What we look for in Coodanup, and why it differs from the suburb next door. 68.1 km from the CBD, 3.8 km from the coast, postcode 6210.
Coodanup sits where the Serpentine River meets the Peel Inlet. It was established in 1956. Private jetties near the river mouth are part of the character of the place, along with the crabbing and fishing that go with them.
River mouth ground is the defining condition here. Everything else follows it. Where a river meets an inlet you get alluvial deposits, a water table that moves with both the river and the tide, and soft variable soils on the low foreshore parcels. That is a genuine footing consideration rather than a footnote.
Jetties and foreshore structures need thinking about separately. Timber jetties, boat ramps and retaining come with some properties, and they are exposed to water, weather and marine organisms in ways a house is not. Their condition, and who is responsible for maintaining and licensing them, is worth establishing before purchase rather than after a structural failure.
The oldest stock dates from 1956, which puts it around seventy years old. On that generation, asbestos era materials are likely in anything unrenovated and the original services are long superseded.
Later infill sits among it, so the era range is wide and dating a property comes first.
Estuarine exposure means salt-laden damp attacking brickwork and fixings from the ground and the air, and delignification is a moderate rather than leading concern on tiled roofs here.
An estuarine river mouth is permanently damp ground, and moisture is the one thing a colony cannot do without. The low foreshore parcels sit at meaningfully higher pressure than the inland blocks.
Jetties are the local exposure most suburbs do not have. Timber, in water. Structural timber in permanent contact with wet ground. Often untreated. Often decades old, and sitting within metres of a dwelling.
On the 1956-era housing the subfloor comes first where floors are timber, and on low ground access can be genuinely difficult. We report the limits rather than glossing over them.
Barriers on stock of that age are generally absent rather than expired.
Boat sheds and storage structures near the water deserve the same attention as the jetty. They are usually timber, usually old, and usually sitting directly on ground that never dries out properly.
Water explains most of what both reports find on a river mouth property, so assessing how wet a site gets serves each of them. Reported under AS 4349.1 and AS 4349.3.
If a property comes with a jetty, have it assessed as a specific item. Marine structures are expensive to replace, they carry licensing obligations, and they fall outside a standard building inspection entirely, so nobody looks at them unless asked.
On the older stock, buyers intending to renovate want the asbestos position understood before setting a budget rather than partway through the work. On 1956-era housing it is likely rather than merely possible, and knowing where it sits changes what any renovation is going to cost. Foreshore blocks also benefit from understanding the flood and tidal context, which is knowable from public mapping and worth reading before an offer rather than after one.
Coodanup 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 Coodanup:
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.
Dudley Park, Furnissdale and Greenfields sit on the same ground as Coodanup, 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.
Mandurah is 2.7 km away but sits on the Quindalup dune system; Mandurah East is 2.7 km away but sits on the Quindalup dune system; Halls Head is 3.8 km away but sits on the Quindalup 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 Coodanup 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 →
At 3.8 km from the water, Coodanup sits inside the coastal-salt band, in postcode 6210, the fee here is spent chasing salt. Chemical delignification in the tile battens, wall ties rusting inside the cavity, fixings going to lace where the sea air reaches them — on an older tiled roof the roof space is where most of the inspection time lands. Coodanup is 68.1 km from the Perth CBD, out toward the Peel end of the area, and the flat fee still applies with no distance loading.
Pre-purchase building inspection in Coodanup →
Building and pest inspection in Coodanup →
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.
Coodanup is 3.8 km from the coast, inside the band where delignification should be expected in tile battens. On a tiled roof more than about ten years old it is one of the first things we look at.
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