What Termite Nests Look Like, Where They Hide & What To Do Next

Finding a termite nest in your home is one of the most stressful discoveries a homeowner can face. Termites are silent, destructive, and capable of causing tens of thousands of dollars in structural damage before most people realise they are present.

Many homeowners search online phrases like “termite nest in house”, “termites nest in home”, or “what does a termite nest look like” only after they’ve already noticed damage — hollow timber, mud tubes, or strange marks on walls.

In this comprehensive guide, we’ll explain:

• What termite nests look like (inside and outside the home)
• Where termites build nests in houses
• The different types of termite nests found in Australia
• Warning signs of a termite nest in your home
• What not to do if you find one
• The safest and most effective treatment options

If you suspect termites at your property, early identification is critical.

What Does a Termite Nest Look Like?

One of the biggest challenges with termites is that most nests are hidden. Unlike ant nests or wasp nests, termite colonies are deliberately concealed to protect them from predators, light, and dry air.

Common appearances of termite nests:

• Mud-like or clay-coloured structures
• Packed soil mixed with chewed timber (known as “carton material”)
• Lumpy or uneven surfaces on walls or timbers
• Hollow or papery-sounding wood when tapped
• Mud tunnels running up walls, piers, or foundations

In many cases, homeowners never see the nest itself — only the damage it causes.

Termite Nest in Home vs Termite Nest in House – Is There a Difference?

People commonly search phrases such as termite nest in home, termite nest in house, termites nest in house, and termite nests in house.
From a pest-control and inspection perspective, they all mean the same thing — termites are active inside the structure or directly connected to it.

What Does a Termite Nest “In the House” Actually Mean?

A termite nest in a house or home does not always mean the main colony is physically built inside the walls. In many cases:

• The primary termite nest is located underground
• Satellite nests may form inside wall cavities, roof voids, subfloors, or structural timber
• Mud tunnels connect the nest to timber food sources throughout the home

If termites are nesting anywhere within the building envelope, the home’s structural timbers are at risk — even when the main colony is outside the house.

Where Do Termites Build Nests in Houses?

Termites are opportunistic and will build nests wherever moisture, shelter, and timber are available.

Common nest locations inside homes:

• Wall cavities
• Roof voids
• Subfloors
• Under concrete slabs
• Bathrooms and laundries
• Around leaking pipes
• Behind kitchens and wet areas
• Inside retaining walls or garden beds touching the house
• Trees & Tree Stumps

These areas provide:

• Darkness
• Stable humidity
• Protection from temperature extremes
• Easy access to timber

Types of Termite Nests Found in Australia

Subterranean Termite Nests (Most Common & Most Destructive)

Subterranean termites are responsible for the majority of termite damage in Australia. Their nests are typically located underground and are often completely hidden from view. A single colony can contain hundreds of thousands to millions of termites, which is why damage can escalate quickly once activity begins. These termites build mud tunnels to safely travel between the nest and timber food sources.
Subterranean termites frequently establish satellite nests inside homes, meaning structural damage can occur well away from the main colony.
⚠️ If you have a termite nest in your house, subterranean termites are the most likely cause.

Arboreal (Tree) Termite Nests

Arboreal termite nests are often visible, which makes them particularly alarming for homeowners. These nests are commonly found in trees, fence posts, power poles, retaining walls, and various garden structures around the property.
Although arboreal nests may appear to be “outside,” termites can easily bridge from trees to roofs, enter a home through fascia, eaves, or wall cavities, and travel across structures during wet or humid weather.
In coastal and bush-adjacent areas, arboreal termite nests are extremely common and pose a serious risk to nearby buildings.

Termite Mound Nests – Large Colonies Nearby

Termite mound nests are the most visually obvious type of termite nest and are commonly found in open ground, bushland, paddocks, and undeveloped areas. These mounds are built above ground and can house hundreds of thousands to millions of termites, supporting multiple feeding sites at once.
While mound nests are often located away from buildings, termites can travel long distances underground in search of food. If a mound is present on or near a property, termites may still access structures through soil contact, retaining walls, service penetrations, or concealed entry points.
A visible termite mound near a home is a strong indicator of active termite pressure in the area and significantly increases the risk of infestation if proper protection is not in place.

Signs of a Termite Nest in Your Home

Hollow-Sounding or Damaged Timber

Pest control technicians use specialised tools to detect internal damage not visible to the naked eye.

Termites eat wood from the inside out, leaving a thin veneer of timber or paint:

• Tap wooden structures with a screwdriver handle – hollow sounds indicate potential damage
• Wood that appears crushed or sunken at structural joints
• Timber that feels papery or breaks easily when probed
• Maze-like patterns under peeling paint or within exposed wood

Termite Noise: Clicking in the Walls

If you hear unexplained clicking in your walls, it may point to an active colony — professional termite inspections are essential to confirm and address the problem.

Termites are often heard before they are seen, especially in quiet rooms:

• Soldier termites bang their heads against timber to signal danger
• Produces a faint clicking, rustling, or tapping sound
• Most noticeable at night when the house is quiet
• Indicates termites are active inside walls, floors, or roof timbers
• Often overlooked until other visible signs appear

Cracked or Distorted Timber Surfaces

If you notice distorted or cracked timber around your home, it’s important to arrange a professional termite inspection service before the damage spreads further

As termites feed inside timber, the outer surface can blister or warp:

• Timber that looks buckled, blistered, or uneven on the surface
• Paint finishes that appear rippled without any water damage
• Wood that flakes or collapses easily when scraped
• Skirting boards, window frames, and flooring often affected
• A clear sign that termites are eating timber from the inside out

Why Termite Nests Are So Dangerous

A mature termite colony can cause extensive and costly damage by feeding on the timber components that hold a home together. Because termites consume timber from the inside out, damage often remains hidden until it becomes severe.

Common materials and areas affected include:

What NOT to Do If You Find a Termite Nest

🚫 Do not spray insecticide
🚫 Do not break open the nest
🚫 Do not remove mud tunnels
🚫 Do not disturb live termites

DIY treatments almost always make the situation worse.

When termites are disturbed, they:

• Retreat deeper into the structure
• Establish new satellite nests
• Avoid treated areas
• Continue feeding undetected

Professional termite control relies on non-repellent strategies that eliminate the colony without alerting it.

What To Do If You Suspect a Termite Nest

If you think there may be a termite nest in your house or home, take the following steps immediately:

How Professional Termite Nest Treatment Works

Effective termite control focuses on eliminating the colony, not just killing visible termites.

Treatment methods may include:

• Non-repellent chemical barriers
• Direct nest treatment
• Termite baiting systems
• Ongoing monitoring and inspections

All professional treatments should comply with Australian Standard AS 3660.

Can a Single Termite Nest Destroy a House?

Yes — absolutely.

A single termite nest can house hundreds of thousands, and in some cases millions, of termites working continuously. These colonies feed on timber 24 hours a day, often causing serious structural damage within a matter of months, not years. Walls, floors, roof timbers, and load-bearing structures can all be affected as termites hollow timber from the inside out.

Because termite activity is silent and concealed, many homeowners are unaware of the problem until visible damage appears or structural integrity is compromised. In many cases, by the time a termite nest is discovered, repairs are already extensive and costly.

Are Visible Termite Nests a Good or Bad Sign?

Visible termite nests are almost always a bad sign.
When a nest can be seen, it usually indicates a mature termite colony that has been active for an extended period of time.

Visible nests often suggest:

• Long-term termite activity rather than a recent infestation
• The presence of satellite nests within walls, roof voids, or subfloors
• An increased risk of serious structural damage to nearby buildings

In most cases, a visible termite nest means termites have already been active for months or even years, not just weeks. Immediate professional assessment is critical to determine the extent of activity and prevent further damage.

Final Thoughts: Don’t Ignore the Signs

If you suspect a termite nest in your home or house, time is critical. Termites don’t stop feeding, and damage only gets worse the longer they remain undetected.

Professional identification and treatment are the only reliable way to eliminate termite nests safely and effectively.

If you’re unsure, it’s always better to check early than repair late.