Both scopes in one visit — building to AS 4349.1, timber pest to AS 4349.3. The fuller check, by a registered building contractor. Report within 24 hours.
Thornlie was built in stages, and the stage matters almost everything in a building and timber pest inspection here. The suburb was one of the first in WA to be sold by house-and-land package, opening in the late 1950s on the former Thornlie Park dairy farm, and it grew outward in five identifiable stages over the following decades: the 1950s and 1960s north-eastern estate first, then the 1970s and 1980s south and Crestwood areas, then Castle Glen in the 1980s, and Forest Lakes from the 1980s to the present, built around artificial lakes. Each of those stages is effectively a different suburb in terms of age, construction standard and ground, and an inspection at Thornlie starts by identifying which stage the home belongs to.
The 1950s and 1960s north-eastern homes are the oldest. Built as first-home-buyer middle-income stock in the house-and-land era, they are now sixty to seventy years old, and the original components from that build programme are at the end of their life: the tile roof and its mortar beds, the original single bathroom, and the wiring and switchboard where these have never been updated. These are sound homes that were built to the modest-but-solid standard of that era, but the standard of that era did not include renewal on a fifty-year horizon and they are now there.
The 1970s and 1980s south Thornlie and Crestwood homes are at forty to fifty years, the age where the original waterproofing installed to the pre-AS 3740 standard is approaching its limit. The pre-purchase read on those homes is the same as in Success and Yangebup: a shower that was sealed once in 1979 has been in continuous use for forty-five years.
The Forest Lakes homes are the newest, some built in the last decade, and those around the artificial lakes carry the lake-proximity moisture context we have seen in Wattle Grove. A constructed lake maintains a higher water table near its edges, and the subfloor and wall bases on lake-perimeter blocks reflect that ongoing moisture.
The Canning River runs along the suburb’s northern edge, adding the same low-ground moisture read for blocks in that part of north-east Thornlie that applies in Gosnells to the south-east.
The timber pest side follows the stages. The oldest 1950s and 1960s homes with established gardens and original subfloors carry the highest risk, and the lake-perimeter blocks in Forest Lakes add their own sustained moisture. We read subfloor, roof void and perimeter carefully.
What you get is a plain reading of the Thornlie home in its stage and on its ground, with the report inside 24 hours and the real defects separated clearly from the cosmetic.
We run the same two-scope visit across the area, including nearby Gosnells and Canning Vale.
MISSING: phone number · Book online → · Flat $616 inc GST for both scopes, report within 24 hours.
Its five-stage development history. The suburb spans 1950s-60s first-home-buyer estates to 1980s-onward Forest Lakes builds around artificial lakes, and each stage has a different age, construction standard and ground, so the stage determines the read.
At sixty to seventy years, the tile roof and its mortar beds, the original single bathroom, and the wiring and switchboard are at the end of their original life, expected findings at this age in a first-home-buyer build programme.
At forty to fifty years the original pre-AS 3740 waterproofing is approaching the end of its life. A shower sealed in 1979 has been in continuous use for forty-five years, and failure begins behind the tiles before it shows.
A constructed lake maintains a higher water table near its edges. Homes on lake-perimeter blocks in Forest Lakes sit on permanently wetter ground, and we read the subfloor and wall bases with that sustained moisture in mind.
The northern edge runs along the Canning River, and blocks in that part carry the same low-ground moisture read as the river-flat parts of Gosnells to the south-east.
Broadly: north-east Thornlie is the oldest (1950s-60s), south Thornlie and Crestwood are the 1970s-80s, Castle Glen is the 1980s, and Forest Lakes is the 1980s to present. The build year on the title is the clearest guide.
Yes. The 1950s-60s homes with established gardens and original subfloors carry the highest risk, and the lake-perimeter blocks in Forest Lakes add their own sustained moisture condition.
Yes. The building inspection to AS 4349.1 and the timber pest inspection to AS 4349.3 are done in one visit, with a single report within 24 hours.
A flat $616 inc GST for both scopes, report within 24 hours.
Yes. We read each home on its own stage and its own ground, rather than applying a single Thornlie standard across all five.
Buying in Thornlie? A pre-purchase building inspection — building scope only, report within 24 hours — gives you the documented record before exchange.
Pre-purchase inspection →Our office is at Suite 55, 15 Labouchere Road, South Perth WA 6151 — on the Swan River foreshore near the Perth Zoo.
Tell us about the property and what you need. We'll come back to you with a firm quote and a time.
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