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Concrete Post & Panel Retaining Walls for Perth

Galvanised steel posts with slotted concrete panels - what Perth calls post and panel, the same system some suppliers market as precast or twin-side.

Concrete Post & Panel Retaining Walls example in Perth

Retaining Walls Perth Homeowners Choose: Concrete Post & Panel Retaining Walls

Post and panel is Perth's name for the galvanised-post-and-concrete-panel system some suppliers market as precast or twin-side panel - it's the same family of wall under three different names, and most of the confusion in this category comes from that naming, not the engineering. This page explains what the system actually is, when it beats limestone (taller walls, walls carrying a driveway or structure above), and what to expect on cost.

What's included

Galvanised post installation

Concrete panel supply and fit

Capping and finishing

Our process

01

Load assessment

We work out whether your wall needs to carry a surcharge - a driveway, shed, pool or another structure sitting above it - which is where post and panel earns its higher price over limestone.

02

Post spacing and depth

Galvanised steel H-posts are set at engineered spacing and depth, sized to the retained height and any surcharge load.

03

Panel fit

Reinforced concrete panels are slotted between the posts course by course.

04

Capping and finish

A capping course finishes the wall; the exposed concrete can be left as-is or finished depending on the look you want.

One system, three names

If you've seen "post and panel", "precast retaining wall" and "twin-side panel" in different quotes and assumed they were different products, they're not - it's galvanised steel posts with slotted, reinforced concrete panels between them, and Perth suppliers simply brand it differently.

The naming doesn't change the engineering. What changes the price and the design is height and load: a wall retaining more than 0.5 m of ground, or carrying anything above it, needs to be engineered to AS 4678 regardless of which name is on the invoice.

When this beats limestone

Post and panel earns its higher cost over limestone specifically when the wall is doing structural work beyond simple retention - holding back a driveway, supporting a shed pad, or sitting close enough to another structure to matter. For a low garden edge with no load above it, limestone or timber is usually the more cost-effective choice; for a load-bearing situation, post and panel's engineered post-and-panel system is the more predictable option.

Why work with our network for concrete post & panel retaining walls

Clears up the naming confusion

Post and panel, precast, and twin-side panel are the same system - we explain that plainly instead of letting three product names imply three different products.

Built for surcharge, not just height

The real reason to choose this system over limestone is usually load - a driveway or structure above the wall - and we explain that decision point clearly.

No branded-product upsell

We describe the system generically rather than pushing a specific supplier's branded product.

Concrete Post & Panel Retaining Walls - frequently asked questions

What is the cheapest type of retaining wall?
For low walls, treated pine timber sleepers are usually the most budget-friendly starting point. For taller or engineered walls, limestone block is typically more cost-effective than concrete post and panel per square metre of wall face.
How much does a retaining wall cost in Perth?
Most Perth retaining walls land between roughly $250 and $700 per square metre of wall face, installed, depending on material. Limestone is usually the most cost-effective option; concrete post and panel and engineered walls sit higher. Figures are indicative only and exclude GST, excavation, drainage, backfill and engineering.
What is the best material for a retaining wall in Perth?
There is no single best material - it depends on your site. Limestone is Perth's most common choice because it is locally available and suits the coastal sand-belt geology. Concrete post and panel suits taller or engineered walls. Timber sleepers suit garden terracing on a budget.
How much does a concrete sleeper retaining wall cost?
Concrete post and panel (also sold as precast or twin-side panel) retaining walls in Perth generally run around $450-$700 per square metre of wall face, installed.
Are limestone retaining walls better than concrete?
Neither is universally better. Limestone blends with Perth's coastal streetscape and is often more cost-effective for low-to-mid height garden and boundary walls. Concrete post and panel generally handles greater retained height and surcharge loads more predictably.

Concrete Post & Panel Retaining Walls across Perth

Pick your suburb for the local notes, or submit the form for a free review.

Concrete Post & Panel Retaining Walls in Cottesloe A beachfront western-suburbs pocket on deep coastal sand, minutes from Cottesloe Beach Concrete Post & Panel Retaining Walls in City Beach Large beachside blocks on the coastal sand strip west of Floreat, backing onto City Beach Concrete Post & Panel Retaining Walls in Scarborough A high-density coastal strip rebuilt around the Scarborough Beach esplanade, on shallow dune sand Concrete Post & Panel Retaining Walls in Trigg A low-rise coastal suburb between Scarborough and North Beach, built on the same dune sand system as Cottesloe Concrete Post & Panel Retaining Walls in Hillarys A marina-anchored coastal suburb around Hillarys Boat Harbour, on the northern coastal sand belt Concrete Post & Panel Retaining Walls in Rockingham A southern coastal city on Cockburn Sound, with older blocks on foreshore sand and newer estates further… Concrete Post & Panel Retaining Walls in Duncraig An established northern-suburbs pocket inland of Hillarys, on the coastal sand plain either side of Mitchell… Concrete Post & Panel Retaining Walls in Ballajura A planned 1980s suburb on the Bassendean sand belt, bordering Koondoola and Whiteman Park bushland Concrete Post & Panel Retaining Walls in Girrawheen An inner-northern suburb on the Bassendean sand belt, in the City of Wanneroo alongside Koondoola and… Concrete Post & Panel Retaining Walls in Joondalup Perth's northern regional centre, built around Lake Joondalup on the sandy northern coastal plain Concrete Post & Panel Retaining Walls in Success A southern-corridor suburb in the City of Cockburn, on the sandy coastal plain south of Fremantle Concrete Post & Panel Retaining Walls in Canning Vale A large southern-suburbs residential area spanning the City of Canning and City of Gosnells, on the sand-belt… Concrete Post & Panel Retaining Walls in Kalamunda A Darling Scarp hills town with steep, tree-lined blocks well above the metropolitan coastal plain Concrete Post & Panel Retaining Walls in Mundaring A Perth Hills town on the Darling Scarp with roads that climb the escarpment and blocks that fall away… Concrete Post & Panel Retaining Walls in Roleystone A Darling Scarp foothills suburb of sloping bush blocks in the City of Armadale, well above the coastal plain

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