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Your project

ft
ft
Wall type
Finish
Finished sides
Cap

How it's priced

  • Retaining wall rough structure — up to 3' tall$16,200
    40 LF × $405 / LF
  • Wall waterproofing$360
    40 LF × $9 / LF
  • French drain behind walls / RBB$2,120
    40 LF × $53 / LF
  • Smooth stucco finish$4,080
    120 SF × $34 / SF
  • Pre-cast wall cap — install$1,000
    40 LF × $25 / LF

What goes into it

  • 8x8x16 block (with waste)142 ea
  • Footing concrete2.13 cu yd
  • #4 rebar, 20' sticks20 ea
  • Mortar (80 lb)12 bags
  • Grout0.5 cu yd
  • French drain40 LF
  • Wall cap40 LF

Published cost guides, same scope

For comparison only — not our price. What's included differs:

The math

  1. 40 ft × 3 ft = 120 SF of wall face
  2. 120 SF × 1.125 blocks/SF + 5% = 142 blocks
  3. Footing 16" wide × 12" deep × 40 ft ≈ 2.13 cu yd
  4. #4 verticals every 16" + horizontals ≈ 381 LF → 20 sticks
  5. Priced at the 3 ft height step (your wall: 3 ft).
  • Retaining walls include waterproofing and a french drain behind the wall so water has somewhere to go.
  • Ballpark only — final price after a free site walk.