How much retaining wall for a 30 ft long × 3 ft high?
A 30 ft long × 3 ft high retaining wall project is pre-filled below. Adjust any value to match your exact job.
Your project
Standard size shown by default. Change any value — the answer recomputes instantly.
You need
189blocks
Exact need: 180 blocks · plus 5% waste allowance
Material cost
$472.5–$1,512
Installed (US avg)
$2,385–$4,100
Shopping list
| ITEM | QTY | PRICE RANGE |
|---|---|---|
| blocks | 189 | $472.5–$1,512 |
| Estimated material total | $472.5–$1,512 |
Companion materials
- Gravel base (6 in): ≈ 0.8 tons