Seawall Cost Calculator
Estimate seawall, bulkhead, riprap, or shoreline protection cost by linear foot, material, access, local market, and contingency.
Project Inputs
Measured in linear ft
Common residential bulkhead with cap, tie-backs, and backfill
Typical U.S. labor and material pricing
Planning Range
$20,000 - $112,000
Most comparable seawall projects land near $52,000 before contingency.
Typical Budget
$52,000
With Contingency
$58,240
Typical Rate
$650/linear ft
Buffer Added
$6,240
Rate Screen
- Low: $250 per linear ft
- Typical: $650 per linear ft
- High: $1,400 per linear ft
- Scope factor: 1.00x
- Market factor: 1.00x
Seawall Estimate Notes
Seawall pricing is highly site-specific. A short, accessible residential bulkhead can price very differently from a high-exposure waterfront project that needs engineering, marine equipment, erosion controls, mitigation, and multiple permits.
Treat this calculator as a bid-screening tool. Before hiring, compare wall height, material, embedment depth, tie-back spacing, drainage, backfill, cap details, permits, engineering, and whether old-wall removal is included.
Frequently Asked Questions
How much does a seawall cost per linear foot?
Seawall and bulkhead projects often range from about $250-$1,400+ per linear foot depending on material, height, soil, engineering, water access, permits, tie-backs, backfill, drainage, and erosion control. Waterfront access and permitting can move the final bid more than the wall material alone.
Is vinyl, wood, concrete, steel, or riprap cheapest?
Riprap and wood can be cheaper in simple conditions, while vinyl sheet pile is common for residential bulkheads because it resists rot. Concrete and steel systems usually cost more but may be required for higher loads, deeper water, or stricter engineering requirements.
Do seawalls require permits?
Usually yes. Shoreline work often requires local, state, environmental, coastal, floodplain, or Army Corps review depending on the property and waterway. Permit, survey, engineering, and mitigation requirements should be included before comparing bids.
What makes a seawall estimate expensive?
Deep water, soft soils, poor machine access, long material delivery, dewatering, marine equipment, tie-backs, erosion control, drainage, backfill, wave exposure, and environmental mitigation can all increase the price per linear foot.