Common Pests on Craigieburn New Estates
What a Highlands, Aston or northern-release home typically faces in its first few years, and how we handle it.
Written by Muzi Tsolakis, Founder and Competency Assessor, Pest Management Victoria. Last reviewed 18 July 2026.
Craigieburn's newer pockets, Highlands, Aston and the releases further north, share a pattern that anyone who has moved into a first-year build will recognise. The land was paddock or grassland not long ago, the garden is still finding its feet, and the house itself is brand new with none of the sealing and settling that an older home has already been through. That combination brings a fairly predictable set of pests through the door, and knowing what to expect makes them far easier to deal with early rather than after they have properly settled in.
Rats and mice moving in from the paddocks next door
Before the estate went up, the block and the land around it supported a rodent population that had never needed to come near a building. Once the earthworks start and the surrounding paddocks or drainage reserves are disturbed, that population looks for somewhere new, and a freshly built home with wall cavities, a garage full of moving boxes and gaps still to be sealed around new plumbing and cabling is an obvious option. It is common for the first sign, droppings in the garage, a scratching noise in the roof space at night, or gnawing on stored cardboard, to turn up well within the first year of moving in.
Because these are wild populations rather than an established household infestation, the fix is usually straightforward once it is caught: identifying and sealing the entry points a new build tends to leave open, combined with baiting, clears them before they establish a permanent nest inside the roof or subfloor.
Ants along fresh paving and slab expansion joints
New driveways, paths and alfresco paving come with long expansion joints and freshly disturbed soil on either side, both of which suit trail-forming ants very well as a nesting site. Black house ants and coastal brown ants are the species we see most often on Craigieburn's newer streets, following a joint or a gap along the slab straight to a kitchen or laundry door. A thin, first-year garden bed offers little shade or ground cover to slow them down, so the trail from a neighbouring vacant block or the nearby reserve can run remarkably directly to the house.
Treating the visible trail rarely holds for long on this kind of land, because the colony itself sits along the paving or under the slab edge rather than anywhere a homeowner can easily reach. A treatment aimed at the nest, rather than the ants crossing the kitchen bench, is what actually settles it.
Spiders around new garages, eaves and pergolas
A new garage, an eave that has not yet been disturbed by weather, and a fresh pergola all give spiders sheltered, undisturbed corners to build in well before the household has settled into a routine of using that space. Redback spiders in particular favour the dry, protected gaps around garage shelving, meter boxes and the underside of new outdoor furniture, and a first-year Craigieburn yard, with fewer birds and less garden activity to disturb them, can let a web sit unnoticed for weeks. Huntsmen and white-tailed spiders turn up too, usually drawn in from the surrounding grassland as it is cleared.
A regular check of the garage, eaves and any pergola or outdoor storage area through spring and summer catches most of this before it becomes a concern, and a professional treatment around these same areas gives longer-lasting protection than an occasional web clear-out.
Paper wasps and European wasps through the summer
A new pergola, an eave return or a garage roller door recess is an ideal spot for a paper wasp queen to start a nest in spring, and by the time a Craigieburn summer is in full swing, that small papery start can have grown into something that stings anyone walking past. European wasps are drawn to the same kind of settling, still-disturbed ground that a new estate provides, and their nests are often underground or hidden inside a wall cavity rather than out in the open. Both species build up fast once the weather turns warm, so a nest first noticed in October is worth acting on rather than waiting until the family is using the pergola every weekend in January.
Nests found early are a far smaller job than nests found in February, and neither species is one we recommend a homeowner approach without the right protective equipment.
Worth booking while the land is still settling
Beyond the pests above, land that was recently paddock or grassland carries a background risk of termite activity that a subdivision does not remove, it simply moves the timber and old tree stumps termites were using somewhere else nearby. We do not treat termite control as the focus of a new-estate job, but an annual inspection from the first year of owning a Craigieburn build is a sensible, low-cost precaution worth adding to the same visit as the pests above rather than leaving until a problem shows itself.
How Protech handles a Craigieburn new-estate job
Our Campbellfield base sits minutes south of Highlands, Aston and Craigieburn's northern releases, so a same-day or next-day visit is straightforward to schedule across the whole growth corridor. A typical Craigieburn call-out for a new-estate home covers the ground above in one visit: checking the roof space and subfloor for signs of rats and mice, treating ant trails and nests around the paving and slab edges, clearing and treating spider activity around the garage, eaves and any pergola, and dealing with any wasp nest found while we are there.
Every general treatment is backed by our pest-free guarantee, and we are happy to talk through what to expect in the first couple of years of a new build before anything has actually shown up. Our pest library has more detail on each of the pests above if you want to look further into what you are dealing with. To book a visit or ask a question first, call our Melbourne team on 03 9449 4244 or request a free quote.
Craigieburn new-estate pest FAQs
Why do new Craigieburn homes get rats and mice so soon after the estate is built?
A freshly built home on former paddock or grassland sits right next to the habitat the local rodent population already used before construction started. Clearing and levelling the land disturbs their existing burrows and food sources, and a new house with warm wall cavities, a garage full of stored boxes and an unlanded garden is an easy replacement. It is common for a Highlands or Aston property to see its first mouse within the first year, well before the garden has established enough to change that.
Why are there so many ants in the paving and around the driveway on a new estate?
Fresh concrete and paving create long, straight expansion joints and slightly disturbed soil either side of them, both of which suit species such as black house ants and coastal brown ants very well as nesting sites. New estates also tend to have young, thin garden beds with less established ground cover, so ants moving in from a neighbouring vacant block or reserve have a clear, sun-warmed path straight to the house.
Do I need a termite inspection on a brand-new Craigieburn build?
Yes, and sooner than most new owners expect. A new home on former agricultural or grassland means any timber, retained tree stumps or old fence lines nearby can carry termite activity that simply relocates once the ground is disturbed, and the property itself has had no history of inspection at all. An annual check from the first year onward is the standard, sensible precaution on this kind of land.
Why are paper wasps and European wasps such a problem around new pergolas and garages?
A new pergola, eave or garage roller door gives a wasp queen a sheltered, undisturbed corner to start a nest in spring, and a first-year garden rarely has enough established growth to make the yard less attractive to her. European wasps in particular are drawn to underground and wall-cavity cavities that new estate soil, still settling after construction, can provide. Both build up quickly through a Melbourne summer, so a small nest in October is worth dealing with well before December.
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