WalletClearly

๐Ÿงฑ Retaining Wall Cost Calculator

Estimate the cost to build a retaining wall. Covers interlocking block, timber, and boulder styles with drainage and backfill.

Project Details

Total length of the retaining wall

Height of the finished wall above grade (max 4 ft for DIY)

1 = interlocking concrete block, 2 = landscape timber, 3 = natural boulder

Your Estimate

Enter your details and hit Calculate to see results.

Pro Tips

  • Bury the first course 6 inches below grade โ€” the foundation row is invisible but critical
  • Install drainage pipe and gravel behind every retaining wall or hydrostatic pressure will push it over
  • Step back each course 1 inch per foot of height (batter) for long-term stability
  • Walls over 4 ft require a permit and engineering in most jurisdictions โ€” check before you dig