| Certifying council | Across Sutherland Shire |
| 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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Jannali questions
Still unsure? Call and talk it through with a licensed technician.
+61 450 515 215The perimeter treatment becomes the priority and it runs the full boundary of the slab rather than only the exposed faces. Where the block steps down towards the bush, we detail each level change so there is no gap at the junction, and we usually recommend a reticulation line if paving or garden beds will later cover the treated soil.
Yes, and it is treated as its own structure. The secondary dwelling gets collars on every penetration, an under-slab or perimeter system suited to its slab, and its own certificate and durable notice. Where the main house already carries protection, we tie the new work into it wherever the detailing allows rather than leaving two unconnected systems.
Once the slab date is roughly known. The collar and under-slab stage must follow the plumber's set-out and finish before concrete arrives, and on sloping Shire blocks the step-down detailing takes longer than a flat pad. Giving us a week or two of notice means the stage can be slotted in without pushing your pour.
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 Sutherland Shire.
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.
