New Seawall Installation Cost in Palm Beach County — 2026 Guide
New Seawall Installation Cost in Palm Beach County — 2026 Guide
You already have a resource on this site covering seawall repair costs. This guide is different — it covers the cost of a brand-new seawall installation from the ground up. Whether you are building on a vacant waterfront lot, replacing a wall that has reached structural end of life, or putting in a first seawall on a property that never had one, the cost drivers are meaningfully different from a repair project and the figures in repair cost guides do not apply.
Every number in this guide comes directly from JKT Marine Construction's project experience throughout Palm Beach County in 2025 and 2026. These are real installed costs from actual projects — not manufacturer estimates, not national averages from home improvement websites, and not ballpark figures padded for unknown conditions.
What a Complete New Seawall Installation Cost Includes
Before the numbers, it is important to understand what a complete, fully installed seawall cost actually covers. The gap between a low quote and a complete quote in Palm Beach County's marine construction market can be tens of thousands of dollars.
A fully installed new seawall in Palm Beach County from JKT Marine includes engineering coordination with a licensed marine engineer. It includes all permit application preparation and fees — Palm Beach County Building, SFWMD, FDEP, and Army Corps of Engineers where applicable. It includes equipment mobilization and barge costs where required. It includes seawall panel material — vinyl sheet pile, precast concrete, or composite depending on your waterway and site. It includes panel installation to the engineered embedment depth. It includes tieback rod and deadman anchor installation. It includes concrete cap forming and pouring to current county elevation standards. It includes drainage system installation. It includes final county inspection coordination and site cleanup and restoration.
Every one of these components is included in every JKT Marine quote before you sign. There are no change orders for permits that turned out to be required. There are no line items added after the contract for engineering that was always going to be needed. The price you receive before signing is the price you pay.
New Seawall Installation Cost by Material — Palm Beach County 2026
Vinyl Sheet Pile Seawall
Vinyl sheet pile is the most frequently installed seawall material on residential canal properties throughout Palm Beach County and the most competitively priced for protected canal applications where structural mass is not the primary engineering requirement.
Typical installed cost: $350 to $550 per linear foot.
A typical 80-foot residential canal seawall in Palm Beach County in vinyl sheet pile — including engineering, permitting, panels, tieback system, and concrete cap — runs $28,000 to $44,000 fully installed. A 100-foot wall runs $35,000 to $55,000.
Precast Concrete Seawall
Concrete seawall installation carries a higher cost than vinyl for equivalent wall lengths — reflecting greater material weight, the barge and crane equipment typically required, and the more complex panel handling logistics involved.
Typical installed cost: $450 to $700 per linear foot for standard residential applications. $600 to $900 per linear foot for Intracoastal Waterway and deep water installations where barge positioning and extended embedment depth requirements add to equipment and material costs.
A typical 80-foot concrete seawall on the Intracoastal in Palm Beach County runs $48,000 to $72,000 fully installed — with the higher end reflecting properties where water depth, site access, or Army Corps of Engineers permitting add to the overall project scope.
Composite Seawall Systems
Composite systems — combining vinyl sheet piling with enhanced concrete cap work and superior tieback configurations — fall between vinyl and standard concrete on cost and deliver the longest expected service life of the three material options.
Typical installed cost: $500 to $800 per linear foot.
A typical 80-foot composite seawall installation in Palm Beach County runs $40,000 to $64,000 fully installed.
What Drives Cost Up — and What Keeps It Down
Understanding what pushes new seawall installation cost higher or lower helps Palm Beach County waterfront homeowners evaluate quotes intelligently before committing to a project.
Water depth increases cost. Deeper waterways require panels driven to greater embedment depths — using more material and more drive time. Intracoastal Waterway properties in Palm Beach County typically have greater water depth than interior residential canals, which directly contributes to their higher installed cost per linear foot.
Barge requirement increases cost. Vinyl seawalls on many residential canals can be installed entirely from the land side without a barge. Any project requiring barge positioning adds mobilization, barge day rate, and marine crew costs that can add $5,000 to $20,000 to the overall project cost depending on duration and vessel size required.
Existing wall demolition increases cost. If you are replacing an existing seawall, removing and disposing of old panels, cap, and hardware adds $5,000 to $20,000 depending on wall length and what the existing structure is made of.
Army Corps permitting increases cost and timeline. Intracoastal and navigable waterway projects requiring Army Corps of Engineers authorization carry higher permitting fees and longer permit timelines than standard canal projects.
Land-side installation reduces cost. When vinyl sheet pile can be installed using land-based vibratory hammer equipment without a barge — which is possible on many Palm Beach County residential canal properties — installation costs are meaningfully lower than for projects requiring water-based equipment access.
Longer walls reduce cost per foot. Mobilization, permitting, and engineering costs are relatively fixed regardless of wall length. Longer walls spread these fixed costs across more linear feet, reducing the per-foot installed cost on larger projects.
A Note on Quotes Significantly Below These Ranges
Every year JKT Marine meets Palm Beach County waterfront homeowners who received quotes dramatically below the ranges in this guide. Some of these low quotes reflect genuinely different work — quotes that exclude engineering, use below-spec materials, skip required permits, or do not include the tieback and anchor system the wall actually needs to perform structurally over time. Others reflect contractors who add those costs back in change orders after the contract is signed.
A complete, honest new seawall installation quote for Palm Beach County in 2026 falls within the ranges in this guide. Quotes significantly below these numbers warrant careful scrutiny of exactly what is included — and what is not.
Get a Free On-Site Estimate for Your Seawall Project
The most reliable way to understand what your specific new seawall installation will cost is a free on-site assessment from JKT Marine's ownership team. We visit your property, evaluate your waterway conditions and site access, and provide a complete line-item quote with no hidden components and no changes after you sign.
Call (561) 418-0383 or email info@jktmarine.com.
JKT Marine Construction — Licensed CGC1537758 · Fully Insured · Family-Owned · All Permits Handled · Serving Palm Beach County, Broward County & Martin County