Free tool 20+ years on the water 8 states served
Last updated: June 2026 — pricing from real seawall projects.
A seawall typically costs $150–$650+ per linear foot, depending on the material, wall height, length and how much wave energy the site takes. Use this free calculator to estimate your seawall price by material — vinyl, timber, steel, concrete or riprap armor stone — then download a PDF estimate to keep. Protecting a quieter inland bank instead? Our bulkhead cost calculator uses the same baseline ranges.
Quick answer: most seawalls cost $150–$650+ per linear foot installed. Wood and riprap are usually the lowest-cost options; vinyl is the popular low-maintenance choice; steel and concrete are used on taller walls and high wave-energy coastlines where surge and wake loads are highest.
Seawall pricing is quoted per linear foot, and a handful of factors move that number up or down. The calculator above accounts for the big ones; here's what's behind the range:
| Material | Typical cost / LF | Best for | Typical lifespan |
|---|---|---|---|
| Marine-grade vinyl | $200–$450 | Low-maintenance freshwater & mild coastal shorelines | 40–50+ years |
| CCA treated timber | $150–$350 | Budget projects, sheltered low-energy banks | 20–30 years |
| Steel sheet pile | $300–$600 | Tall walls, high wave-energy & commercial sites | 30–50 years |
| Concrete | $350–$650+ | Maximum lifespan, surge- & hurricane-exposed coasts | 50+ years |
| Riprap rock armor | $150–$350 | Wave-energy dissipation, gentle natural slopes | 20–40 years |
Ranges are a baseline from real projects. The calculator's live number is adjusted for your wall height, so it lands inside these full-material ranges rather than matching the endpoints. Switch the calculator's water type to “Saltwater” to add a coastal adjustment; tidal, surge-exposed and brackish sites are confirmed after a site review.
Explore detailed pricing: seawall construction & cost guide, Galveston Island seawall cost, bulkhead cost, compare all our cost calculators, or browse our completed waterfront projects.
Honest answers about seawall pricing — what a wall costs per foot, how it differs from a bulkhead, why coastal jobs cost more, when a riprap toe helps, and what this estimate covers.
A seawall typically costs $150 to $650+ per linear foot installed, depending on material, wall height and wave exposure. Typical ranges are CCA timber $150–$350, marine-grade vinyl $200–$450, steel sheet pile $300–$600, concrete $350–$650+, and riprap rock armor $150–$350 per linear foot. Multiply the per-foot rate by your shoreline length for a project ballpark. For local pricing examples, see seawall cost in Galveston Island, Fox Lake, across Texas and Illinois.
Both are hard vertical shoreline walls, but a bulkhead mainly retains soil on calmer, low-to-moderate energy banks, while a seawall is built to take a beating — coastal bays, the open Gulf, busy boating lakes and storm surge. Seawalls lean on deeper embedment, heavier hardware, and often a riprap toe to absorb wave energy. If your site sees real wave or wake action, you want seawall-grade construction; for a sheltered inland bank, a bulkhead is usually enough.
Saltwater, brackish and tidal sites need site-specific wave engineering, corrosion-resistant materials and heavier hardware, plus the bigger wave and surge loads of open water — so coastal seawalls cost more than the freshwater baseline. Switch the water type to “Saltwater” and the calculator adds a coastal adjustment to the baseline; your final coastal price is confirmed after a site review.
On higher-energy shorelines, a riprap toe — armor stone placed at the base of the wall — absorbs and dissipates wave energy before it scours the foundation, and it can extend the life of a vinyl, steel or concrete face. Whether it's worth the added stone and placement cost depends on your wave exposure and water depth, which is one of the things we confirm on a site review.
The per-foot range covers the seawall structure itself — face panels or sheet pile (or a poured concrete face), batter and tie-back anchors, a riprap toe where specified, and the cap. It excludes demolition of an old wall, backfill, drainage, permits and mobilization, which are quoted separately because they depend on site conditions.
It's a planning ballpark, not a binding quote. The ranges come from real seawall projects and are adjusted for your material and wall height. The firm price comes after a site review of soil, access, wave exposure and water conditions — estimates are reviewed by Roman Ross, Marine Construction Estimator at Shore Protect Construction.
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