Most installed retaining walls run $35 to $75 per square foot of wall face in 2026, but the range is wide because material does the heavy lifting on price. Budget timber and block start near $10–$15/sq ft; poured concrete and engineered stone climb to $55–$75+. Height, drainage, and site access push the final number.
| Wall type | Installed, per sq ft of face |
|---|---|
| Timber | $10–$15 |
| Segmental block (SRW) | $15–$35 |
| Poured concrete | $20–$55 |
| Natural stone | $40–$75+ |
Drainage. A wall without proper drainage fails. Gravel backfill, drain pipe, and filter fabric are a real line item, not an afterthought.
Rebar and reinforcement. Rebar alone runs about $1.50–$2.50 per square foot on taller walls.
Height and engineering. Walls over ~4 ft often need engineering and permits, which add cost fast.
Excavation and access. Digging the footing and moving material by hand on a tight lot adds crew hours.
A 50 ft long, 4 ft high segmental block wall is 200 sq ft of face. At $30/sq ft installed that’s $6,000 before drainage and excavation — add gravel backfill, drain pipe, and a footing dig and you’re realistically $8,000–$10,000.
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Pricing figures reflect 2026 US market data (LawnStarter, Lawn Love, and industry cost guides). Actual costs vary by region, wall height, and site conditions — this page is a guide, not a quote.