FAQ - A1 Retaining

No. We do not construct timber retaining walls.

Timber retaining walls have a limited lifespan and are prone to warping, movement, and deterioration over time.
Australian Standards allow for timber to warp as it ages, which can affect appearance and long-term performance.
We focus on concrete systems that provide greater durability and long-term value.

A retaining wall requires proper excavation, footing preparation, post installation, drainage, and backfilling.
Each step is important to ensure the wall performs correctly long-term and isn’t rushed.

Photos of the site, approximate wall length and height, access details, and any plans you may have help us prepare an accurate quote.
A site inspection may still be required.

Start times depend on current workload, site readiness, weather conditions, and whether engineering is required.
We will confirm a timeframe once the quote is approved.

Approval requirements vary depending on wall height, location, and council regulations.
Some retaining walls require approval or engineering, especially if they exceed certain heights or support additional loads.

Retaining walls on boundaries or easements often require additional approvals and, in some cases, neighbour consent.
We can advise based on your site conditions.

Some retaining walls require engineering depending on height, soil conditions, and site factors.
We assess each project and arrange engineering where required.

Yes. Retaining walls can be designed to support fences or additional loads, however this may require engineering depending on the height and load involved.

Gabion retaining walls are made from steel mesh baskets filled with rock.
They provide excellent drainage, are structurally stable, and offer a natural appearance suited to many landscapes.

The best option depends on site conditions, wall height, appearance preferences, and budget.
We assess your site and recommend the most suitable solution.

Yes. Proper drainage is essential to prevent pressure build-up and failure.
Our retaining walls include appropriate drainage to suit the site.

All retaining walls are built with appropriate drainage systems, including ag pipe, geofabric, and free-draining backfill,
to prevent water pressure build-up behind the wall.

Poor drainage can cause pressure build-up behind the wall, leading to movement or failure over time.
Proper drainage is critical to retaining wall performance.

Pricing is based on wall height, length, materials, site access, excavation requirements, and whether engineering is required.
Each site is different, so quotes are prepared individually.

We may be able to give a rough estimate based on photos and measurements, but a site inspection ensures accurate pricing and avoids surprises.

In most cases, no. We handle excavation and preparation as part of the job.
We’ll advise if anything needs to be done beforehand.

Yes. We can assist with yard levelling, excavation, and preparation works to complement your retaining wall project.

Yes. Removal and disposal of existing retaining walls can be included as part of the project.

Concrete sleeper and gabion retaining walls are designed to last decades when constructed correctly and maintained appropriately.

Minimal maintenance is required. Periodic checks after heavy rainfall and ensuring drainage remains clear is usually sufficient.

Yes. A1 Retaining is fully insured.