Updated October 2026
Roleystone is hills country in the City of Armadale, named on the primary record among the localities sitting at the Darling Scarp's western edge alongside Gooseberry Hill and Darlington. Steep, treed blocks, and plenty of retaining. We connect you with builders who cover the 6111 area.
Common wall situations in Roleystone
Real slope, so real walls. Driveway cuttings on climbing or falling approaches, terracing a block into usable levels, pads for sheds and studios, and replacing walls that have slowly lost on ground that never drained. Machine access is frequently the deciding factor on method and price.
Whether your block is on reticulated sewerage or running its own system is worth establishing before a machine arrives, because where a tank, leach drains or an irrigation area sit decides where the wall line can go, where spoil can be stacked and where its drainage can discharge. Your local government holds the records for your address.
The ground under Roleystone
The substrate is the thing that makes a quote here different from a quote on the plain. Lateritic gravel and ironstone over weathered granite, with the rock close enough to the surface that the City of Kalamunda cites it in writing as the reason sewerage is costly to run through the Hills. Post holes can hit it, and that changes the method, the machine and the price.
Ask what the quote includes behind the wall. Ag-pipe at the base, free draining gravel rather than the spoil that came out of the hole, geotextile fabric so the drain cannot silt up, and somewhere lawful for the water to go. Water, not weight, is what fails walls here.
What a wall costs in Roleystone
Published Australian cost guides put a wall about a metre high somewhere between roughly $200 per metre for timber and $700 or more per metre for stone and engineered block. Treat that as a band to sanity-check a quote against, not a price. The retaining wall cost guide explains what moves it here, rock included.
Approval, and who to ask in Roleystone
The WA permit line is 500mm, and it is measured as the ground the wall retains rather than the height of the wall itself. The exemption also requires that the wall is not associated with other building work or with holding up the land next door, and is not work of a kind affecting adjoining land. Fail any one of those and a building permit is needed at any height, which is why boundary walls almost always need one. Development approval can be a separate question. the City of Armadale is the permit authority here, so check your wall with them first.
Who is allowed to build it is a statutory question in WA, and it turns on how the work is classified under the building legislation rather than on a figure you can look up and apply yourself. We are not going to settle that on a web page. What is worth doing is simple: ask the builder what registration or licence they hold, check it with Building and Energy, and ask your permit authority what your particular wall requires before you sign anything. Before any digging, your builder should lodge a free Before You Dig Australia (BYDA) enquiry so underground services are located.
Frequently asked questions
Is Roleystone part of the Perth Hills?
Geologically, yes. Roleystone is named on the primary record among the localities at the scarp's western edge, and the City of Armadale puts the words Perth Hills on its own visitor centre. The suburbia below the scarp is a different proposition.
What does the slope do to the price?
It raises the wall height, which is the biggest cost lever, and it can restrict machine access, which is the second. Both get assessed on site before any number is useful.
Who approves the wall?
The City of Armadale, as permit authority. The WA test is 500mm of retained ground, measured as the ground retained rather than the wall height, with the two other conditions on top.
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We also cover nearby Karragullen and Bedfordale.