Termite barrier cost has no standard figure, because the scope of the job changes from house to house: the metres of perimeter, the concrete or paving to drill, the product the soil takes at the label rate, and access to the site. No dollar figure appears on this page for that reason. Instead, this guide covers what sets the scope, which Queensland rules apply to your home, and a worksheet for comparing two quotes.
Why no single figure fits your barrier
No single figure fits because, in its termite management advisory notes, the Queensland Building and Construction Commission (QBCC) says the cost of control methods and the effective life of a treatment can vary considerably, as can ongoing costs and renewal treatments. QBCC also warns that the cheapest method of termite management may not be the most appropriate method for a particular site. On this page, preventative termite treatment, termite protection and a termite management system all mean protecting the building, not removing an active colony.
Whether protection is worth paying for is a separate question, covered in our post on whether termite control is worth paying for. If you already have termites, removing the colony is a different job; see what affects the cost of termite treatment.
What sets the scope: perimeter, concrete and access
Seven things set the scope of a termite barrier: how much ground has to be treated, how hard that ground is to reach, and what else touches the house. Each one can move a termite barrier installation cost up or down:
- Perimeter length. The CSIRO guide Managing Termites says a trench is normally dug around the slab or supporting structure and backfilled with treated soil, so a longer perimeter means more trench.
- Concrete and paving against the walls. Where paving covers the soil and no reticulation system was laid underneath, CSIRO says problem areas need to be drilled so insecticide can be injected into the soil below. The process is called rodding.
- Soil type. QBCC says sandy loam suits chemical termite management, while crusher dust or stone and rubble is not appropriate. QBCC adds that contractors need to check soil conditions are suitable before applying any chemical.
- Things attached to the house. QBCC says garden beds, wood chips and attached carports, pergolas and fences can bridge a barrier. It advises treating the soil around attached members that touch the ground.
- Subfloor height and access. QBCC says systems under a suspended floor rely totally on access for inspection and treatment.
- Service penetrations. CSIRO says service holes and joins in the slab must also be protected for a perimeter treatment to work.
- Product quantity. The APVMA’s guide to pesticide labels says a label’s directions for use show the rate or range of rates to apply. QBCC says label conditions must be followed.
How your house type changes the job
House type changes a termite barrier job because it decides where termites can get in and how much of that ground can be reached from outside.
| House type | What usually needs protecting | What can make it bigger |
|---|---|---|
| Slab-on-ground | Soil along the slab edge, plus services that pass through the slab | Paths, driveways and paving against the walls; garden beds built up against the walls |
| Split-level, or a mix of slab and suspended timber floor | Each floor type, which may need a combination of systems | A split-level slab or retaining walls; QBCC says a chemical system alone may be inadequate there |
| Zero-lot-line (a wall on the boundary) | The perimeter; for a new design, QBCC names zero-lot-line buildings as needing physical systems or termite-resistant materials | Ask how the quote handles the boundary wall |
| High-set or on stumps with an open subfloor | Soil around stumps and footings, and access to the subfloor | Low clearance under the floor, as QBCC says systems under a suspended floor rely totally on access for inspection and treatment. Attached carports, pergolas and fences |
For a new design, QBCC also says hand-sprayed chemical perimeter barriers will not be suitable for zero-lot-line housing.
New build or existing home: which Queensland rules apply
QBCC describes AS 3660.1 as the standard for new building work, and notes that the Building Code of Australia (BCA) requires all new homes to have some form of termite management.
Building or extending
QBCC explains that AS 3660.1, Termite Management: New Building Work, is referenced in the BCA. The BCA as it applies in Queensland has a variation. QBCC’s April 2024 advisory notes describe the variation as requiring:
- the ability to replenish a chemical system where the chemical’s life is significantly different to the building’s, which may mean a reticulation system under a concrete slab;
- for chemical perimeter systems, trenches that are treated, backfilled and treated again, finished with a concrete protection layer known as a mowing strip;
- a durable termite management notice in a prominent location, such as the meter box;
- consideration of access for installing, maintaining and inspecting the system.
QBCC adds that the building certifier may require the licensed installer to certify the installation. QBCC also recommends an acknowledgement notice before signing a building contract. Work these through with your builder and certifier. If you are building, see pre-construction termite protection.
An existing home
QBCC describes AS 3660.1 as part of a trilogy of standards that includes Part 2, which deals with existing buildings. CSIRO lists AS 3660.2 as the standard for termite management in and around existing buildings and structures. Neither QBCC nor CSIRO sets out what AS 3660.2 requires, so this guide does not list it. The new-work list above is not a checklist for a retrofit quote. Instead, ask for a written scope that states what the barrier treats, what it leaves out, and the reason for each exclusion. For how the systems work, read termite management systems explained.
Chemical, physical and baiting: what each commits you to over time
Every termite barrier approach carries an installation cost and an ongoing commitment. What differs is what recurs, so comparing a chemical termite barrier cost with a termite baiting system cost on the installed total alone leaves part of the picture out. QBCC tells homeowners to weigh a system’s cost, durability and maintenance, and to compare warranty benefits before committing. A barrier will not stop termite activity on the site, QBCC says; it reduces the risk of concealed entry to the building.
| Approach | Installed when | What recurs | What to ask |
|---|---|---|---|
| Chemical soil treatment around the perimeter | At building stage or later; CSIRO says post-construction perimeter treatments are more common | Ongoing treatment, as QBCC says chemical systems have a limited life. The owner must meet the maintenance requirement on the termite management notice, which gives the life expectancy on the APVMA label | Which product, its life expectancy on the label, and whether reticulation allows top-ups without drilling |
| Physical systems such as stainless steel mesh or graded stone | Under the slab at building stage, or around the perimeter or at penetrations | Inspections; QBCC says physical systems are generally designed to last the lifetime of the building with proper maintenance | Which areas are covered. Whether the warranty holds if another system is added, as QBCC says some installers may not honour warranties on combinations |
| Baiting and monitoring | CSIRO describes baiting as a way to control an active colony. Stations sit against infested wood or shelter tubes, or are partly buried around the building | Station checks for as long as the program runs; CSIRO says baits should be checked every few weeks | How many stations, how often they are checked, and what happens when termites are found |
Whatever the approach, QBCC recommends an inspection by a QBCC-licensed contractor at least every 12 months, or more often in high-risk areas. The inspection checks that termites have not bridged the barrier.
Comparing two quotes like for like: a worksheet
Comparing two termite barrier quotes like for like means lining them up row by row before comparing totals. If two quotes for the same house state different metres, ask each one what it measured. One may cover the whole perimeter and the other only the runs it can reach, and drilled concrete may be counted separately.
| Line to compare | Quote A | Quote B | Why it matters |
|---|---|---|---|
| Linear metres of soil treated | The basic measure of ground covered | ||
| Metres drilled or rodded through concrete or paving | Drilling is how insecticide reaches soil under paving with no reticulation | ||
| Areas left out, and why | QBCC says a bridged or breached perimeter is the most frequent cause of infestation | ||
| Approach and system named | Each approach carries a different ongoing commitment | ||
| Product named, and the label rate it is applied at | The label sets the rate, so product and rate show what the soil receives | ||
| Replenishment or reticulation | Decides how the barrier is topped up later | ||
| Installation certificate and durable notice | Your record of what was installed; see the FAQ below | ||
| Inspection the quote is based on, and inspections after | Shows whether the scope was measured on site, and what follow-up is included | ||
| Warranty terms, conditions and what voids them | QBCC warns that breaching a system can void warranty and insurance entitlements | ||
| Renewal or re-treatment date | Tells you when the next cost falls due |
Print the table, fill in one column per quote, and start with the “Areas left out” row: two quotes that leave out different runs cover different jobs.
Warning signs in a quote
A termite barrier quote deserves a closer look when it leaves out the details you need to compare it. Watch for:
- no metres or areas stated;
- paved or obstructed runs left out without saying so;
- no product named, and no mention of the label;
- no mention of an installation certificate or a durable notice;
- a warranty mentioned with no written terms;
- no inspection before the quote, or none after the work;
- no QBCC termite management licence. QBCC says a contractor needs a Termite Management (Chemical) or (Physical) licence to give advice or reports on termite management systems. Chemical work also needs a Queensland Pest Management Licence from the Department of Health. A physical licence covers the particular system stated on it. QBCC offers a free licence history check on its website.
A lower total is only cheaper if it covers the same scope. Use the worksheet to check that first.
Next steps
To weigh up the three approaches, read termite management systems explained. When you want your own home scoped, see our termite inspection and treatment service. Building or extending? Start with pre-construction termite protection. Bob Gunn Termite Solutions works across Brisbane, Moreton Bay, Logan, Ipswich, Redlands, the Gold Coast, the Scenic Rim and the Sunshine Coast, and quotes are free. To ask for one, call (07) 3286 9877. For local service details, see pest control in Brisbane.
Common questions
How much does it cost for termite bait stations?
A bait station quote depends on how many stations the perimeter needs, how often they are checked, whether bait is added when termites are found and how long monitoring runs. Describing baiting to control an active colony, CSIRO mentions stations placed against infested wood or active shelter tubes, or partly buried in soil around the building, with insecticide added when first installed or after termites are attracted, and says baits should be checked every few weeks. Ask each quote to list all four points.
Do I pay for termite protection every year?
Some termite protection costs recur after installation. QBCC advises having a licensed pest controller inspect and report on your property every year, or more often in high hazard areas. QBCC also says you need to meet your system's maintenance requirement as stated on the termite management notice, which, where chemicals are used, gives the life expectancy listed on the APVMA label. If baiting is used, ask how often stations are checked and for how long. Ask each quote to separate one-off work from what recurs.
Do I need an inspection before getting a barrier quote?
A barrier scope depends on the perimeter, the concrete and paving, subfloor access and any termite activity already present, and an inspection is how those are established. QBCC notes that systems under a suspended floor rely totally on access for inspection and treatment, and that contractors need to check soil conditions are suitable before applying any chemical. If a quote arrives without anyone looking at the site, ask what it assumes about the scope and what would change it.
What paperwork should I get after a barrier is installed?
For new building work, QBCC lists what an installation certificate should contain, including the date, owner, property and building details, details of the termite work undertaken with a diagram where appropriate, and the areas involved. QBCC says the BCA also requires a durable notice, usually in the electrical meter box, stating the method of protection, the installation date, the chemical's life expectancy on the APVMA label and recommended inspections. For an existing home, ask for the same details and written warranty terms.
Does soil or location in south-east Queensland change a barrier quote?
Soil can. QBCC notes that sandy loam suits chemical termite management, that crusher dust or stone and rubble does not, and that contractors need to check soil conditions before applying any chemical. Beyond soil, each job is scoped to the house and site, and QBCC warns that footpaths, garden beds, patios and turf may make a system less effective. Bob Gunn Termite Solutions works across Brisbane, Moreton Bay, Logan, Ipswich, Redlands, the Gold Coast, the Scenic Rim and the Sunshine Coast, and quotes are free.
Sources
- Termite Management Systems: Advisory Notes for Builders and Homeowners (April 2024), Queensland Building and Construction Commission. Accessed 7 November 2026
- Protect against termites, Queensland Building and Construction Commission. Accessed 7 November 2026
- Termite management (chemical) licence class, Queensland Building and Construction Commission. Accessed 7 November 2026
- Termite management (physical) licence class, Queensland Building and Construction Commission. Accessed 7 November 2026
- Managing Termites: Understanding termites and reducing their risk to buildings (Building Technology Resources, 2021), CSIRO. Accessed 7 November 2026
- Understanding Pesticide Chemical Labels, Australian Pesticides and Veterinary Medicines Authority. Accessed 7 November 2026
