Best retaining wall builders in Canning Vale & Gosnells (2026)
Table of Contents
These are the best-rated retaining wall builders working Canning Vale, Gosnells and Armadale, from Cannington, Wilson and Riverton through Thornlie, Gosnells and Maddington, down to Armadale, Kelmscott and Seville Grove. They’re ranked on real Google reviews, not on who paid us. This cluster’s genuine, locally-based operators are thinner on the ground than in some other parts of Perth, and none of the three that clear our bar is a dedicated retaining-wall-only business, two are landscapers and one is an earthmoving and excavation contractor. We also ran into an interesting data quirk building this page: a cluster of recurring “Perth [something]” named businesses turned up in every search across this whole rollout sharing an identical, address-free map location, a sign Google is showing a generic default pin rather than a genuine spot in this catchment, so we’ve left them out rather than guess. What follows is what a retaining wall actually costs in WA in 2026, why drainage behind the wall matters more than the wall face itself, when you need council approval and an engineer’s design, the warning signs of a dodgy job, and a checklist to run before you pay a deposit.
Featured retaining wall builders
These spots are for Canning Vale, Gosnells and Armadale retaining wall builders who want to stand out on this page. None are taken yet, so the full review-ranked list is right below. That ranking is earned off Google reviews and never for sale. Are you a retaining wall builder working this area? Featured spots start at $50 a year.
Get a Featured spot ▸How we ranked these
- Google reviews do the ranking. We start with every builder’s live Google star rating and the number of reviews behind it, pulled fresh from Google Maps.
- Rating, weighted by volume. A perfect score off a handful of jobs isn’t proof yet, so we weight the score by review count. Both ZLandscape and Diggermate carry huge, well-tested review bases (102 and 137), which is why they sit well clear of the smaller-based third name.
- Genuinely a thin verifiable market. We ran six separate Maps searches and lookups across this cluster. Several strong-looking names shared an identical, address-free map pin that turned up in searches for every suburb across our whole rollout, a clear sign of a generic default location rather than a real Canning Vale or Gosnells presence, so we’ve left them off this page rather than guess.
- Specialists are flagged, not hidden. None of the three below is a dedicated retaining-wall-only business. Two are landscapers, and one is an earthmoving and excavation contractor. We’ve told you plainly what each one specialises in.
- Genuine local operators, not suppliers. Materials suppliers and quarries are excluded, we only rank installers.
- Paid spots are labelled, and never jump the queue. When a business pays for a “Featured” spot it’s marked as such. The review-based order below does not change to favour a payer. Right now, no spots are sold.
ZLandscape Construction Z.L.C.
A clean 5.0 across 102 reviews, easily the deepest and most consistent record in this cluster. ZLandscape is a landscaping design-build firm, so retaining here typically comes bundled with a wider garden or outdoor-living project rather than as a standalone job, which suits homeowners planning a bigger backyard makeover.
View listing & contact ▸Diggermate Armadale
A 4.9 across 137 reviews, the single deepest review base of any operator on this page. Diggermate handles the digging, levelling and earthmoving that a retaining wall depends on, particularly useful on a cut-and-fill block in the more sloping parts of Armadale and Kelmscott. Not the crew to call for the finished wall face itself, but a strong option for the earthworks a bigger retaining job needs.
View listing & contact ▸GR8LANDSCAPES
A clean 5.0 across 9 reviews. A smaller review base than the two names above, but a perfect run so far and based right in the Armadale end of this catchment, worth a call if you’re further south in the cluster.
View listing & contact ▸A note on the order: we weight the star rating by the number of reviews, so both ZLandscape and Diggermate’s huge, well-tested review bases put them well clear of GR8LANDSCAPES’ smaller but still perfect record. None of the three is a dedicated retaining-only specialist. If your wall is part of a bigger backyard project, ZLandscape or GR8LANDSCAPES can quote the whole job. If you need the earthworks sorted on a sloping or cut-and-fill block, Diggermate is worth calling alongside whoever builds the actual wall face. As always, get two or three quotes on the same scope before you commit.
What a retaining wall actually costs in Perth (2026)
Nobody likes ringing a builder blind on price. These are honest WA ballpark ranges for the common retaining wall jobs, GST included. They’re a guide to keep you from being overcharged, not a quote, retaining wall prices move with height, material, ground conditions and access, so the spread on each line is wide for a reason. This corridor runs from flatter suburban blocks around Cannington and Canning Vale to noticeably more sloping ground further south-east toward Armadale, Kelmscott and the Darling Scarp foothills, where cut-and-fill retaining is more common on new builds.
| Job | Typical WA range | What pushes it up |
|---|---|---|
| Limestone block wall, dry-stacked, under 600mm (per m²) | $250-$400 / m² | Height, access, whether backfill/drainage is included, site clean-up |
| Limestone block wall, mortared & engineered, over 600mm (per m²) | $400-$650 / m² | Height, engineering and permit costs, reinforcement, drainage complexity |
| Besser block, reinforced & rendered (per m²) | $350-$550 / m² | Reinforcement, render finish, height, engineering for taller walls |
| Precast concrete post-and-panel (per m²) | $300-$500 / m² | Post depth/spacing, panel finish, height, crane or machine access |
| Excavation / cut-and-fill site works (per m³) | $30-$70 / m³ | Access, soil type, spoil removal, machine size |
| Engineer’s design & certification (required over 500mm) | $500-$1,500 | Wall height and length, soil report if required, site access, complexity |
| Council/building permit lodgement | $200-$600 | Council, wall height, whether a boundary or neighbour notice is needed |
| Drainage retrofit behind an existing failing wall (per m run) | $60-$150 / m | Access to dig behind the wall, ag-drain length, backfill material, disposal |
| Removal & disposal of an old failing wall (per m run) | $40-$90 / m | Wall material, height, access, tip fees |
Cannington, Wilson and Canning Vale are mostly established, flatter suburban blocks where retaining is often a replacement job on an older, failing wall. Further south-east through Gosnells, Armadale and Kelmscott, the ground starts to slope more noticeably toward the Darling Scarp, and new-build blocks more often need genuine cut-and-fill retaining as part of the original site works, which is where an excavation contractor alongside your wall builder earns its keep. Either way, drainage behind the wall decides whether it lasts, ask what’s going in behind the wall, not just what it looks like from the front.
Don’t get ripped off: red flags
- No drainage behind the wall. This is the single most common cause of retaining wall failure in Perth. A wall backfilled with plain excavated soil, with no agricultural drain and no free-draining material behind it, will trap water and eventually bulge, lean or collapse. Ask exactly what’s going in behind the wall, not just what the face is made of.
- No engineer’s certification on a wall over 500mm. In WA, retaining walls above roughly 500mm generally need council or building approval and an engineer-certified design. A builder who shrugs this off is either wrong or hoping you won’t check.
- No plan for cut-and-fill site works. On sloping blocks toward Armadale and Kelmscott, a retaining quote that doesn’t account for genuine earthworks and spoil removal will often blow out once digging starts. Get the earthworks scope confirmed separately if it’s not included.
- Ignoring the boundary and the neighbour. A retaining wall built on or near a boundary can affect your neighbour’s land, drainage and fence line. A builder who won’t discuss the true boundary can land you in a dispute.
- Cash-only, no ABN, no insurance. Retaining wall building is not a licensed trade in WA, but a genuine operator still carries an ABN and public liability insurance. No ABN, no insurance and a cash-only push is a red flag.
- The quote is well under everyone else’s. On retaining walls the lowball is almost always missing drainage, engineering or proper footings. Compare quotes on identical height, material, drainage provision and whether engineering is included.
- A big deposit up front. Materials for a retaining wall don’t justify a huge deposit before work starts. A modest deposit with the balance on completion is normal.
Before you hire: quick checklist
- ABN and public liability insurance. Confirm the builder has a current ABN and public liability cover before any work starts. Retaining wall building isn’t licensed in WA, so this is your main protection.
- Engineering for walls over 500mm. If your wall is taller than about 500mm, confirm an engineer will design and certify it, and that council approval is sorted before work starts.
- Drainage spelled out in writing. Get the backfill material, the agricultural drain and where the water actually goes written into the quote.
- Earthworks scope confirmed. On a sloping or cut-and-fill block, confirm whether excavation and spoil removal are included in the retaining quote or need a separate operator.
- Boundary and neighbour sorted. If the wall sits on or near a boundary, confirm the true boundary line and that your neighbour is aware where relevant.
- Written quote with the detail. Height, material, drainage, engineering (if required), and the price, all in writing before you pay a deposit.
- Recent, specific reviews and references. Look for recent reviews that mention an actual wall, and ask for a local job you can look at.
Frequently asked
How did you rank these retaining wall builders?
By their live Google star rating and the number of reviews behind it, pulled from Google Maps. We weight the rating by review volume so a proven score isn’t automatically leapfrogged by a perfect score from a handful of jobs.
Why is this list shorter than other suburbs?
Because we could only verify three genuinely locally-based operators with real addresses. A cluster of recurring “Perth [something]” businesses turned up in this and every other search across our whole WA rollout sharing an identical, address-free map location, which points to a generic default Google pin rather than a genuine Canning Vale or Gosnells presence, so we’ve left them out rather than guess at where they actually work.
Which areas does this cover?
Canning Vale, Gosnells and Armadale. That runs across Canning Vale, Cannington, Wilson, Beckenham, Queens Park, Ferndale, Riverton, Rossmoyne, Shelley, Thornlie, Gosnells, Maddington, Huntingdale, Southern River, Armadale, Kelmscott, Seville Grove, Camillo and Mount Nasura.
Are these paid placements?
No. This list is ordered on Google review data. Businesses can pay for a “Featured” spot at the top, which is clearly labelled, but paying never changes the review-based order below. As of this update, no spots are sold.
Do I need council approval for a retaining wall in WA?
Generally, yes, once the wall is above roughly 500mm high, and always where it involves a boundary or affects a neighbour’s land. Rules vary a little by council, so confirm with your builder or your local council before work starts.
Do I need an engineer for my retaining wall?
For anything above roughly 500mm, yes, WA generally requires an engineer-certified design before council will approve it.
Why does drainage matter so much for a retaining wall?
Because water trapped behind a retaining wall creates hydrostatic pressure the wall isn’t designed to hold back, on top of the soil itself. Without a compacted free-draining backfill and an agricultural drain to carry water away from the wall base, even a well-built wall face can bulge, lean or fail within a few wet winters.
How often is this page updated?
Monthly. Ratings and review counts move, new builders earn their spot, and we re-pull the data so the list stays honest and current.
Are you a retaining wall builder in Canning Vale, Gosnells or Armadale?
Get in front of homeowners planning a retaining wall, from a small garden edge to a full cut-and-fill rebuild. Claim your free listing, or ask about a Featured spot on this page.
Get featured ▸ Claim your free listingRankings based on Google review data collected 30 July 2026. Ratings change, we re-check monthly. Blue Collar Business · Western Australia’s Trades & Home Services Directory.