How Much Does a Retaining Wall Cost in Baltimore? [2026 Data]

The average cost of a retaining wall in Baltimore, Maryland, is $6,153, with prices ranging from $3,333 to $9,106. Cost is mainly determined by wall length, height, and material, but you’ll also need to account for site prep, drainage, and reinforcement when setting your budget. Explore these and other factors affecting how much you’ll pay for a retaining wall in Baltimore.

Retaining Wall Cost Factors 

The cost to install a retaining wall in Baltimore, Maryland, depends on the wall's size and material, terrain, soil type, and any necessary add-ons such as drainage and reinforcement. Every retaining wall is customized for the specific terrain it’s installed in, so there’s no shortage of retaining wall ideas and features to give you the right wall for your yard. 

Size

The length and height of your wall have the biggest impact on price, with taller retaining walls costing more per linear foot. For example, a 2-foot-tall retaining wall costs $40 to $200 per linear foot, while retaining walls up to 6 feet high cost about $360 per linear foot. A small retaining wall for a garden bed will cost significantly less than a driveway retaining wall or one designed to prevent washout for a large area of your yard. 

The following table summarizes common retaining wall sizes and their average costs. Note that the lower end of the cost range is for walls 2 feet high, while the higher end of the cost range is for walls 6 feet or taller.

Materials

The type of material you choose will greatly affect what you pay. A concrete retaining wall costs more than a vinyl or timber one, but it has a longer lifespan and is more durable over time. The most common retaining wall materials in Baltimore are concrete and timber, but there’s a wide range of options to suit the specifics of your landscape. Here’s a look at the average prices for common retaining wall materials per square foot.

Material Delivery

Your contractor may charge an extra fee for material delivery. If that’s the case, expect to spend $30 to $100 per truckload of stone, brick, or concrete blocks. Expect to pay more if you’re using materials that aren’t readily available locally and must be shipped from farther away.

Terrain

The terrain and soil composition in the surrounding area impact the cost of building a retaining wall. Additional labor is needed for sloped grounds, which can increase labor costs by 50% or more. In this situation, the contractor must excavate to construct step-downs or terrace the slope to accommodate a safe retaining wall. 

Site Prep

Your contractor will prep the site before building the retaining wall. This may include land clearing, land grading, and tree removal. Here’s what you might pay for site prep.

Drainage

All retaining walls need drainage, as their purpose is to stop erosion. There are various methods, including pipes, gravel, weep holes, and criblock designs. If you already have a retaining wall that isn’t properly draining, you may need to spring for repairs or a full replacement. 

Expect to spend $60 to $70 per linear foot on excavation to fix drainage issues. If you’re replacing the wall, it will cost $20 to $30 per linear foot to demolish the old wall and install a new one.

Soil Type

The soil in your yard will determine the type of retaining wall you can build. Certain walls work better with certain soil types. For example, malleable clay soil may not be sturdy enough to support heavy wall materials. Baltimore soil tends to be rich in clay, so retaining walls may require additional reinforcement and drainage for long-term stability.

In addition, rocky soil with many boulders will require your contractor to spend extra time clearing the land. It will also be more difficult to excavate, so you can expect higher labor costs across the board.

Reinforcements

Your retaining wall may need reinforcement, which could increase your material and labor costs. A hardscaping pro will add rebar either horizontally or vertically. Rebar costs around $0.80 to $1.60 per square foot. If your wall is particularly long or tall, it may also require footings with different fill materials (costs vary by material).

A structural engineer adds reinforcements when:

• The wall is taller than 4 feet

• The wall is longer or taller than average

• You’re installing a sea wall

• You live in a climate with extreme weather

Waterproofing

Waterproofing costs $2 to $10 per square foot and can increase the lifespan of your retaining wall. This stops water from seeping into wall joints, which can damage the structural integrity over time. Baltimore’s higher-than-average annual rainfall makes waterproofing a good investment in your retaining wall’s longevity. Some materials (like vinyl) are more waterproof than others, so make sure to check with your contractor.

Retaining Wall Pro Costs

Building a retaining wall isn’t a project to tackle as a DIY. Hire a retaining wall installer in Baltimore, Maryland, to ensure your wall is structurally sound and constructed to resist environmental pressure over time. An improperly installed retaining wall can be a landscaping disaster, so it’s best to leave this job to the pros.  

Labor

Labor is a significant part of retaining wall costs. A local hardscape contractor will charge an average of $50 to $75 per hour or $15 to $50 per square foot. Their rates will also depend on the wall’s materials and the overall complexity of the project. Interlocking retaining wall blocks or pin mechanisms are the fastest and easiest to install compared to hand-stacked limestone or I-beam retaining walls.

Permits

You’ll need to obtain a permit from the City of Baltimore before building a retaining wall. Permit fees vary based on the scope of the project, but expect to pay $10 per 100 square feet (or fraction thereof), with a minimum fee of $25. Your retaining wall installer can pull the permit and let you know your total permit cost. 

Additional Pros to Consider Hiring 

Depending on the specifics of your yard’s terrain and the size of the retaining wall, you may need to hire a structural engineer to design the wall or sign off on its structural integrity. A structural engineer charges between $70 and $250 per hour or a flat fee of $350 to $750 to review plans.

Does a Retaining Wall Increase Home Value?

Retaining walls and other hardscaping features add value to your Baltimore, Maryland, home. A well-built retaining wall can add up to 15% to your home’s value, with an average return on investment (ROI) of 100% or more. Retaining walls can improve a property’s drainage, stability, and usable yard space, so they’re a valuable feature for prospective homebuyers. 

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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