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Post & Panel (Twin-Side) Retaining Walls in Perth

Post & Panel (Twin-Side) Retaining Walls for Perth Properties

Galvanised or concrete posts with precast concrete panels slotted between them - a fast, consistent-finish system widely used across Perth for boundary and driveway retaining.

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Retaining Wall Perth: Post & Panel (Twin-Side) Retaining Walls

Post and panel - sold in Perth under names like twin-side - is a precast concrete system: galvanised or concrete posts go into the ground at set centres, and precast panels slot horizontally between them. It's a common choice for boundary and driveway retaining because the install is faster than block-by-block masonry and the finish is consistent from one end of the wall to the other. First contact usually covers the run length, the height needed, and whether the wall sits on a boundary (which can change the approval position).

What's included

Post installation

Posts set to the engineered spacing and embedment depth for the wall height and expected load.

Precast panel supply and install

Panels slotted between posts, stacked to the required wall height.

Capping and finishing

A capped top edge and, where wanted, a rendered or coloured panel finish.

Boundary and driveway retaining

The system's straight-run strength suits long boundary lines and driveway cut retaining specifically.

Post and panel pricing scales mainly with wall length and height. Panel finish (plain vs rendered) and post material are the other cost variables - ask for both quoted separately.

How the process works

  1. 1

    Measure the run

    Length, height and any grade change along the wall line.

  2. 2

    Boundary check

    Confirm boundary position - a wall on or near a boundary can carry a different approval position than one set back.

  3. 3

    Post and panel order

    Posts and panels supplied to the confirmed run and height.

  4. 4

    Install and finish

    Posts set, panels dropped in, capped and finished.

Why get post & panel (twin-side) retaining walls help through us

Consistent finish over a long run

Precast panels give the same face from end to end - useful where a wall runs the full length of a driveway or boundary.

Faster install than masonry

Post and panel typically goes up faster than block-by-block construction, which matters when a driveway or access is out of use during the build.

Engineered post spacing

Post spacing and embedment are set to the wall height and load, not a fixed guess.

Post & Panel (Twin-Side) Retaining Walls - Frequently Asked Questions

What is the difference between a limestone wall and a post and panel wall?
Limestone block walls are dry-stacked or mortared natural or reconstituted limestone blocks, a Perth-common look that suits the local geology. Post and panel (twin-side) walls use precast concrete panels slotted between posts - generally a faster install with a very consistent finish.
What is a post and panel (twin-side) retaining wall?
Post and panel, also sold as twin-side, is a precast concrete system where galvanised or concrete posts are set into the ground and precast panels slot between them - a common Perth alternative to limestone block, popular for its speed of install and consistent finish.
Why do retaining walls fail in Perth's sandy soils?
Perth's winter-dominant rainfall means backfill that drains fine all summer can saturate and build up hydrostatic pressure behind a wall in winter - a common failure driver on the sandy Swan Coastal Plain. Ag-drain, gravel backfill and geofabric behind the wall are structural requirements, not optional extras.

Post & Panel (Twin-Side) Retaining Walls across Perth

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

Post & Panel (Twin-Side) Retaining Walls in Kalamunda Steep, tree-lined blocks on the Darling Scarp that usually need terracing to win a level building pad. Post & Panel (Twin-Side) Retaining Walls in Mundaring Escarpment blocks that fall away from the road, where walls carry the building pad and the driveway. Post & Panel (Twin-Side) Retaining Walls in Roleystone Semi-rural hills blocks in the Canning River valley, where engineered timber and rock walls are common. Post & Panel (Twin-Side) Retaining Walls in Bedfordale Large scarp-face lots where retaining is about driveway cuts and shed or dam pad levels. Post & Panel (Twin-Side) Retaining Walls in Darlington Granite-outcropped hills blocks where rock and boulder walls match the existing landscape. Post & Panel (Twin-Side) Retaining Walls in Gooseberry Hill Blocks cut into the scarp with walls sitting close to boundaries, so approvals matter early. Post & Panel (Twin-Side) Retaining Walls in Lesmurdie Genuinely steep ground near the falls, where terraced limestone and concrete sleeper walls suit. Post & Panel (Twin-Side) Retaining Walls in Maida Vale At the base of the scarp, where the rear of a block often steps up toward the escarpment. Post & Panel (Twin-Side) Retaining Walls in Forrestfield Foothills cut-and-fill blocks where walls usually hold a rear-of-block grade change. Post & Panel (Twin-Side) Retaining Walls in South Perth Riverside blocks near the Swan escarpment, where older limestone retaining is common. Post & Panel (Twin-Side) Retaining Walls in Como Streets stepping down to the Canning and Swan, where post-war limestone walls are nearing end of life. Post & Panel (Twin-Side) Retaining Walls in Applecross Elevated river-view sites where a pool or extension adds surcharge close to the retained edge. Post & Panel (Twin-Side) Retaining Walls in Mount Claremont A leafy western-suburbs pocket where low limestone or timber retaining is landscaping scale. Post & Panel (Twin-Side) Retaining Walls in City Beach Coastal dune ground where footing and drainage design matter more than wall height. Post & Panel (Twin-Side) Retaining Walls in Scarborough Beachside blocks on shifting coastal sand, where containing sand and drainage lead the design.

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