Understand what retaining walls in Perth involve
A retaining wall holds back soil where a block falls away, steps between levels or meets a neighbour at a different height. In Perth most are built from limestone or masonry block, set on a compacted base with drainage behind, so loose sand stays put and the ground above becomes flat, usable yard.
Signs a slope needs retaining before lawn and paving go in
Sand slumping onto paths after rain, turf that will not hold on a grade, fence posts leaning out and pavers sinking along an edge all point to a level change that needs support. New homes often leave a bare builder's cut that keeps washing down until a wall is built.
Limestone or block: the material decision
Limestone suits Perth's sandy ground and coastal look, and comes as natural cut blocks or uniform reconstituted blocks. Masonry block systems suit a rendered finish or a taller wall designed to carry more load. The right choice depends on height, what sits above the wall and the style of your home.
Why approvals and engineering come first
Whether a wall needs council approval depends on its height, where it sits on the block and what it holds back. Walls supporting a driveway, pool, building or deep fill may also need an engineer's design. Checking with your local council before any digging avoids rebuilding a wall later.
Boundary walls and the conversation with your neighbour
When the level change sits on a shared boundary, talk to your neighbour early. Agree where the wall goes, how costs are split, where water will drain and what fence will sit on top. Writing the agreement down keeps both households clear once construction starts.
Next step for your retaining wall and landscaping quote
Measure the approximate wall length, check its height at the tallest point and see whether it runs along a boundary. Think about what will sit above it, such as lawn, paving or a fence. Then request a free quote here and a licensed and insured local contractor can follow up.
What to check on site this week
Walk the slope with a tape measure and mark where the ground starts to fall. Look for downpipes, sprinklers or services near the wall line, and take a photo from each end so the fall is easy to see when you compare limestone and block options.
Retaining Walls Services We Offer
✓Limestone Block Retaining Walls
Natural cut or reconstituted limestone blocks for garden levels and sandy slopes, with a pale finish that suits many Perth homes.
✓Masonry Block Retaining Walls
Block systems that can be rendered or engineered for taller walls or walls carrying extra load above.
✓Boundary Retaining Walls
Walls that cross a shared boundary need written agreement from the neighbour, and a fence often sits on top.
✓Terrace and Garden Bed Walls
Low walls that step a slope into flat beds or lawn areas for planting and outdoor use.
How it works
- 1
Measure the level change
Work out the length of the wall and its height at the tallest point, and note what will sit above it.
- 2
Check approvals and engineering
Ask your local council whether the wall needs approval, and find out whether its height or load calls for an engineer's design.
- 3
Agree any boundary details
If the wall is on a shared boundary, settle position, costs, drainage and the fence on top with your neighbour in writing.
- 4
Build, drain and backfill
The wall is set on a compacted base, drainage goes in behind it and the ground is backfilled and levelled for lawn or paving.