Seawall cost per foot
Published seawall prices per linear foot for repair by type, replacement, new walls by material, lake seawalls and the extras (removal, engineering, permits, inspection), each with its source and date.
The short answer
Published national figures put seawall repair at roughly $100–$250 per linear foot for common repairs, rising to $300–$600 per foot for leaning walls, toe failures and cracked panels. A new or replacement seawall typically runs $150–$800 per foot depending on material, height and site, with commercial or high-exposure work at $1,000–$2,000+. Removal of an old wall, engineering, permits and inspection are usually extra. These are national consumer-guide ranges, not quotes; the useful number is an itemized proposal for your wall.
How to read these numbers
Every figure here comes from a named, dated source and says what it covers. They are national ranges from consumer cost guides, not quotes. Your price depends on the cause of the damage, the length and height of the wall, how equipment reaches it, the material, and the approvals needed. We do not average figures from different sources into a single number.
Seawall repair cost by type of repair
From Angi’s national guide, updated August 2026, per linear foot:[1]
| Repair | Per linear foot |
|---|---|
| Grouting joints | $100–$125 |
| Small cracks | $100–$180 |
| Soil stabilization | $120–$270 |
| New concrete caps and tiebacks | $125–$230 |
| Leaning walls | $200–$600 |
| Secondary anchors | $225–$300 |
| Joint separation | $250–$500 |
| Toe berm failure | $300–$600 |
| Restoring cracked panels | $450–$600 |
The same guide puts typical professional repair at $100–$250 per linear foot overall. For example, that works out to $5,000–$12,500 for 50 feet and $10,000–$25,000 for 100 feet. It reports specialized marine labor at $50–$100 an hour, making up 25–40% of a repair bill.[1] HomeGuide lists non-structural repair in the same $100–$250 range.[2]
New and replacement seawall cost by material
| Material | HomeGuide, per linear foot[2] | HomeAdvisor, per linear foot[3] |
|---|---|---|
| Vinyl | $200–$550 | $200–$600 (5-ft wall; 8–10 ft can nearly double) |
| Steel | $200–$600 | $250–$700 |
| Concrete | $200–$600 | $200–$800 |
| Wood | $150–$500 | $150–$500 |
| Riprap (sloped rock) | $50–$200 | $70–$400 |
| Living shoreline | $50–$350 | — |
Overall, HomeGuide lists $150–$600 per foot for typical residential replacement, or $15,000–$60,000 for a 100-foot wall.[2] HomeAdvisor lists $100–$800 per foot for typical residential projects and $2,000+ for complex or commercial ones, and reports that saltwater seawalls average about twice the cost of freshwater bulkheads.[3] HomeGuide puts commercial or high-erosion zones at $700–$2,000+ per foot.[2]
A real-world reference point: after Hurricane Ian, one Punta Gorda, Florida marine contractor gave a ballpark of the high $40,000s to $50,000 for a typical concrete seawall replacement on a canal lot.[4]
Lake seawall cost
HomeGuide lists lake seawalls separately:[2]
| Lake seawall | Per linear foot |
|---|---|
| Standard | $150–$400 |
| Medium complexity | $400–$600 |
| Complex | $600–$1,000 |
The extras that are easy to leave off a quote
From HomeGuide:[2]
| Item | Published range |
|---|---|
| Removing an old seawall | $50–$150 per linear foot |
| Structural engineering design plans | $2,000–$3,000 |
| Permits | $100–$400 on average |
| Inspection | $200–$600 per visit, depending on whether diving is included |
HomeAdvisor gives a wider permit range of $150–$2,500 including the regulatory process.[3] Permit fees are often the smallest part. Preparing applications, drawings and surveys is where the cost and time go.
Repair or replace: the cost question
Angi suggests considering replacement when repair costs reach about 50% of the cost of building new.[1] Treat that as a prompt, not a rule. If the anchors, toe or panels are failing along most of the wall, repair money buys less time. Our repair or replace guide covers the condition factors that should drive the decision.
How to compare seawall quotes
- Check the diagnosis. Each proposal should name the cause. If two contractors disagree, settle that first; an independent inspection helps.
- Line up the scope. Compare linear feet, method, anchors, toe, cap, drainage and backfill side by side.
- Find the exclusions. Look for removal, engineering, permits, dock or lift removal, landscaping and disposal.
- Check what “per foot” includes. Ask whether the cap, tie-ins to neighbors’ walls and demolition are in the price.
- Read the warranty and payment terms. Get them in writing, with payments tied to completed work.
If your wall is a sheet bulkhead with wales and tie-rods, see the bulkhead repair cost guide.
Questions owners ask
Why do cost guides disagree?
They survey different jobs and regions, and they define 'repair' and 'replacement' differently. We show each figure with its source and date rather than averaging them into a number nobody measured.
Is repair always cheaper than replacement?
Per foot, usually. But if the anchors, toe or panels are failing along most of the wall, a series of repairs can approach the cost of a new wall. One cost guide suggests considering replacement once repair costs reach about half the cost of building new.
Does a longer wall cost less per foot?
Often, because mobilization, equipment and permitting are spread over more feet. A short repair can cost more per foot than a long one.
What does a lake seawall cost?
One cost guide lists $150–$400 per foot for a standard lake seawall, $400–$600 for medium complexity and $600–$1,000 for complex sites. Freshwater walls generally cost less than saltwater walls, but ice, water-level drawdowns and access still move the price.
Sources
- How Much Does It Cost to Repair a Seawall?, Angi. Accessed October 13, 2026. Updated August 3, 2026. National consumer cost guide.
- Seawall Costs, HomeGuide. Accessed October 13, 2026. Titled for 2026; originally published April 5, 2023; no last-updated date shown.
- How Much Does a Sea Wall Cost to Build?, HomeAdvisor. Accessed October 13, 2026. Updated June 20, 2026. New-construction estimates.
- Punta Gorda seawall repairs and FEMA funding, Gulfshore Business. Accessed October 13, 2026. Early-2024 article reporting post–Hurricane Ian conditions in Punta Gorda, Florida.