EXTERIOR
Retaining Wall Cost: Per Square Foot in 2026
Estimate retaining wall cost per square foot — with the free concrete calculator.
A retaining wall solves drainage and slope problems — but it's a structural project, and cutting corners costs double. Here's the real 2026 cost by material.
THE SHORT ANSWER
The short answer
Retaining walls run $20–$50 per sq ft installed in 2026. Segmental concrete block: $20–$35. Poured concrete: $25–$40. Timber: $15–$25. Most residential projects run $3,500–$10,000.
What it costs
Segmental block (the residential standard) runs $20–$35 per sq ft installed. Poured concrete runs $25–$40. Natural stone and boulders run $25–$90. DIY materials run $8–$18 per sq ft before labor.
- Segmental block: $20–$35 per sq ft
- Poured concrete: $25–$40 per sq ft
- Timber: $15–$25 per sq ft
- Natural stone: $25–$90 per sq ft
What changes the price
Height is the biggest driver — anything over 4 ft needs engineered reinforcement. Drainage (gravel, pipe, drainage cloth) is non-negotiable and adds 10-20%. Sloped or hard-to-access sites add labor.
Try the concrete calculator
Enter the wall area and material per sq ft to estimate the project.