What we look for in Westminster, and why it differs from the suburb next door. 9.7 km from the CBD, 7.4 km from the coast, postcode 6061.
Westminster is the third of the Mirrabooka Project suburbs, developed by the State Housing Commission from the late 1950s into the 1960s. It sits about nine kilometres north of the city, between the older Nollamara and the newer estates further out.
State Housing Commission stock of that era is single detached brick and tile, with grouped dwellings and flats mixed through it. That mix matters, because a grouped dwelling brings shared walls, shared drainage and a strata arrangement into what buyers often assume is a straightforward house purchase.
Establish which you are looking at first. House or grouped dwelling.
At sixty years the recurring items arrive together. Roof fabric and roof plumbing. Hot water. Wiring approaching or past its expected life. Wet area waterproofing well beyond a second cycle. Asbestos era materials in anything unrenovated.
Being close in and affordable puts real subdivision and infill pressure on the suburb, so an original Commission house frequently sits beside a new duplex. Those are different buildings, different eras and different lists, and the boundary between them brings shared driveways and re-routed drainage that need reading properly rather than assuming.
There is a high rental and social housing share, which brings deferred maintenance and informal additions to trace.
Inland, so salt and delignification are a low priority here.
Grouped dwellings introduce a problem that detached housing does not have. Where dwellings share a wall, a colony can move between them through structure that neither owner can fully see, and treating one side without the other is rarely effective.
Access to a shared subfloor or roof space may need a neighbour's cooperation, and in a strata arrangement responsibility for termite management often sits with the scheme rather than an individual owner. Establish who acts before something is found rather than after.
On the detached stock the drivers are the usual ones for sixty year old public housing. Expired barriers rarely replaced, gardens with decades of buried timber, and slab edges buried under patios and paving added at various points by various occupants.
On an attached or grouped dwelling, coordinating access is the awkward part of any inspection, and arranging it once for both assessments is worth real inconvenience avoided. Reported under AS 4349.1 and AS 4349.3.
On a grouped dwelling, establish what is yours and what is common property before you buy. Buyers of former Commission stock regularly discover that boundary at the worst possible moment, which is usually when something has already failed and two owners disagree about whose it was.
Subdivision brings condition records for the original house during excavation next door, staged inspections during the build, and handover checks at completion. Additions on stock of this age frequently lack approval, and tracing them is routine work rather than an extra.
Where a property is a grouped dwelling, read the strata records before the contract. What the scheme has spent, and what it has put off, will reach you through levies regardless of which unit the defect happens to sit in.
Westminster is State Housing Commission stock from the late-1950s-60s, old post-war public-housing fabric now around sixty years old, built to ex-Homeswest patterns with asbestos-era materials possible on the earliest homes. Where that original fabric survives, its structure, services and asbestos content are the priorities, and the ex-public-housing construction has its own patterns worth recognising. There is a high rental and social-housing share, so deferred maintenance and informal additions are common findings, exactly the sort of thing an inspection is for.
Being close-in and affordable, Westminster is under subdivision and infill pressure, so you find an old SHC house beside a new duplex, which is two different inspections and, where works adjoin, a case for a dilapidation record. Inland, salt and delignification are low priority. A Westminster inspection reads the sixty-year-old SHC fabric with its asbestos likelihood and deferred maintenance, the informal additions to trace, and the old-house-beside-new-infill pattern that its close-in, affordable position has produced. The post-war public-housing origins are the defining thing here, much as in neighbouring Balga and Nollamara.
On an original Westminster home the inspection reads genuinely old post-war fabric: the late-1950s-60s switchboard and wiring near or past end of life, plumbing due for renewal, and wet areas long past a membrane standard. Ex-Homeswest construction patterns are read as they present, and asbestos-era materials on the earliest stock are noted for licensed assessment. Where close-in infill pressure has produced a new duplex beside an old SHC house, the inspection shifts to that stock's strata picture, and where a home adjoins active works a dilapidation record beforehand is worth having. The informal additions that rental-heavy stock accumulates are traced for approval and workmanship.
None of it is guesswork. Reading the stock above into an inspection, these are the checks the Westminster pattern pushes to the top of the list:
Westminster sits on the Spearwood dune system — residual yellow and grey sand over a Tamala Limestone core, with the rock often close to the surface. Limestone near the surface makes for stable footings and expensive excavation. Where the rock is shallow, older houses often sit directly on limestone footings, and those are the ones to look at for rising damp and salt damp at the base of the wall.
What that means in practice, on a house in Westminster:
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.
Balga, Nollamara, Girrawheen, Balcatta and Hamersley sit on the same ground as Westminster, 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.
Mirrabooka is 2.4 km away but sits on the Bassendean 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.
MISSING: phone number · Book an inspection in Westminster →
Flat fee, the same in Westminster 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 →
7.4 km inland through Wanneroo, Westminster sits between the coastal and inland problems, and the fee reflects it — some salt-corrosion checking on an older tiled roof, but more attention to drainage, wet areas and ground movement across the Wanneroo area.
Pre-purchase building inspection in Westminster →
Building and pest inspection in Westminster →
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.
Westminster is 7.4 km from the coast — outside the highest-exposure band, but close enough that salt-driven delignification is worth checking in an older tiled roof.
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