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Wonder Walls

Carlisle, WA 6101


Wonder Walls is the oldest established manufacturer and installer of precast reinforced concrete panel and post retaining walls in Western Australia.

Our Supervisors and Estimators have had extensive experience as subcontractor installers prior to joining Wonder Walls, and our factory and administration teams bring a wealth of experience to the business.

Established in 1983, we produce one of Australia’s lightest, thinnest and strongest retaining wall systems, making it suitable for a wide range of applications, including:

Tiered retaining walls

Garden Edges

Retaining where space is limited

Terracing steep slopes

Replacing termite-infested sleepers

Our factory and sales centre is located in the Perth suburb of Carlisle. Our installation service covers the entire Perth metropolitan area from Quinns Rock in the north to Dawesville in the south. However, DIY products can be transported anywhere in WA, from Esperance to Kununurra to Christmas Island.

The Builder’s Choice

At Wonder Walls we are proud of our reputation as a leading manufacturer and installer of quality retaining wall systems. Our highly skilled and experienced team is recognised throughout the building industry for consistently delivering exceptional service.

We are constantly striving for service excellence and achievement and believe in getting the job done right – first time, every time

Wonder Walls has a number of permanent teams of sub-contractor installers; these teams are led by individuals who have been installing retaining walls for many years.

Our team leaders have an outstanding reputation for their knowledge, ability and efficiency and ensure every installation is carried out with care and to the very highest industry standards.

For more information about Wonder Walls, or to arrange a FREE no obligation measure and quote anywhere in the greater Perth metropolitan area, contact us on (08) 9472 1148.


Panel & Post Retaining

Suppliers of the Wonder Wall panel and post retaining wall system

Structurally sound panel and post retaining walls available from Wonder Walls, the retaining wall specialists in Perth.

What are Wonder Walls?

The Wonder Walls system comprises factory precast steel reinforced concrete posts and panels. These components are assembled on site using a cantilevered configuration and are able to retain up to 1.5 meters.

How are they erected?

Building a retaining wall is relatively straightforward, with a few ground rules surrounding the posts and panels.

Retaining wall posts are normally 130mm square and spaced at 1150mm centres. In most cases the posts are twice as long as the wall is high – e.g. a 600mm high wall would use a 1200mm long post. Half the post is placed in a hole excavated in the soil and then backfilled with an appropriate strength material – i.e. 1 part cement to 4 parts damp sand, or similar.

In the case of walls higher than 1200mm additional reinforced concrete backing panels are used to distribute the load at the base of the panel.

Standard panels 300mm deep, with half panels 150mm in depth, are used in conjunction with each other to allow a retaining wall height from 300mm to 1500mm in increments of 150mm

Wonder Walls can also be constructed alongside a driveway, and specifications for a light vehicle surcharge wall are also available. Detailed engineering specifications for the erection of a wall in sand or clay are available.

The Wonder Wall Advantage

There are many advantages to choosing Wonder Walls over other retaining systems:

Minimal use of space

Wonder Walls can be retained right to the edge of the block, which means a fence can be erected immediately behind the wall. They make for excellent garden and landscaping retaining walls.

The cost for the supply and erection of a wall is generally cheaper than most other retaining wall systems.

Wonder Walls offers the perfect retaining wall solution. Their concrete composition and galvanised steel reinforced panels make them extremely strong. The steel is completely encased in the panel and there are no exposed ends; they can’t rot or corrode, and they provide a quality finish that is maintenance-free and lasts a lifetime.

Easy to Install

Wonder Walls is designed for the Do-It-Yourself enthusiast. This DIY retaining wall system does not require skilled labour, and is quick and easy to install. The panels are relatively light and can be handled easily by one person.

The concrete used in Wonder Walls panels and posts is regularly tested by an independent testing laboratory to ensure consistency of the design strength.

View our latest Catalogue for more information.

For an obligation-free site inspection, measure, and quotation anywhere in the greater Perth metropolitan area, contact us on (08) 9472 1148.


  • Landscaping Supplies
  • Retaining Walls

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Services (2)


  • 180 Raleigh Street, Carlisle WA 6101, Australia

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