# Gabion wall cost

> Gabion wall cost: practical numbers, costs, and trade-offs, written independently.

Canonical: https://retainingwalllab.com/gabion-wall-cost/

Last updated: 2026-11-09

A gabion wall costs $20 to $40 per square foot installed, so a 40 ft wall at 4 ft high — 160 sq ft — runs $3,200 to $6,400. The rate covers baskets, stone, geotextile, base preparation, and labor, but it assumes a truck can reach the wall line. Access and stone price are what push a quote outside that band.

## What the installed rate includes

**A gabion wall** is a retaining structure built from wire mesh baskets filled with stone, tied together and stepped back as it rises. The installed rate is the price of a finished wall face, not the price of the baskets alone.

Inside the rate: the galvanized or PVC-coated baskets, the stone fill, the geotextile against the soil, the compacted gravel base, the lacing and tying, and the labor to fill and place the baskets. Outside the rate: excavation, spoil haul-off, permit fees, engineering, and any drainage pipe the site needs.

## Cost per square foot, per basket, and per ton

The published figures for the wall systems are block at $15 to $35 per sq ft, timber at $10 to $25, gabion at $20 to $40, boulder at $20 to $45, poured concrete at $25 to $60, and drainage and backfill at $5 to $15.

Gabion is usually quoted per square foot of face, but the material is bought per basket and the stone per ton. A common basket is 3 ft × 3 ft × 3 ft, which holds 27 cubic feet of stone, or 27 ÷ 27 = 1 cubic yard. At roughly 1.5 tons per cubic yard, one basket holds about 1.5 tons of stone.

That gives a second way to check a quote. If a supplier wants $90 per ton delivered, one basket of stone is 1.5 × $90 = $135, and a 40 ft wall at 4 ft high needs 160 ÷ 9 = about 17.8 baskets, so 17.8 × $135 = about $2,400 in stone alone.

## Three worked examples

| Wall | Face area | Installed range |
|---|---|---|
| 20 ft × 3 ft | 60 sq ft | 60 × $20 = $1,200 to 60 × $40 = $2,400 |
| 40 ft × 4 ft | 160 sq ft | 160 × $20 = $3,200 to 160 × $40 = $6,400 |
| 60 ft × 4 ft | 240 sq ft | 240 × $20 = $4,800 to 240 × $40 = $9,600 |

The rate does not fall much with size, because the labor is per basket and the stone is per ton. A long wall is cheaper per square foot only when the site is open enough for a machine to feed the baskets.

## Stone tonnage arithmetic

Stone is the line that moves most, so it is worth calculating before you call anyone.

For a wall 3 ft high and 3 ft deep, the stone volume is 3 × 3 = 9 cubic feet per linear foot. For 40 ft: 40 × 9 = 360 cubic feet. Divide by 27 for cubic yards: 360 ÷ 27 = 13.3 cubic yards. Multiply by 1.5 tons per cubic yard: 13.3 × 1.5 = about 20 tons.

At $60 per ton delivered, 20 × $60 = $1,200. At $100 per ton, 20 × $100 = $2,000. That $800 spread is most of the difference between a $3,200 wall and a $6,400 one.

## What the basket price does not include

Excavation is the first omission. A gabion wall needs a level, compacted base and a stepped cut behind it. On a slope, that means cutting into the hill, and rock or old footings add time.

Spoil haul-off is the second. The soil removed from the excavation has to go somewhere, and a single truckload of removal is a real line on a small job.

The permit is the third. Most jurisdictions require a permit at 3 or 4 ft of exposed height, and most require sealed engineering above 4 ft. A gabion wall is not exempt because it is flexible; the review still covers bearing, sliding, overturning, and drainage. Budget the permit and the engineering separately from the wall.

## Access is the hidden multiplier

A gabion wall is heavy in both directions. Stone arrives by truck, and spoil leaves the same way. On a rear lot with a 3 ft gate, every basket and every bucket of stone moves by hand, and the labor line can double.

Ask each contractor how they will get material to the wall line, and whether the answer changes the price. A quote written without a site visit usually assumes access the site does not have.

## How to budget a gabion wall

1. Measure the face as length × height, then add 10 percent for stepping and curves.
2. Multiply the adjusted area by $20 to $40 to get the installed range.
3. Calculate stone volume as height × depth × length, divide by 27 for cubic yards, then multiply by 1.5 for tons.
4. Call two stone suppliers for a delivered price per ton, because that number decides where in the range the job lands.
5. Add drainage and backfill at $5 to $15 per square foot, then subtract the part already inside the installed rate.
6. Add excavation, haul-off, permit, and engineering as separate lines, and ask whether each is included in the quote.

## When gabion is the wrong buy

Gabion is a poor buy on a dry, accessible site where block is cheaper and gives a face you can walk past without thinking about stone. It is also a poor buy where the wall must be tall and the budget has no room for engineering and a proper base, because a tall gabion wall is an engineered structure like any other.

It is a good buy on a wet slope, a site with cheap local stone, or a wall that needs to flex rather than crack. On the same 160 sq ft wall, block at $15 to $35 per square foot is 160 × $15 = $2,400 to 160 × $35 = $5,600, against gabion at 160 × $20 = $3,200 to 160 × $40 = $6,400, so the gap is $800 at both ends. The comparison is in [gabion vs segmental block](https://retainingwalllab.com/gabion-vs-segmental-block/). For the wider per-square-foot picture, see [retaining wall cost per square foot](https://retainingwalllab.com/retaining-wall-cost-per-square-foot/). For what goes wrong after installation, see [gabion problems](https://retainingwalllab.com/gabion-problems/).