Timber pest inspection vs pest control: what is the difference?

Why the terms get confused

"Timber pest inspection" and "pest control" sound like the same thing. Both involve pests. Both happen at residential properties. Both involve a licensed operator coming to your home. But they are different services with different scopes, different licensing requirements, different costs, and different reasons to commission them.

This article exists because the confusion costs Adelaide homeowners money. People buying a property sometimes ring a general pest controller (cockroach and ant treatment) thinking they have booked a pre-purchase pest inspection. They have not. Conversely, people seeing ants in the kitchen sometimes book a $400 timber pest inspection when a $150 general pest treatment is what they need.

We are a quote marketplace for pest inspections in Adelaide. The confusion between these two services is common. Here is what each service actually is, and when you need which.

Timber pest inspection: the AS 4349.3 service

A timber pest inspection is a visual, non-invasive inspection of a property focused specifically on pests that damage timber. The scope is set by the Australian Standard AS 4349.3, which defines four classes of timber pest:

• Subterranean termites (the dominant Adelaide species is Coptotermes acinaciformis)
• Borers (wood-eating beetle larvae including European house borer, Lyctus, and Anobium)
• Fungal decay (wet rot, dry rot, white rot, brown rot in structural timbers)
• Wood-rotting wood decay (broader category covering combined moisture and microbiological breakdown)

The inspector walks the property and assesses each of these classes against the structure. The report identifies active or past presence of any timber pest, conducive conditions to timber pest, and recommended further investigation or treatment.

Critically, the timber pest inspection does NOT cover:

• General nuisance pests (cockroaches, spiders, ants, silverfish, fleas, bedbugs)
• Vertebrate pests (rats, mice, possums, birds)
• Stinging insects (bees, wasps)
• General hygiene or pest residue inspection

Those are general pest control concerns. They sit outside AS 4349.3.

Pest control: the broader trade service

Pest control is the broader trade service of treating, eliminating, or managing pest populations in a property. It is a regulated activity under SA pest management law, requiring a licensed pest management technician, and it covers a much wider range of species than a timber pest inspection.

Typical pest control scope:

• Cockroach treatment (German, Australian, American, Oriental species)
• Spider treatment (white-tailed, redback, huntsman, mouse spiders)
• Ant treatment (Argentine, black house, white-footed, coastal brown)
• Rodent treatment (rat and mouse baiting, trapping, exclusion)
• Silverfish, flea, bedbug, mite treatment
• Possum and bird exclusion (with appropriate permits for protected species)
• Bee and wasp nest removal
• Termite treatment (a sub-specialty of pest control, requires additional accreditation and AS 3660 knowledge)

Pest control is what you book when you have an active pest problem at the property, want it gone, and are paying for the application of chemistry or physical exclusion measures to make that happen.

The licensing difference

In South Australia, both timber pest inspection and pest control are regulated activities, but the licensing pathways are different.

A timber pest inspector typically holds:

• A South Australian pest management technician licence (administered by SafeWork SA)
• Specific accreditation in timber pest identification and reporting
• Professional indemnity insurance to cover written reports
• Public liability insurance to cover on-site work

Many timber pest inspectors are also licensed pest controllers (they can treat as well as inspect). Some specialise in inspection only and do not perform treatment. The latter has the advantage of independence: an inspection report from someone with no commercial interest in the recommended treatment is more credible.

A pest control technician typically holds:

• A South Australian pest management technician licence
• Chemical use accreditation
• Specific endorsements for termiticide use (if doing termite treatment)
• Public liability insurance

The licensing overlap is significant. The scope overlap is less so. A general pest controller treating ants in your kitchen is not necessarily qualified to write an AS 4349.3 inspection report. A specialist timber pest inspector is not necessarily licensed to apply termiticide.

For a pre-purchase context, you specifically need a timber pest inspector who can produce a written AS 4349.3 report. For a "my kitchen has cockroaches" context, you need a pest controller who can apply chemistry. Different services, different operators, different price points.

Cost comparison

The price difference reflects the scope difference.

Service	Typical Adelaide cost	Output
Timber pest inspection (standalone)	$200-$350	Written AS 4349.3 report, photos, defect categorisation
Combined building and pest inspection	$400-$700	AS 4349.1 + AS 4349.3 report, structural + pest scope
General pest control (one-off)	$150-$350	Treatment certificate, often warrantied 6-12 months
Termite treatment	$2,500-$5,000	Treatment certificate, AS 3660 compliance documentation, 5-year warranty
Routine annual pest control	$250-$400 per annum	Recurring treatment certificate
Annual termite inspection	$200-$350	Written re-inspection report

These are 2026 Adelaide metro ranges. Specific quotes vary by property and operator.

For more on combined building and pest inspection costs, see our Adelaide cost guide.

Why pre-purchase requires timber pest, not general pest control

The most common confusion is buyers who think they have a pre-purchase pest inspection booked when they have actually booked a general pest treatment. The two are not interchangeable for a pre-purchase context.

A pre-purchase pest inspection serves a specific commercial purpose: providing the buyer with documented assurance about the timber pest risk on the property, before the buyer commits to the purchase under their contract. The output must be a written AS 4349.3 report. A treatment certificate or a verbal walk-through is not equivalent.

What the AS 4349.3 report does that a general pest control service does not:

• Documents active or past presence of timber pests with photographic evidence
• Records the inspector's qualifications, licence number, and insurance details
• States explicitly what was inspected and what was not
• Categorises findings (Major Defect, Minor Defect, Safety Hazard, Maintenance Item)
• Provides recommendations for further investigation
• Acts as a third-party reliance document for cooling-off decisions

A buyer who relies on a "we sprayed the property for ants" certificate as their pest inspection has no contractual protection if a termite issue surfaces post-settlement. Their conveyancer will tell them the same.

How a timber pest inspection actually runs

A standard Adelaide timber pest inspection takes 60-90 minutes on site, with the report following in 24-48 hours. The inspector follows a defined sequence:

1. External perimeter walk-around (15-20 minutes): looking for shelter tubes, conducive conditions, existing barrier integrity, slab edge inspection zones, drainage, tree proximity.
2. External cladding and roof exterior (10-15 minutes): walls, eaves, soffits, gutters, roof tiles, flashings, ventilation openings.
3. Roof void inspection (15-20 minutes): framing, sarking, insulation, plumbing penetrations, water staining, active activity, possum or rodent presence.
4. Subfloor inspection (15-20 minutes if accessible): bearers, joists, stumps, ventilation, ground moisture, tap-test of timbers, signs of activity.
5. Internal room-by-room (15-20 minutes): skirtings, architraves, door frames, window frames, wet areas, built-in timber, suspect timber tap-test.
6. Moisture metering (5 minutes): meter readings on suspect timber to confirm moisture content.
7. Outbuildings, decks, retaining walls (5-10 minutes): same scope at scale.
8. Tree and stump survey within 50 m (5 minutes): species identification, proximity, stump conditions.
9. Final notes and photography (5-10 minutes): consolidating findings before leaving site.

The written report comes later. It typically runs 12-30 pages depending on findings, with photographs of each defect, location notes, and recommendations.

For more on the scope, see our what does a pest inspection check for guide.

When to book general pest control instead

There are real scenarios where general pest control is the right service:

• You see a single line of ants in the kitchen and want it treated: book pest control, not a timber pest inspection. Cost $150-$250.
• You have a cockroach issue in the kitchen and need it eliminated: book pest control. Cost $150-$300.
• You have a wasp nest in the eaves: book pest control with wasp-specific endorsement. Cost $150-$300.
• You have a rodent issue in the roof void: book pest control with rodent baiting expertise. Cost $200-$400 plus follow-up.
• You need annual maintenance pest treatment as part of a property management cycle: book annual pest control. Cost $250-$400 per annum.
• You suspect possum activity in the roof void and want them excluded: book pest control with possum-specific accreditation (possums are protected under the Native Animals Act in SA). Cost $300-$600 plus exclusion works.

None of these scenarios require a timber pest inspection. Booking one would be over-spec for the problem.

When timber pest inspection is the right service

• Pre-purchase due diligence on any property: timber pest inspection essential, ideally combined with building inspection.
• Vendor inspection before listing: timber pest inspection essential.
• Annual maintenance inspection for AS 3660 barrier warranty: timber pest inspection required.
• After a positive termite finding to confirm scope: timber pest inspection from an independent inspector before commissioning treatment quotes.
• After major weather event or neighbour construction that may have disturbed termite habitat: timber pest inspection within 6-12 months.
• You see a shelter tube, hollow timber, swarm wings, or other termite activity sign: timber pest inspection within the week.

For the full pre-purchase context, see our pre-purchase inspection guide.

What if a single operator does both?

Many Adelaide operators are licensed for both. They will quote a timber pest inspection AND offer pest control or termite treatment quotes after the inspection. There is nothing wrong with this in principle, but it raises an independence question.

The reasoning: an inspector who knows they will be quoting for the follow-up treatment has a commercial incentive to find issues that justify treatment. Reputable operators manage this with professional integrity, clear scope, and AS 4349.3 documentation. Less scrupulous operators do not.

The independence safeguard is to commission the inspection from one operator and the treatment (if needed) from a different operator. The added cost is small (two separate quotes vs one combined quote) and the added clarity on what is genuinely needed is worth it for treatment decisions that run to $2,500-$5,000.

Common questions

Are timber pests the same as "white ants"?

Subterranean termites are the most economically significant timber pest, and they are also commonly called "white ants" in colloquial Australian usage. But timber pests also include borers (beetle larvae), fungal decay, and wood-rotting decay, none of which are termites. The full AS 4349.3 scope is broader than just termites. See our white ant treatment guide for the termite-specific angle.

Can a general pest controller write an AS 4349.3 report?

Only if they hold the specific timber pest inspection accreditation in addition to general pest control. The skills overlap is partial. If you need a report for a pre-purchase or vendor context, confirm the operator holds AS 4349.3 reporting capability before booking.

What does AS 4349.1 cover that AS 4349.3 does not?

AS 4349.1 is the building inspection standard. It covers structural elements (walls, floors, roof, foundations), wet areas, doors, windows, finishes, electrical and plumbing visible defects, and site features. AS 4349.3 is specifically for timber pests. A "combined building and pest inspection" covers both standards in one visit.

Why is AS 4349.3 a separate standard from AS 4349.1?

Because timber pest identification requires specific training and equipment (moisture meters, knowledge of species behaviour, recognition of conducive conditions) that goes beyond general building inspection. A standard building inspector can identify visible defects but may not identify subtle termite activity. The separate AS 4349.3 standard ensures pest-specific competence is documented.

Is timber pest inspection the same as termite inspection?

Almost. Termite inspection is a subset of timber pest inspection. A termite inspection focuses specifically on subterranean termite activity and conducive conditions. A timber pest inspection covers termites plus borers, fungal decay, and wood rot. In practice, the two terms are often used interchangeably for residential properties because termites are the dominant timber pest concern.

How much does each cost in Adelaide in 2026?

Timber pest inspection: $200-$350 standalone, $400-$700 combined with building. General pest control treatment: $150-$350 for a one-off job, $250-$400 for an annual maintenance program. Termite treatment: $2,500-$5,000 for an active infestation, depending on method and property size.

Bottom line

Timber pest inspection is an AS 4349.3 service focused on termites, borers, fungal decay, and wood rot. It produces a written report and is essential for any pre-purchase or vendor context.

General pest control is the treatment trade, focused on a wider range of nuisance pests (cockroaches, spiders, ants, rodents) and on the application of chemistry or exclusion measures to eliminate them.

The two services are not interchangeable for the contexts they are designed for. Match the service to the actual problem you have.

If you are buying a property, you need a timber pest inspection. Compare quotes from up to 3 vetted Adelaide pest inspectors. Free for homeowners, no obligation. Get your free quotes here.