What borer inspections and treatment cost in Auckland

What does a borer inspection cost in Auckland?

An inspection booked through this site costs $285 + GST and covers the roof space, subfloor, cladding and the areas you raise, with written findings. The fee is credited against the treatment if you go ahead with the recommended work through the same operator. For comparison, the few Auckland firms that publish a figure put a borer inspection at about $250 to $420, depending on house size and access.

What the inspection records is set out on the borer inspection page.

Why does a borer inspection come before a treatment quote?

Because the price depends on facts nobody has until someone has been in the roof space and under the floor: which beetle, whether it is live, how many members it is in, and whether any of them are too weak to treat. A quote given over the phone has to assume the worst or the best, and either way it may be paying for timber that needs nothing.

Old damage with no sign of activity usually needs no treatment, and an inspection that says so saves the cost of spraying a roof space for borer that left years ago. Live borer in one area can be treated in that area alone. Weakened timber goes to a builder, not to a pest quote.

How much does borer treatment cost in Auckland?

Published Auckland prices put treatment of a roof space at about $350–$600 + GST and a subfloor at about $450–$750 + GST, which is a guide rather than a quote. Furniture is priced per piece, and floors, stairs and weatherboards are quoted once an inspection has shown how much of them is affected.

What the treatment itself involves, area by area, is set out under treating live borer.

What makes borer treatment cost more or less?

Five things move a borer price more than anything else: how easy the roof space and subfloor are to reach, how much timber is affected, whether it is bare wood or painted, varnished or polished, which beetle is involved, and how many separate items need work. An old villa with a low subfloor and painted rimu floors costs more to treat than a bungalow with an open subfloor and bare framing.

• Access. A crawl space with little clearance, or a roof space without boards to walk on, takes longer and may limit what can be treated.
• Extent. A few joists along one wall is a different job from borer through the whole subfloor.
• Finished or bare timber. Surface products reach bare timber. Painted, varnished or polished timber usually needs injection into the holes, which is slower.
• The beetle. The two-toothed longhorn works through heartwood and tends to cause severe damage that ends in replacement, so it often brings a builder into the cost.
• Number of items. Each piece of furniture is handled separately.
• Moisture. A damp subfloor may need ventilation work before treatment will last.

Older houses cost more mostly because they have more untreated timber, not because the method is different.

What is not included in a borer treatment price?

Repairs. A pest-control price covers the beetle, not the timber it has weakened. Replacing piles, bearers, joists, floorboards or weatherboards is builder's work with its own quote, and some of it needs a building consent. Fixing the moisture that lets borer thrive, such as clearing vents or repairing leaks, is also usually separate and may involve another trade.

Under Schedule 1 of the Building Act, replacing some damaged components like for like, in the same position, is generally exempt from consent. Complete or substantial replacement of anything that carries the structure is not, so a full re-pile needs a consent. Published re-piling costs vary very widely: one New Zealand cost guide from 2025 puts partial re-piling at roughly $5,000 to $20,000 and whole-house work from about $15,000 to well over $100,000. When consent and builders come into it is explained under borer damage repair.

Is DIY borer treatment cheaper than a professional one?

Retail products usually cost less up front than a professional visit, and no licence is needed to buy or use retail borer products in New Zealand. The catch is what they reach. Borer bombs and foggers kill only adult beetles in flight, not the larvae feeding inside the timber, and surface sprays work only on bare wood, not through paint or varnish.

DIY can make sense for a small piece of bare, accessible timber, or for furniture you can treat outside. It makes less sense when you do not know which beetle you have, how far it has spread, or whether the timber is still sound. The guide to borer bombs and sprays goes through what each product type can and cannot do.

What does a pre-purchase inspection cost in New Zealand?

In Auckland, published prices for a standard pre-purchase building inspection run from about $400 to $1,200 + GST, rising with the size of the house. A borer inspection booked alongside it is a separate fee. Buyers of older houses often pay for both, because the building report notes borer while the borer inspection measures it.

How to fit the two inside a condition period is covered on the pre-purchase borer inspection page.

Before you compare quotes

• Borer inspectionWhat a borer inspection records, part by part, and what it costs
• Treating live borerWhat treatment involves after a live borer finding: bare and finished timber, timing, moisture and follow-up
• Borer damage repairWhen borer damage needs a builder, which repairs are exempt from consent, re-piling and the order of work
• Pre-purchase borer inspectionA borer check timed to your building condition, read alongside the building report