Seawall Cost by Length Guide
Wall lengths priced apart: 25-foot, 50-foot, 100-foot, and 150-foot totals each stand in their own frame, Frame A as finished-wall totals and Frame B as material and repair counting.
Orange County, CA · Updated 2026 · Costs shown as ranges — your quote will vary by installer and scope
The lengths, priced apart by frame
| Wall length, as listed | Frame A reading | Frame B reading |
|---|---|---|
| 25 feet | $3,800-$15,000, finished wall | counted off the material lines, concrete at $300-$600 per linear foot |
| 50 feet | $7,500-$30,000, finished wall | counted off the material lines, concrete at $300-$600 per linear foot |
| 100 feet | $15,000-$60,000, finished wall | counted off the material lines, concrete at $300-$600 per linear foot |
| 150 feet | $22,500-$90,000, finished wall | counted off the material lines, concrete at $300-$600 per linear foot |
Each reading is one frame's own counting, and the job on every row stays seawall and bulkhead construction and repair. Frame B prints no finished-wall total at any length; its counting runs off the material lines and the repair line.
Per-linear-foot lines crossed with length, as listed by frame
| Per-linear-foot line, as listed | Frame A reading | Frame B reading |
|---|---|---|
| Finished wall, all lengths | $150-$600 per linear foot | counted as a material reading in this frame |
| Average residential project | $15,000-$60,000 per project | no such band printed in this frame |
| Concrete replacement | counted inside each length total in this frame | $300-$600 per linear foot |
| Repair | no per-foot repair total printed in this frame | $100-$250 per linear foot |
The per-linear-foot lines cross the length rows as readings inside each frame. No Frame B line is added into a Frame A length total on this page.
Frame lines behind the lengths, as reported
| Frame line, as published | Frame | 2026 band |
|---|---|---|
| 25-foot wall, finished | Frame A | $3,800-$15,000 |
| 50-foot wall, finished | Frame A | $7,500-$30,000 |
| Finished wall, per linear foot | Frame A | $150-$600 |
| Concrete replacement, per linear foot | Frame B | $300-$600 |
| Repair, per linear foot | Frame B | $100-$250 |
The by-length rows price out of the frame lines above: each Frame A total is a finished-wall reading for its length alone. The Frame B lines stand as their own counting.
Lengths priced apart, neighbours named apart
A length line answers the length question only inside its own frame, with the frame named beside it. Named apart, never a row here: retaining walls for landscaped grades, boat docks and piers, and pool walls and coping — and the job priced here stays seawall and bulkhead construction and repair on every row.
Reading a by-length quote, by frame
- Wall length named beside every figure
- Each figure read on its own length row only
Frequently asked questions
What does each wall length cost, as reported?
Frame A prints a total per length: 25 feet at $3,800 to $15,000, 50 feet at $7,500 to $30,000, 100 feet at $15,000 to $60,000, and 150 feet at $22,500 to $90,000. Frame B counts every length off material lines, concrete at $300 to $600 per linear foot.
What does a 50-foot seawall print at in the by-length guide, as reported?
Two readings, one per frame. Frame A prints a finished 50-foot wall at $7,500 to $30,000, counted by length. Frame B counts a replacement by material, concrete at $300 to $600 per linear foot, and repair by the foot at $100 to $250. The two are never blended.
What do the per-linear-foot lines print at, as listed?
In Frame A, the finished wall prints at $150 to $600 per linear foot, with an average residential project at $15,000 to $60,000. In Frame B, concrete replacement prints at $300 to $600 per linear foot and repair at $100 to $250 per linear foot.
Is the 150-foot wall priced as a printed total in this guide?
Yes. Frame A prints a 150-foot wall at $22,500 to $90,000 as a finished-wall total, beside the 25-foot, 50-foot, and 100-foot totals. Frame B prints no length total in that frame.
Are retaining walls, boat docks and piers, or pool walls priced in this guide?
No, head-on: this guide prices seawall lengths alone, by wall length as listed. Retaining walls for landscaped grades, boat docks and piers, and pool walls and coping are named apart, and seawall and bulkhead construction and repair is the only job priced here.