Buying an Older Nambour Queenslander: What "No Active Termites Found" Really Means

If you're buying an older house in Nambour, there's a good chance your pest report will contain two findings that seem to contradict each other: termite damage noted, and no active termites found.

Buyers read that second line as the good news. Sometimes it is. But "no live activity" is a statement about one morning, in the parts of the house the inspector could reach. It is not a statement that the problem is over. On a stumped Queenslander in the hinterland, the gap between those two things is where most of the expensive surprises live.

This post is about reading that gap properly, before your inspection condition runs out.

Why Nambour reports look like this so often

Nambour has a lot of old timber housing. High-set and low-set Queenslanders on stumps, hardwood frames, pine floors, weatherboards, verandahs. Many were built long before modern termite management systems existed, and most have had eighty or a hundred years of owners, renovations, restumps and repairs.

Add the hinterland conditions: more rain than the coast, heavier soils that hold moisture, big old trees, and bushland and farmland on the edges of town. Subterranean termites do well here. So an old Nambour house that has never had termites at some point in its life is the exception, not the rule.

That's why damage on the report shouldn't panic you on its own. Old, treated, repaired damage is common. The question that matters is a different one: is the colony that did it still a threat to this house? "No active termites found" doesn't answer that. You have to work it out from everything else in the report.

What "no active termites found" actually means

A pre-purchase timber pest inspection in Queensland is a visual inspection of the accessible areas, carried out under Australian Standard AS 4349.3. The inspector looks, sounds and tests the timber they can reach, and uses tools to check what they can't see. At Radar that means a Termatrac radar unit, which detects movement inside walls without drilling, and a moisture meter, because termite workings hold moisture that dry timber doesn't.

So "no active termites found" means: at the time of inspection, in the areas that were accessible, no live termites were detected. Every word of that sentence is doing work.

• At the time of inspection. Termite activity rises and falls with weather and season. A cool, dry morning in winter is a quieter picture than a humid week in November.
• In the areas that were accessible. Look for the list of inaccessible or restricted areas in the report. On an old Queenslander it can be long.
• No live termites were detected. Not "no termites exist". Detection has limits, especially behind linings, under built-in floors and inside stumps.

The four stories behind "damage, but no activity"

1. It was treated, and the treatment is holding

This is the good one. Termites got in years ago, someone found them, the colony was treated, and the damage was repaired or left as is. There's a record, and the house has had regular inspections since.

The clues: a durable notice in the meter box or electrical cupboard showing a termite management system, paperwork from the vendor, damage that looks old and weathered, and no fresh mud anywhere. If you can get the treatment records, ask for them. A vendor with a treated house usually has no reason to hide them.

2. The colony moved on, and it's still nearby

Termites abandon feeding sites when conditions change. A leak gets fixed and a wall dries out. A garden bed gets pulled back. They stop feeding in that timber, but the colony itself is alive, in a stump, a tree or the ground, and it's still foraging. It's just eating somewhere else for now.

The clues: damage with no treatment history, old dry mud leads, and conducive conditions still present around the house (timber in contact with the ground, garden beds against the boards, a tree with a hollow centre close to the house). Without a treatment record, assume nobody killed that colony.

3. They're active where the inspector couldn't see

This is the one that costs people money. Termites are active inside the structure, but in a part of it nobody could access or test.

On Nambour Queenslanders, the usual hiding places are:

• Built-in under the house. A high-set Queenslander that has had the underneath enclosed as rumpus rooms or a flat has hidden its stumps, bearers and the base of its frame behind new walls and floors. That's exactly where termites come up from the ground.
• Low subfloors. Low-set houses often have parts of the subfloor too tight to crawl. The report will say so. Those areas are uninspected, not clear.
• Renovated wet areas. A tiled bathroom over an old timber floor is warm, damp and sealed. Leaks feed termites and hide them at the same time.
• Fresh paint and new linings. Damage that's been filled and painted over for a sale can't be seen, and radar can only tell you about movement, not about what's been patched.

4. It's not termites at all

Not all damaged timber in an old house is termite damage. Fungal decay (wood rot) is common in stumps, verandah posts, the bottom boards of weatherboard walls and anywhere water sits. Borers leave their own marks too: old pine floorboards in Queenslanders sometimes show the small round exit holes of furniture beetle. These need a different response from termites, and a good report will separate them.

Stumps, ant caps and the underneath

On any house on stumps, the underneath tells you more than the inside does. A few things worth knowing before you read that section of the report:

Ant caps are not a barrier. The metal caps on top of stumps (termite shields) don't stop termites. They force them to build a visible mud tube around the edge, so an inspector can see it. A missing, rusted, damaged or bridged ant cap means termites could pass without leaving a sign. Bridging is common: a later timber batten, a pipe or a stored item touching the stump and the frame above it.

Timber stumps versus concrete. Many Nambour houses have been restumped in concrete or steel, sometimes only partly. Old timber stumps in the ground are both food and a hidden highway into the frame. If the report notes timber stumps, ask about their condition specifically.

Stuff stored underneath. Timber offcuts, old doors and cardboard stacked under a high-set house are a feeding station right beside the stumps. They also block the inspector's view, which is worth noticing.

What to do before your condition date

If your contract has a building and pest inspection condition, the date on it is your real deadline. Everything below needs to happen before it.

1. Read the inaccessible areas list first. If a large part of the underneath, the roof void or the subfloor wasn't inspected, the report is telling you what it doesn't know. That's a legitimate reason to ask for more access and a follow-up inspection.
2. Ask the vendor for treatment records. Any termite treatment, barrier or bait system, and the durable notice in the meter box. Damage with a treatment record is story one. Damage without one could be any of the others.
3. Get the damage assessed for what it means structurally. A pest inspector reports that damage is there. Whether a bearer, stump or wall frame is still doing its job is a question for your building inspector, or a builder or engineer if it's serious. Don't let "old damage" go unmeasured because it was labelled old.
4. Ask about conducive conditions. Leaks, poor drainage, garden beds against the walls, timber touching the ground. These are cheap to fix and they're the difference between a colony that stays gone and one that comes back.
5. Plan the first year before you move in. If there's no current termite management system, budget for one. Either way, book an inspection twelve months after you buy, and consider six months on a house with history.

How we inspect an old Nambour house

We do the pest side of a pre-purchase inspection and work alongside your building inspector. On an older stumped house, allow about an hour, sometimes more if the underneath is big or cluttered. We look at the timber, the stumps and ant caps, the subfloor, the roof void where it's safe to access, and the ground around the house, and we scan walls with Termatrac and a moisture meter rather than drilling. The report tells you plainly what we saw, what we couldn't see and why, and what we'd want to know more about if we were the ones buying.

For more general detail on what a pre-purchase inspection covers, see our pre-purchase building and pest inspections guide. For year-round work on Nambour homes, see Nambour pest control.

The honest summary

An old Nambour Queenslander with some termite history is normal, and it's not a reason to walk away from the house you like. But "no active termites found" is the start of a question, not the end of one. Find out which of the four stories you're looking at, get the damage measured, and fix the conditions that invited them in. Do it before the condition date, while the answers can still change the deal.