Builder-Side Termite Protection — What's Required Under NCC Part 3.4 in NSW

Every new residential building in NSW is legally required to have a termite management system. The requirement is in the National Construction Code, and it applies to every new build in the state — regardless of whether the builder, owner-builder, or certifier brings it up at the right time.

This piece is for builders and owner-builders: what the NCC actually requires, what complying with it looks like in practice, what the durable notice requirement involves, and where a pest specialist fits in the construction sequence.

What the NCC actually says

The relevant section is NCC Volume 2 (Housing Provisions) Part 3.4, which covers termite risk management for new residential construction. It was Part 3.1.4 in the 2019 edition; the 2022 edition restructured the numbering.

The intent of the provision is stated plainly: *"to provide for a termite management system that deters termites from gaining entry to a building via a concealed route."*

The important word is "concealed." The NCC doesn't require that termites be unable to approach the building or be present on the site at all — that's not achievable. What it requires is that the management system forces termite entry attempts into a zone that is visible to an inspector. A termite that has to expose itself above ground to approach the building can be found before it reaches the timber. One that can travel through soil directly to the structure cannot.

Every new residential build in NSW's full-risk zone is in scope. There is no minimum size or minimum value threshold — the requirement applies to all new residential work.

Deemed-to-Satisfy = AS 3660 compliance

The NCC provides two pathways for compliance: a Deemed-to-Satisfy (DtS) pathway and a Performance Solution pathway. For residential termite management, the DtS pathway is the standard route: install the termite management system in accordance with AS 3660.1:2014 and the NCC requirement is satisfied.

AS 3660.1:2014 covers pre-construction termite management for new building work. It specifies the technical requirements for physical barriers, chemical barriers, and combined systems — the installation methods, the minimum inspection zone dimensions, the testing requirements, and the documentation obligations.

A certifier reviewing the build at handover wants to confirm that the termite management system is in place and that it was installed per the standard. The pest specialist's installation documentation — the completion certificate, the warranty documents, and the durable notice — provides that confirmation.

What a DtS compliance package typically includes:

• Installation completion certificate from the pest specialist (confirming the system was installed per AS 3660.1)
• Product warranty documentation (TermSeal 50-year for physical barriers, or supplier warranty for chemical systems)
• The durable notice (see below)

The durable notice requirement

Clause 3.1.4.3 of the NCC requires that when a termite management system is installed on a new build, a durable notice must be fixed in the electrical meter box (or equivalent accessible location). The notice must state:

• The type of termite management system installed
• The date of installation
• The name and contact details of the installer, for future inspection and maintenance

This notice has to survive the life of the building in a legible, accessible location. Its purpose is practical: when the property is sold, or when an inspector arrives 5 years later, the durable notice tells them immediately what system was installed, when, and who did it. Without it, the inspection history starts from scratch and the original installation is unverifiable.

The durable notice is the most commonly missed deliverable at handover. It's a small, inexpensive step that builders and pest specialists both know about, and it consistently gets left off the handover checklist. Certifiers ask for it, solicitors ask for it during conveyancing, and future inspectors need it. Build it into the scope and the handover checklist explicitly.

Physical vs chemical for new builds

For new residential construction in NSW, the two main compliance pathways under AS 3660.1 are physical barriers and chemical barriers. Each has a different warranty profile and different installation considerations.

Pre-construction physical barriers (TermSeal and equivalents). A continuous sheet installed under the slab before the pour, with pipe penetrations sealed using termite collars. Backed by a 50-year product warranty. Requires the pest specialist on-site during the pour preparation phase — the installation window opens with the prepared substrate and closes when the concrete goes down.

Chemical barriers (Termidor-type applications). Applied to soil under and around the slab, either pre- or immediately post-pour. A 8-year product warranty applies. Where the physical barrier approach isn't the builder's preference or site conditions make it impractical, a chemical barrier to AS 3660.1 requirements is the alternative.

The choice between them is typically driven by builder preference, project sequence, and cost — both achieve compliance when installed per the standard. Physical barriers are increasingly common because the 50-year warranty is a compelling handover document, particularly in higher-value residential projects where the warranty transfers to the buyer.

For jobs where a physical barrier is installed and chemical treatment is also done (around the slab perimeter, for example), both warranties apply to their respective systems. The durable notice should document both.

Working with a pest specialist on a new build — the sequencing

The pest specialist's role on a new build isn't an afterthought, and it's not a single visit. The sequence:

Pre-pour stage. For physical barrier jobs, the pest specialist is on-site after the substrate is prepared and before the slab is poured. Sheet is laid, penetrations are sealed, a pre-pour inspection confirms integrity. The window between substrate completion and concrete pour needs to be coordinated between the builder and the pest specialist — often 24–48 hours, but dependent on the site programme.

Post-pour / pre-frame stage. For chemical perimeter treatment, the application is done after the slab is poured but before framing begins — when the full perimeter is accessible and before anything is built against the external walls that would complicate access.

Durable notice at handover. The pest specialist provides the durable notice sticker at the end of the job. It goes in the meter box; the builder includes it in the handover documentation package.

NCC variation note. The full-risk termite requirement applies across NSW. Tasmania is exempt (termites are not considered a risk there). Victoria has a partial-risk zoning system. For builds outside NSW, confirm the specific state variation — the NCC national version and state adoptions can differ.

Next step

If you're a builder or owner-builder and want to confirm what the termite management installation scope looks like on your next project, or if you need documentation for a current build's handover package, get in touch.

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