What we look for in Alexander Heights, and why it differs from the suburb next door. 14.0 km from the CBD, 10.7 km from the coast, postcode 6064.
Alexander Heights is the elder of the northern suburbs around it. Established in the 1980s, after a decade under the name Alinjarra, its housing is now around forty years old. That puts it a full generation ahead of the 2000s estates nearby.
Forty years means the stock has moved past its first maintenance cycle and into a second. Roofs and gutters have often been replaced once already. Hot water systems and wiring are due again. Wet area waterproofing from the 1980s is typically at or beyond the end of its life, and shower leaks in houses of this age are among the more common and more expensive things we find.
The suburb backs onto Koondoola Regional Bushland, so properties along that edge carry a bushfire consideration and the mature melaleucas and grass trees nearby bring established root systems into contact with decades old drainage and footings. Worth looking at on the leafier streets.
To the north, Landsdale and Darch hold the district's main manufacturing areas, so connecting roads carry heavy vehicles and northern blocks pick up some industrial edge context. Alexander Heights also has a real rental component, which tends to bring deferred maintenance and unrecorded alterations. Both are worth tracing before you buy.
The bushland edge is the distinguishing factor. Retained vegetation does not move. Koondoola Regional Bushland is continuous native vegetation holding established colonies, and properties backing onto it face steadier foraging pressure than a fully cleared street a kilometre away.
On top of that sit the ordinary drivers of a forty year old suburb. Gardens. Paving. Time. Original barriers from the 1980s stopped working long ago. Gardens have had four decades to accumulate buried timber and old stumps. Reticulation keeps soil damp against footings. Most houses here are slab on ground, so the perimeter and slab edge are the focus, particularly under patios and additions. Rental properties are worth extra care, because a tenant reports a blocked drain but rarely reports mud leads on a garden wall.
On a reserve edge block the two inspections ask related questions. One boundary, twice. What condition the timber is in. What is being encouraged toward it. One attendance covers the roof space, the perimeter and the bush boundary together, which is more useful than two separate visits forming separate views. Reported under AS 4349.1 and AS 4349.3.
Forty year old houses on decent blocks attract renovation and subdivision, so we do building stage inspections and practical completion inspections on new homes going up behind older ones. Dilapidation reports apply where that work happens next to an established house.
We also do a fair amount of pre-settlement inspection work here, which matters more on tenanted properties than most buyers realise. A house that has been rented for years can change noticeably between the final inspection and settlement, particularly once the tenant has moved out and the furniture is gone.
If you are buying here to renovate, get the roof and the wet areas assessed before you set a budget. On forty year old housing those two items account for most of the unpleasant surprises, and both are easier to price accurately than to discover halfway through.
Alexander Heights was established in the 1980s, which makes it markedly older than the 2000s estate suburbs around it, and that is the first thing to hold in mind on an inspection. The stock is now around forty years old, past a first cycle and into a second: original roofs and gutters have often been replaced once already, hot water and wiring are due again, and 1980s-era wet-area waterproofing is typically at or beyond end of life. So the job here is less about new-build defects and more about reading what has already been renewed against what is now overdue for a second time.
The suburb borders Koondoola Regional Bushland, so reserve-edge blocks carry termite pressure from the adjoining native vegetation and a modest bushfire consideration, and the mature melaleucas and grass trees mean established root systems working near older drainage and footings. Manufacturing areas immediately north in Landsdale and Darch bring heavy-vehicle traffic on the connecting roads and some industrial-edge context on the northern blocks. With a diverse, mobile population and a fair amount of rental stock, expect deferred maintenance on tenanted homes and renovations to trace for approvals. Ten kilometres inland, salt and delignification are low priority; the Alexander Heights story is second-cycle ageing, reserve-edge pressure, and the industrial edge to the north.
On a typical Alexander Heights home the inspection reads a suburb into its second cycle. Roofs and gutters have often been renewed once, so we check the quality and age of that work as much as the original, while the hot water system, switchboard and wiring are frequently back to end-of-life. The 1980s wet-area waterproofing is a priority, since membranes of that vintage rarely survive forty years intact. On reserve-edge blocks near the Koondoola bushland the subfloor and perimeter are read for termite pressure, and on tenanted homes the deferred maintenance and any owner-era additions are traced, since rental stock is where those findings concentrate.
None of it is guesswork. Reading the stock above into an inspection, these are the checks the Alexander Heights pattern pushes to the top of the list:
Alexander Heights sits on the Bassendean dune system — deep leached grey quartz sand, almost pure, and very free draining. Bassendean sand is about as unreactive as a building site gets, so seasonal footing movement is rarely the story here. The water table is the story. Parts of this system sit over the Gnangara Mound and the standing water level can be within a couple of metres of the surface.
What that means in practice, on a house in Alexander Heights:
Landform is assigned from the suburb's position on the Swan Coastal Plain rather than from a site soil test. It tells you what to expect, not what you have. A site classification to AS 2870 is a different exercise and a different report.
Alexander Heights Park is the fixed point most people in Alexander Heights navigate by. Buildings like it are useful to an inspector for a duller reason: they date the area. Whatever era put that up is usually the era that put up the houses around it, and the construction methods of that decade are what we expect to find in the roof.
Koondoola, Landsdale and Ballajura sit on the same ground as Alexander Heights, so the footing behaviour and the drainage problems tend to repeat across all of them. If you are comparing houses across those suburbs, you are largely comparing the same site conditions.
Marangaroo is 2.4 km away but sits on the Spearwood dune system; Darch is 2.6 km away but sits on the Spearwood dune system; Girrawheen is 3.0 km away but sits on the Spearwood dune system. That is the useful thing about this part of Perth: the ground can change inside a few kilometres, and with it what an inspection is looking for.
On site classification: any soil zone quoted for a suburb is indicative, inferred from geography rather than surveyed. A real AS 2870 classification comes from geotechnical work on your actual block and can differ from the one next door. We report what we observe; we do not read your soil class off a map.
The inspection is visual and non-invasive, over the readily accessible areas, reported to AS 4349.1. Our inspectors physically enter the roof space, as long as there is sufficient access. Report within 24 hours of the inspection.
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Flat fee, the same in Alexander Heights as anywhere: $440 inc. GST for a pre-purchase building inspection, or $616 inc. GST with the timber pest scope added in the same visit. Full price list →
10.7 km inland through Wanneroo, coastal salt is not the first thing an inspection in Alexander Heights chases. The fee buys closer work on footing movement, site drainage and the reactive-ground behaviour of the North West suburbs, with delignification checked only where a tiled roof meets a busy corridor.
Pre-purchase building inspection in Alexander Heights →
Building and pest inspection in Alexander Heights →
Yes. Our inspectors physically enter and inspect the roof space, as long as there is sufficient access to do so safely. Where access is restricted, the report says so plainly rather than implying we saw more than we did.
At 10.7 km inland, Alexander Heights carries lower coastal-salt exposure, so delignification is not the first thing we would expect. It remains possible near heavy arterial corridors or industrial emissions.
Within 24 hours of the inspection itself, not 24 hours from booking. On a pre-purchase or pre-settlement job that timing is the whole point, because your leverage disappears once you are committed.
We would rather you checked than took our word for it. These are the bodies that actually hold the records and set the rules:
Tell us about the property and what you need. We'll come back to you with a firm quote and a time.
PERTH