Retaining WallsBrisbane

Gabion Retaining Wall Cost

Gabion walls combine modern industrial style with excellent drainage performance. Indicative costs range from $200 to $450 per square metre in Brisbane, with natural drainage benefits that can save on overall project costs.

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Gabion Wall Pricing — 2026

Small Gabion

Under 1m, local rock fill

$200 – $300

per m² indicative

Medium Gabion

1 – 1.5m, standard rock

$300 – $400

per m² indicative

Large / Premium

1.5m+, decorative stone

$350 – $450+

per m² indicative

* Indicative costs for Brisbane. Rock fill type significantly affects pricing. Always obtain written quotes.

Gabion Cost Breakdown

Gabion wall costs consist of three main components: the wire basket cages, the rock fill material, and installation labour. The baskets themselves are relatively affordable — it is the rock fill and labour that drive most of the cost variation.

Locally sourced crushed rock or recycled concrete is the most affordable fill option. Decorative river stones, granite, or imported basalt will significantly increase costs but create a more visually striking wall.

One key cost advantage of gabion walls is their inherent drainage capability. Unlike concrete sleeper or block walls, gabions do not require separate drainage systems, which can save $30–$80 per lineal metre on drainage alone.

Walls over 1 metre still require council approval and engineering certification in Queensland, regardless of wall type.

Gabion Cost Components

  • ✓Wire gabion baskets (galvanised or Galfan)
  • ✓Rock fill material (local or decorative)
  • ✓Foundation preparation
  • ✓Basket assembly and placement
  • ✓Rock filling and packing
  • ✓Geotextile fabric (behind baskets)
  • ✓Site preparation and clean-up

Compare Wall Type Costs

Concrete Sleeper ($250–$500)→Sandstone ($300–$600)→Timber ($150–$350)→Block Wall ($200–$400)→

Gabion Retaining Wall Cost FAQs

Gabion retaining walls in Brisbane indicatively cost between $200 and $450 per square metre installed. Costs vary based on gabion basket size, rock fill type, wall height, and site access. Locally sourced rock fill is cheaper than decorative imported stone.
Gabion walls can be cheaper for larger projects, particularly where drainage is a major concern. At $200–$450/m2, gabions overlap with concrete sleepers ($250–$500/m2). Gabions save on drainage costs since they are inherently free-draining, which can offset the base material cost.
Gabion walls are naturally free-draining — water passes through the rock fill without building hydrostatic pressure. This is one of their biggest advantages in Brisbane's high-rainfall climate. However, you may still need to manage water flow at the base to prevent erosion.
Gabion walls with galvanised or Galfan-coated wire baskets last 60–80+ years. The rock fill itself is essentially permanent. The lifespan depends on the wire coating quality — standard galvanised wire lasts 40–60 years while Galfan coating extends this to 80+ years.

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