Possum Box Installation - State-Approved, Professionally Fitted
Possum box installation gives displaced roof possums a legal, humane alternative den. We install state-approved possum box systems across Sydney, Melbourne, Brisbane and Perth using the correct species sizing, height, and placement for reliable adoption.
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What Is a Possum Box?
A possum box - also called a possum nesting box or possum house - is a purpose-built timber cavity designed to replicate a tree hollow. It gives urban possums a safe, weatherproof, elevated den as an alternative to your roof cavity. Possum boxes are approved and recommended by wildlife authorities in NSW, VIC, QLD, and WA as the most effective method of humane possum relocation.
Urban development across Australian cities has eliminated the vast majority of hollow-bearing trees that brushtail possums rely on as natural dens. In suburbs like Sydney's Inner West, Melbourne's inner east, Brisbane's southside, and Perth's northern corridor, there are virtually no natural tree hollows left, which is exactly why possums move into roofs. A possum nesting box directly solves that habitat gap far more effectively than vague deterrent products or one-off relocation logic.
When possum box installation is paired with lawful roof exclusion after removal, adoption rates improve dramatically. That is why we often combine the work with licensed possum removal and follow-up proofing rather than treating the box as a separate decorative add-on.
A possum box alone cannot solve a roof infestation — it is an alternative den, not an eviction tool. Licensed possum removal must clear the roof cavity first, and professional possum proofing must seal all entry points so the box becomes the only viable shelter option rather than a decorative addition next to an accessible roof cavity.
3 Types of Possum Boxes We Install
Brushtail Possum Box
A brushtail possum box is the larger format used for the cat-sized roof invaders most people are dealing with after ceiling or cavity removal. It needs the right internal dimensions, a larger entrance, and enough thermal mass to remain stable through weather changes.
Ringtail Possum Box
A ringtail possum box is smaller and sized for a different behavioural profile. Ringtails often prefer denning patterns that are closer to dense foliage, so both species size and placement logic matter if the box is going to be used rather than ignored.
Strata Possum Box
A strata possum box is used where shared buildings need alternative habitat close to the release zone but tree access, body corporate approval, or installation height need more planning than a standard backyard job. These are common after shared-roof removals on apartment and townhouse sites.
Bunnings Possum Box vs Professional Installation
The biggest issue with a Bunnings possum box is usually not the timber box itself. It is everything that happens after purchase. Flat-pack or off-the-shelf units often sit in the $80-$180 range and can be useful for general wildlife gardening, but homeowners routinely install them at the wrong height, with the wrong entrance size, in the wrong tree, and without scent conditioning. That is why many never get used.
Professional installation is different because the box is only one part of the outcome. We assess the target species, use the correct box dimensions, install it at the right height, orient it to avoid poor weather exposure, and where appropriate transfer nest scent material from the original roof den. That last step is one of the biggest reasons professional jobs outperform generic DIY possum house installs. So yes, a Bunnings possum box may be cheaper at the counter, but a cheap box in the wrong place is not actually a cheaper solution if the possum never adopts it and keeps trying to re-enter the roof.
For a detailed guide on possum box dimensions, installation, and maintenance, see our complete possum box guide. For an honest review of commercial options including the Bunnings possum box review, we compare what works and what does not.
Why It Matters
Why Possum Box Installation Is Essential After Removal
Why Possum Box Installation Is Essential After Removal
Required or Strongly Recommended
Wildlife authorities commonly recommend, and in some contexts effectively expect, a suitable alternative den after roof removal work. A possum nesting box satisfies that requirement far better than simply hoping the animal finds something else.
Reduces Re-Entry Risk
A resident possum with a safe alternative den nearby has far less reason to challenge a sealed roofline again. That is why box work is such a useful companion to proofing.
Supports Urban Wildlife
A possum box replaces lost tree-hollow habitat directly. In dense suburbs, that makes it one of the most practical coexistence tools available.
Part of a Complete Solution
Removal clears the roof. Proofing blocks re-entry. A possum house reduces the motivation to test the building again. The three functions work best together, not separately.
Important for Mothers and Joeys
When a female possum is carrying or caring for young, immediate nearby shelter matters much more than it does in a generic wildlife relocation discussion.
Works With Existing Gardens
Many properties already have a suitable tree or structure. The issue is choosing the right host location and installing the box properly so adoption is realistic.
How Much Does Possum Box Installation Cost?
Possum box installation usually ranges from $150-$350 depending on the box type, installation height, access method, and whether it is completed as part of a broader removal and proofing job. The box itself is only part of the cost — placement and access are what determine whether the install will actually work.
See our transparent pricing for more detail on what each box type and install method costs.
Step by Step
How We Install Possum Boxes - Our Process
Possum box installation is more than attaching timber to a tree. Correct placement, species sizing, height, and conditioning are what determine whether the box gets used.
Site Assessment & Box Selection
We assess the garden, nearby canopy, and species involved so the correct possum box dimensions and design are chosen. Brushtail and ringtail jobs are not interchangeable.
Tree and Height Selection
How high should a possum box be? The practical answer is minimum 4 metres, ideally 5-6 metres where the site allows it. Height matters because brushtails in particular prefer elevated, secure denning positions away from easy predator access.
Orientation & Weather Positioning
The entrance is oriented to reduce rain exposure and manage heat load. A box that cooks in afternoon sun or fills with weather will often be ignored, no matter how good the timber looks on day one.
Secure Tree-Safe Installation
We install using a tree-safe system rather than damaging the host tree. On strata or difficult sites, access planning is part of the job rather than improvised after arrival.
Scent Conditioning & Adoption Setup
We use nest material or scent transfer where appropriate because scent conditioning is one of the biggest differences between a professional possum box installation and a generic DIY box hanging in a tree.
State-Approved Possum Box Specifications
We use government-approved possum box designs that meet species-specific recommendations for size, durability, and weather performance. This section also answers many of the searches behind possum box dimensions, possum box plans, and how to make a possum box.
12-19mm Untreated Hardwood Timber
Thick timber walls provide insulation and durability without exposing the animal to treated-wood chemicals.
Brushtail Box Dimensions
Approx. 400mm H x 250mm W x 250mm D with a 120mm entrance hole. These possum box dimensions are suited to common brushtail use.
Ringtail Box Dimensions
Approx. 250mm H x 200mm W x 200mm D with a 70mm entrance hole, sized for common ringtail possums.
Hinged Inspection Lid
Allows annual cleaning and inspection, which is essential for long-term maintenance and safe reuse.
Weatherproof Roof Overhang
The roof extends past the entrance to reduce rain penetration and improve thermal stability inside the cavity.
Tree-Safe Strapping System
Mounting uses a system that protects the host tree rather than driving fixings through living bark.
Keys to Successful Adoption
Possum Box Installation Across Australia
We install possum boxes across all four major Australian cities, tailoring box type and placement to local species, climate, and site conditions.
Sydney
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Melbourne
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Brisbane
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Perth
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Not sure if we cover your suburb? Call 1800 482 916
Why Choose Professional Possum Box Installation
The wrong box in the wrong place is still the wrong solution. These are the reasons owners use a professional installation service instead of gambling on a generic retail box alone.
Wildlife-Trained Installation
We place the box where the possum is actually likely to use it, not where it is easiest to reach from the ground.
State-Approved Designs
Every box follows recognised sizing and design logic. No undersized decorative units and no guesswork about the entrance profile.
Tree-Safe Installation
We protect the host tree while still achieving a secure, elevated, weather-aware install.
Pairs With Removal Work
Possum box installation is available as a standalone service or integrated with removal and proofing for a more complete outcome.
Installation Documentation
We can document location, target species, installation height, and orientation for maintenance or strata records where needed.
Higher Adoption Logic
Correct height, placement and scent conditioning are the main reasons a professional install outperforms a box that is simply bought and hung.
Possum Box Installation - Frequently Asked Questions
How much does possum box installation cost?
Possum box installation usually ranges from around $150-$350 depending on the box type, installation height, access method, and whether it is being completed as part of a broader removal and proofing job. The box itself is only part of the cost. Placement and access are what determine whether the install will actually work.
Will the possum use the box?
Usually yes, if the box is the right size, in the right place, at the right height, and conditioned properly. Adoption is not magic. It depends on species fit, home-range placement, weather orientation, and whether scent material from the old den is used where appropriate.
Can I build my own possum box?
Yes, you can build your own possum box, and searches for how to make a possum box or possum box plans are common for that reason. The challenge is not just building the timber shell. Height, entrance size, placement, and scent conditioning are what determine whether the box is actually adopted, which is where many DIY attempts fail.
How high does a possum box need to be?
A possum box needs to be at least 4 metres high, and ideally 5-6 metres where site conditions allow. That height makes the box feel more secure to the animal and reduces easy predator access from ground level.
What if I don't have a suitable tree?
If you do not have a suitable tree, we assess alternative mounting options such as robust posts or building-adjacent structures, but a healthy elevated tree is still the preferred host whenever possible. The site has to work for the possum, not just for installation convenience.
Do possum boxes need maintenance?
Yes. Possum boxes should be inspected and cleaned periodically so old nesting material, damage, weathering, and strap condition can be checked. Ongoing maintenance is part of keeping the box usable long-term rather than assuming it will stay perfect once installed.
Install a Possum Box - Get a Quote
Give your resident possum a safe, legal alternative home and reduce roof re-entry risk permanently. Our possum box installations are professionally placed for real adoption, not just visual compliance.
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