Free retaining wall calculator
Retaining Wall Cost Calculator
Estimate a block, stone, timber or poured concrete retaining wall by length, height and site.
- About 60 seconds
- Priced for your ZIP
- No site visit needed
Retaining WallsStep 1 of 8
About how long is the wall?
How much does a retaining wall cost?
Most retaining wall projects in the US fall between $3,000 – $25,000. Where yours lands depends on a handful of things — that's exactly what the calculator above asks about, then it adjusts for labor and material costs in your ZIP code.
What drives the price
- Wall face area (length × height) drives most of the cost.
- Walls over 4 ft usually need an engineered design, geogrid and a permit.
- Natural stone and poured concrete cost more than interlocking block.
- Proper drainage behind the wall is what keeps it standing — don't skip it.
- Tight access means more hand labor and a higher price.
Frequently asked questions
How much does a retaining wall cost per square foot?
Most walls run $30–$55 per square foot of wall face for interlocking block, and $40–$80 for natural stone, installed.
Do I need a permit for a retaining wall?
Many cities require a permit for walls over 3–4 feet, or any wall holding back a driveway or building. Taller walls also need an engineer's design.
How long does a retaining wall last?
Block and stone walls built with proper drainage last 50+ years. Timber walls usually last 15–25.