# Cost guides

> What retaining wall costs: independent, numbers-first guidance from Retaining Wall Lab.

Canonical: https://retainingwalllab.com/cost/

Last updated: 2026-11-08

## What retaining wall costs

Prices in this category are quoted per unit — per square foot, per linear foot, per pier, per job — and the unit is where most quotes become incomparable. The table below is the range we verified in November 2026, with what each line includes.

 |  | Job | Typical range | Notes

 | Block wall | $15–$35 / sq ft | Segmental, engineered

 | Poured concrete | $25–$60 / sq ft | Structural

 | Timber wall | $10–$25 / sq ft | Shortest life

 | Gabion | $20–$40 / sq ft | Drainage-friendly

 | Boulder wall | $20–$45 / sq ft | Site-dependent

 | Drainage and backfill | $5–$15 / sq ft | Most failures start here

## What moves the price

- **Access.** Height, water, tight side yards and finished interiors all add labour.

- **Prep.** Cleaning, grinding, draining or removing an old system is often the largest hidden line.

- **Materials.** The same job in a premium finish can double the material cost.

- **Permits and disposal.** $100–$800 depending on the jurisdiction and the waste stream.

- **Season.** Spring and autumn are busy; February is not.

## What a quote should show

Ask for the same five lines from every contractor: unit price and quantity, prep included, materials by brand, permits and disposal, and the warranty. A quote that only shows a total is a price, not a scope.

The [methods hub](/methods/) explains what each option actually does, and the [problems hub](/problems/) starts with the diagnosis every quote should follow.

### Is the cheapest quote a red flag?

Usually it is a scope difference — less prep, no permit, thinner material. Compare the five lines, not the total.

### How long is a quote valid?

30 days is common; material prices move. Ask what happens if you sign after the window.

## Guides in Cost

- [Understanding Block Retaining Wall Cost](https://retainingwalllab.com/block-retaining-wall-cost/)
- [Boulder Cost per Square Foot and per Ton](https://retainingwalllab.com/boulder-cost/)
- [Bulging: what a fix costs](https://retainingwalllab.com/bulging-cost/)
- [Concrete retaining wall cost: poured vs block](https://retainingwalllab.com/concrete-retaining-wall-cost/)
- [Gabion Cost for a Retaining Wall](https://retainingwalllab.com/gabion-cost/)
- [Gabion wall cost](https://retainingwalllab.com/gabion-wall-cost/)
- [Is retaining wall worth it? Value and cost test](https://retainingwalllab.com/is-retaining-wall-worth-it/)
- [Leaning wall: what a fix costs](https://retainingwalllab.com/leaning-wall-cost/)
- [Poured concrete cost](https://retainingwalllab.com/poured-concrete-cost/)
- [Retaining Wall Blocks Cost: Unit Price and Coverage](https://retainingwalllab.com/retaining-wall-blocks-cost/)
- [Retaining wall cost: what a project really runs](https://retainingwalllab.com/retaining-wall-cost/)
- [Understanding Retaining Wall Cost Per Square Foot](https://retainingwalllab.com/retaining-wall-cost-per-square-foot/)
- [Retaining wall installation cost: labor and scope](https://retainingwalllab.com/retaining-wall-installation-cost/)
- [Retaining Wall Replacement Cost: What a Rebuild Runs](https://retainingwalllab.com/retaining-wall-replacement-cost/)
- [Root Damage: What a Fix Costs](https://retainingwalllab.com/root-damage-cost/)
- [Segmental Block Cost: What an Engineered Wall Runs](https://retainingwalllab.com/segmental-block-cost/)
- [Settlement: What a Fix Costs](https://retainingwalllab.com/settlement-cost/)
- [Stone Retaining Wall Cost: Dry, Mortared, and Cut](https://retainingwalllab.com/stone-retaining-wall-cost/)
- [Understanding Timber Cost For Retaining Walls](https://retainingwalllab.com/timber-cost/)
- [Weeping Face: What a Fix Costs](https://retainingwalllab.com/weeping-face-cost/)
- [Wood Retaining Wall Cost: Timber, Ties, and Cedar](https://retainingwalllab.com/wood-retaining-wall-cost/)
- [How Much Does Retaining Wall Cost in 2026?](https://retainingwalllab.com/how-much-does-retaining-wall-cost/)