Termite treatment costs on the Gold Coast.
What a full chemical soil treatment costs versus a Sentricon baiting program for a typical Gold Coast home — and the factors that move the price up or down. Treatment pricing is separate from inspection costs; this page covers what happens after the inspection report.
Termidor chemical soil treatment pricing.
What Termidor (fipronil) treatment involves.
A full chemical soil treatment creates a continuous treated zone in the soil around and, where accessible, under the slab. Termidor SC (fipronil 100 g/L) is the dominant product on the Gold Coast for this application. It works by a transfer effect: workers that contact the treated zone carry the active constituent back to the colony, eventually eliminating it. Fipronil is non-repellent, so workers cannot detect and avoid it.
Application method depends on construction type:
- Slab-on-ground, perimeter only: Trench-and-rod along the external footings, inject into any slab penetrations, and rod the internal sub-slab zone where accessible. Typical application rate 5 L/lineal metre per side of footing.
- Slab-on-ground, full perimeter + internal: As above, plus injection through the slab at 300 mm centres (hammer-drill, inject, plug). Required when the inspection identifies active damage in interior areas not reachable from the perimeter.
- High-set Queenslander / suspended floor: Soil treatment to the full sub-floor ground plane plus rod-and-inject around all stump and pier footings. Access via the sub-floor entry hatch.
Typical Termidor treatment price ranges for Gold Coast homes.
- Standard single-storey slab-on-ground, 4 bedroom: $2,800–$4,200 (incl GST). Perimeter linear metre typically 60–90 LM.
- Two-storey slab-on-ground, 4–5 bedroom: $3,800–$5,500. Larger footprint, longer perimeter, more penetrations.
- High-set Queenslander, sub-floor access: $3,500–$6,000. Sub-floor treatment plus stump injections add time and chemical volume.
- Townhouse (terrace or attached): $2,200–$3,500. Smaller footprint but shared walls require treatment of accessible perimeter only — internal party walls cannot be treated without access from the adjoining property.
- Internal slab injection (through-slab drilling): Add $800–$2,000 to any of the above where internal active damage requires it.
The treatment comes with a warranty of up to 8 years when applied by a certified Termidor applicator, subject to annual inspections. See our warranty and insurance page for what the warranty does and does not cover.
Sentricon Always Active baiting system pricing.
How Sentricon Always Active works.
Sentricon Always Active is a colony-elimination baiting system. Stations containing Recruit® HD termite bait (noviflumuron active) are installed in the soil at regular intervals around the perimeter of the home. Workers foraging in the area locate the bait, consume it, and return the active constituent to the colony via trophallaxis (food sharing). The active blocks chitin production — the worker moult cycle — eventually eliminating the colony including the queen.
Unlike a chemical soil treatment, Sentricon is a permanent perimeter monitoring and baiting program, not a one-time application. The stations remain in the ground indefinitely; a licensed technician inspects and replenishes the bait matrix on an annual (or more frequent) service visit. If new termite activity is detected at any station, a response visit is triggered.
Sentricon installation and annual service costs.
- Initial station installation, standard 4-bedroom home: $2,500–$4,500 (incl GST). Covers site survey, station placement at recommended intervals (typically 3–5 m apart), GPS mapping, and first bait loading.
- Larger homes, difficult perimeters (rocks, concrete, dense garden): $3,500–$6,000 installation. Additional stations and access difficulty add cost.
- Annual monitoring and bait replenishment: $400–$800/year depending on station count and site access.
- Active infestation response service visit: Included in the monitoring program; additional bait stations placed near active areas at no extra charge.
Sentricon is most cost-effective over a 5–10 year horizon when compared with a chemical treatment that may need replenishment within that period. On the Gold Coast, where lake-edge sites and canal-front properties have ongoing foraging pressure from multiple colony sources, the continuous monitoring of Sentricon is a genuine operational advantage. See our baiting systems service page for the full program detail, and our Termidor vs Sentricon comparison for a head-to-head analysis.
The five factors that determine treatment cost.
1. Construction type: slab vs high-set Queenslander.
Slab-on-ground homes have a defined perimeter that is relatively straightforward to treat. High-set Queenslanders add a full sub-floor zone: the technician must treat the entire ground plane and inject around every stump or pier footing. On a typical Gold Coast Queenslander with 15–20 stumps plus a large sub-floor, this adds $800–$2,000 to the base treatment cost and 2–4 extra hours on site.
2. Slab-edge access: landscaping, paths, and decks.
A perimeter chemical treatment requires continuous trench-and-rod access along the full slab footprint. Concrete paths poured against the slab edge, timber decking bolted to the structure, concrete garden edging, and dense plantings all restrict or eliminate access at sections of the perimeter.
Where paths and paving cannot be removed, the treatment method changes: horizontal injection through the path surface (drilling at 300 mm centres), or through-slab injection from the inside. Both methods are more labour-intensive and increase the cost. Dense garden beds against the wall add time for clearance (charged at the technician’s hourly rate, or left to the owner to clear before the visit).
3. Active infestation severity.
A property with active termites in wall linings, roof void timbers, or sub-floor framing requires more targeted treatment than one where the colony has been found only in an outbuilding or garden sleeper. Severe active infestations typically require:
- Internal through-slab drilling in affected rooms to treat under-slab pathways
- Possible directed foam or dust treatment into active galleries (Termidor Dry foam) before the soil treatment
- A post-treatment verification inspection at 6–12 weeks to confirm colony collapse
Each of these adds to the total treatment cost. An accurate post-inspection quote itemises them.
4. Property size and perimeter linear metres.
Chemical treatment is typically priced per linear metre of perimeter treated (including internal wall injection points). A compact townhouse on 180 m² might have 55 LM of perimeter; a large Gold Coast family home on 800 m² with a pool fence and outdoor entertaining zone might have 140 LM. The difference in chemical volume and time is significant.
5. Reticulation system condition (existing homes).
If the property already has a pre-pour reticulation system, the existing pipes may be used to deliver a chemical replenishment rather than full trench-and-rod treatment. A functioning reticulation system in good condition can reduce treatment cost substantially ($1,200–$2,500 recharge vs $3,000–$5,000 new treatment). Our inspection determines whether the system is intact and replenishable. See also our Robina page for notes on reticulation system expiry on Gold Coast estates built in the 1990s.
When treatment is the answer vs a new barrier.
A chemical soil treatment (see our chemical soil treatment service) and a termite management barrier installed for a new build (see our post-construction protection service) are related but distinct. The choice between them depends on:
Treatment is the right choice when:
- Active termites have been confirmed in or around the structure
- The inspection has identified the colony source or entry point
- An existing chemical barrier has expired and the property has active pressure
- Rapid protection is needed (pre-settlement, pre-renovation)
A new barrier or post-construction protection is the right choice when:
- No active termites are present but the property has no current barrier
- The existing reticulation system has failed and cannot be replenished
- Major renovation or extension is being undertaken (NCC triggers a new-build obligation for the new work)
- The client wants a long-term, documented protection system rather than a point-in-time treatment
In practice, many Gold Coast jobs require both: treatment to address active colony pressure and a new or refreshed barrier for ongoing protection. Our post-inspection report and quote separates these into line items so you can make an informed decision on the full scope.
Frequently asked questions.
How much does termite treatment cost on the Gold Coast in 2026?
A full Termidor chemical soil treatment for a standard Gold Coast slab-on-ground home costs $2,800–$5,500 (incl GST). Sentricon Always Active baiting station installation is $2,500–$4,500 for a typical home, plus $400–$800/year for annual monitoring. Prices vary with home size, construction type, and active infestation severity.
Is chemical soil treatment or baiting better for Gold Coast homes?
Chemical soil treatment (Termidor) creates an immediate protective zone and is preferred where the colony source is unknown or where rapid protection is needed. Baiting (Sentricon Always Active) eliminates the colony at the queen but takes 3–6 months to achieve elimination. On the Gold Coast, Coptotermes acinaciformis colonies can be 30–100 metres away; baiting is often combined with treatment for comprehensive management.
Does a high-set Queenslander cost more to treat than a slab home?
Yes, typically 20–40% more. High-set homes require chemical injection to the soil around all stump and pier footings plus perimeter treatment. Sub-floor access adds time. If the stump zone has landscaping, concrete paths, or limited access, cost increases further. A pre-treatment inspection and quote is essential for any high-set property.
What does the treatment warranty cover on the Gold Coast?
Termidor treatment (fipronil) carries a manufacturer-backed treatment warranty of up to 8 years when applied by a certified applicator. The warranty requires annual inspections to remain valid. Sentricon Always Active carries an ongoing warranty while the monitoring program is current. Both warranties cover re-treatment costs if the colony breaches the treated zone under normal conditions; they do not cover construction changes or modifications that breach the barrier.
Can I get a termite treatment quote without a prior inspection?
No reputable Gold Coast pest technician will quote treatment without a prior inspection. The inspection establishes the extent of active damage, identifies the likely species and entry points, and determines whether a chemical treatment, baiting system, or combined approach is appropriate. A quote without inspection means the technician has not assessed the problem.
Where we work.
Get a treatment quote after your inspection.
Inspection first, then an itemised treatment quote — chemical soil treatment, baiting, or combined. QBCC-licensed across the Gold Coast.