How Much Does Riprap Cost? [2026 Data]

In 2026, the national average cost for riprap runs $20,000, depending on stone type and project scope. Most homeowners spend $10,000 to $30,000, with costs driven by the type of riprap stone, site accessibility, and slope steepness. On the high end, projects can reach up to $120,000 when specialized equipment, permits, and site prep are factored in.

Riprap Cost Factors: What Determines the Price?

Riprap installation averages $20,000, but your final cost depends on several variables, including property conditions, stone type and quantity, site accessibility, and the extent of prep work required.

Riprap Type and Size

Riprap is made with fieldstone ($65 to $105 per cubic yard), quarry stone, granite, or limestone ($85 to $105 per cubic yard) in a variety of sizes that are ideal for different purposes. Here is a breakdown of riprap cost by stone type in 2026:

Shoreline Size

Shoreline size is one of the biggest cost drivers in a riprap project, since the length, width, and depth of the area directly determine how much material you need. Riprap is sold by the ton or cubic yard, but contractors often price the overall project by the linear foot (at $70 to $400), so costs scale with every dimension of your shoreline. Here's how riprap costs vary by the measurement of riprap you need (which hinges on shoreline size):

Materials

Materials alone for a riprap project start at $2,200, covering both the stone and the underlayment fabric that protects the soil and keeps the rocks in place. Underlayment costs range from $45 for a small 40-foot roll to over $3,050 for a heavy-duty 300-foot roll, depending on the size and weight of the fabric.

Because riprap is not a DIY-friendly project, always budget for professional labor on top of material costs. Materials costs vary significantly by amount in tons, as shown in the breakdown below:

Labor

Riprap labor involves multiple specialists, and materials and labor combined costs $70 to $400 per linear foot, depending on site conditions and installation method. Hiring a structural engineer costs $200 to $1,500 total, while drainage pros charge $50 to $300 per hour for installation.

Installation method also affects your rate, with costs varying by approach as shown in the table below:

Prep

Prep work for a riprap project costs $3,900 to $27,700 on its own, covering site surveys, environmental impact assessments, and excavation. A site survey runs $800 to $5,500, an environmental impact assessment adds $1,500 to $15,000, and excavation costs reach up to $6,700, with that figure climbing higher when barges are required instead of standard excavators at hard-to-access sites. 

Environmental assessments confirm that riprap is the right erosion solution and that the project will not disrupt local ecosystems, making them a necessary step before installation begins.

Location

Shoreline accessibility directly affects riprap installation cost, with difficult sites featuring dense trees, steep slopes, or high wave energy reaching $400 per linear foot. Oceanfront and large-lake properties consistently cost more than smaller, calmer bodies of water due to the combined demands of greater wave energy and more complex site conditions.

Permits

Building permits cost $525 to $3,050 and are required before installation can begin. Because riprap work takes place near bodies of water such as lakes and oceans, permits in this category tend to fall at the higher end of that range and require multiple site inspections.

Riprap Ongoing Costs: What to Budget For

Riprap is a durable material that protects your home and property from erosion and flooding, but it does require ongoing attention including regular weeding, annual inspections, and periodic repairs to stay effective.

Maintenance

Routine upkeep is limited to weeding the area and preventing deep-rooted plants from establishing near the stones. Weed pulling costs $30 to $300 per every 1/4 of an acre, making ongoing maintenance costs relatively modest.

Repairs

Major storms can cause significant damage, and repairing a seawall costs $100 to $250 per linear foot, so addressing damage promptly is essential to prevent further deterioration of the entire installation. Riprap faces constant exposure to water and weather, so plan to inspect the full length of your shoreline at least once per year and after any major storm or flood event.

Insurance

Insuring a waterfront home against erosion and flooding is an important part of owning riprap-protected property. Standard home insurance costs $900 to $1,800 per year but typically does not cover flood damage, so most waterfront homeowners also need hazard insurance at an additional $1,250 to $1,650 annually.

Riprap Additional Costs: What to Budget For

A riprap installation is a natural opportunity to invest in other waterfront improvements that increase your property's accessibility and appeal, from adding a dock to refreshing the surrounding landscape.

• Dock installation cost: $4,000 to $26,000

• Landscaping cost: $1,250 to $6,300

• Water feature installation cost: $950 to $5,000

• Outdoor lighting cost: $3,000 to $6,000

• Pond maintenance cost: $450 to $5,000

Tips to Reduce Riprap Cost

Riprap is a high-cost project, and it’s essential to invest in high-quality, durable rock that’s professionally installed in order for the project to properly limit erosion, minimize flooding risks, and keep your property stable and resilient.

Still, there are a few ways to lower the cost of installing riprap.

• Consider stone costs: While you want to opt for durable stones, you can reduce the project total by opting for lower-cost stones over the most expensive options.

• Explore installation types: If your site allows, you could save hundreds of dollars per cubic foot with random installation over hand-placed riprap.

• Check for tax credits: There aren’t federal tax incentives for residential erosion control. However, some municipalities and states may offer tax credits for riprap installation or other erosion control projects.

Why You Should Hire a Riprap Installation Pro

Riprap installation is not a DIY-friendly project. Hiring a local drainage installation expert ensures that the rock has been installed to high standards, which gives you peace of mind that it’s ready to withstand erosion, water damage, and the effects of long-term weather exposure. When you weigh the riprap installation costs of $50 to $300 per hour against the long-term benefits, it’s clear to see that this investment is well worth it.

Here’s why it’s ideal to hire a riprap installation pro

There are countless benefits to leaving riprap installation to professionals, such as:

• Accessing expertise in land grading and engineering

• Ensure safe, long-lasting placement

• Protect your shoreline and property from erosion and water damage

• Ensure compliance with all environmental regulations

• Get access to heavy machinery

• Ensure site-specific riprap design for a custom solution

• Get peace of mind that your riprap will last for years to come

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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