Termites in New South Wales: which species, and where the pressure runs highest
NSW is large enough that the termite picture changes from the coast to the tablelands to the western plains. The species involved and the rule for what to do about them do not.
The short answer for NSW
New South Wales carries some of the highest termite pressure of any state outside the tropics. One species does most of the damage: Coptotermes acinaciformis, found statewide from the coast to the inland plains. On the coast a second genus, Schedorhinotermes, adds to the load. It is often found later than it should be, because it does not always build the visible mud tubes people are told to look for.
None of that changes what evidence looks like or what you do with it. It changes how likely an attack is and roughly which genus is behind it, which matters for the inspector and not much for you.
Which species actually cause the damage in NSW?
Coptotermes acinaciformis is the main structural pest across the state. It builds a concealed central nest, often metres from the house, and forages through mud tubes and mud-packed galleries to reach timber. Finding a tube on a pier or a subfloor wall is the classic first sign. And it is also the species that most of the inspection industry in NSW is built around.
Schedorhinotermes is common along the coast and behaves differently. Its nest is diffuse rather than central, spread through several timber members instead of one location, so there is often no single tube to find. That is one reason coastal properties get flagged late: the colony can be well established before anything visible shows up.
Neither genus is something you identify yourself. That call is made from soldiers under magnification by a licensed inspector, not from a photo of a tube or a piece of damaged skirting.
Coast, tablelands and the west: pressure is not uniform
NSW is a big state, and the map does not read the same everywhere. Humidity, soil type and how established the local infrastructure of colonies is all shift the picture.
| Region | Pressure | What tends to be behind it |
|---|---|---|
| Sydney basin and coastal NSW | High | Coptotermes acinaciformis statewide, Schedorhinotermes common and often found late |
| Blue Mountains and tablelands | Moderate | Cooler and drier; colonies are present but slower to establish and forage |
| Western NSW and the Riverina | Moderate to high near water | Drought pushes colonies toward the one reliable moisture source around: a house |
That last line matters more than people expect. A dry season does not mean a quiet season. It often means the opposite. A house with a leaking tap, a garden bed against the slab or a poorly drained subfloor becomes the most attractive patch of ground for kilometres.
Why the housing stock adds to it
A lot of NSW's older suburbs were built before current termite management requirements existed. Many are brick veneer over timber frame, with weepholes, garden beds and paving that has crept up over the original clearance. None of that causes termites on its own. It removes the barriers that would otherwise slow a colony down, which is a conducive condition problem rather than a species problem.
Renovations compound it. A new deck, a garden bed added against the slab. Or paving laid over a weephole line can quietly bridge a barrier that was doing its job for twenty years, without anyone touching the barrier itself.
Does NSW require anything different for termite management?
For new building work, the National Construction Code sets the baseline, and the systems themselves are installed to AS 3660.1. States and territories can add their own variations to how that applies locally. Whether a particular requirement was triggered at a particular address is a question for the building surveyor or council that handled the approval. A blog cannot settle it for your street.
The same goes for anything touching a contract, a policy or a dispute. If you are buying, selling or making an insurance claim in NSW, that conversation belongs with your conveyancer, your insurer or the state's consumer affairs body. What we can tell you is the mechanism: what a termite management system does and does not cover. And why the durable notice in the meter box is proof of installation, not proof of current protection.
What doesn't change, wherever you are in NSW
The rule is the same on the coast, in the mountains and out west. If you find mud, a hollow-sounding skirting board or a pile of shed wings, leave it exactly as it is. Do not break it open, do not spray it, and do not pull the trim off to see how far it goes.
Disturbing an active workings makes the colony abandon that route and re-enter somewhere you are not watching. It destroys the evidence an inspector reads, and it wrecks the transfer effect that the non-repellent products a licensed technician uses depend on. A regular inspection to AS 4349.3 is what actually keeps pace with a state this size and this varied.
Frequently asked questions
Why does Sydney seem to have more termite problems than other capitals?
Partly climate, and partly age of housing stock. The Sydney basin is warm and humid enough for Coptotermes acinaciformis to forage hard most of the year, and a large share of the suburbs were built before current termite management requirements existed, so fewer properties have an installed barrier at all. Neither factor means every house is affected; it means the inspection matters more, not less.
Is western NSW really lower risk than the coast?
On average, yes, but not reliably so near any permanent water source or an irrigated property. Drought concentrates termite activity around whatever moisture is available, and a house with a leaking tap or a poorly drained garden bed can be more attractive to a colony in a dry inland town than an equivalent house on the coast.
Does having a termite management system mean my NSW house is protected forever?
No. A system installed to AS 3660.1 is a barrier or a monitoring and baiting network, and like any physical system it can be bridged by a new garden bed, a deck, paving laid too high, or simple age. The durable notice in the meter box records that a system was installed and to what standard; it says nothing about whether it is still intact today. That is what the annual inspection is for.
I found mud on a fence post in my NSW backyard. Does that mean my house has termites?
It means there is a colony active nearby, which is worth taking seriously, but it does not by itself mean the house is affected. Leave the mud undisturbed, do not spray it, and book a timber pest inspection that covers the house as well as the yard: a licensed inspector can tell you whether the activity has reached the structure.
Sources
What this page explains is based on these official sources. If you check one and it does not match what you read here, send it to us and the article gets corrected.
- Department of Health, Victoria. Pest control — termites
- Queensland Building and Construction Commission. Protect against termites — termite management systems and inspections
- Standards Australia. Australian Standards (AS 3660 termite management, AS 4349.3 timber pest inspection)
- Australian Building Codes Board. National Construction Code