How Much Does a Retaining Wall Cost to Build? [2026 Data]

In 2026, the national average cost to build a retaining wall is $6,082, based on 2,556 verified projects from Angi Pros. Most homeowners pay between $3,191 and $9,206, with wall height, length, and material choice being the primary drivers of that spread. For a wall between 2 and 6 feet tall, expect to spend about $40 to $360 per linear foot.

How Much Does a Retaining Wall Cost per Linear Foot?

Wall height and length are the primary drivers of retaining wall costs, with taller structures costing more per linear foot due to the need for structural reinforcement. On average, a standard 2-foot-tall wall costs $40 to $200 per linear foot, whereas a 6-foot-tall wall costs up to $360+ per linear foot. The table below breaks down average retaining wall costs by length (in linear feet):

How Much Does a Retaining Wall Cost by Material?

The material you choose is one of the most significant factors in your retaining wall's total cost, with options ranging from budget-friendly vinyl ($10–$15 per square foot) to premium steel ($15–$150 per square foot). More affordable materials like vinyl and timber suit smaller, lower-load walls, while concrete, I-beam, and steel are better suited to heavy-duty or structural applications. 

The table below breaks down average retaining wall costs based on material, along with a description of each one:

Landscaper Costs

Labor accounts for a significant portion of retaining wall costs, with a local hardscape contractor charging $50 to $75 per hour or $15 to $50 per square foot. Rates vary based on wall materials and overall project complexity. Interlocking retaining wall blocks and pin mechanisms are the fastest and easiest to install, while hand-stacked limestone and I-beam walls require more time and skill, thereby increasing labor costs.

Retaining Wall Cost Factors: What Determines the Price?

Your yard's terrain and where you install your retaining wall will also impact your final cost. You must also consider drainage, soil type, site prep, and other factors.

Terrain 

Sloped or unstable terrain can significantly increase the price of building a retaining wall, with labor costs rising by 50% or more when the ground requires additional excavation. On sloped sites, contractors must build step-downs or terrace the slope to safely support the wall. Rocky or unstable soil adds further complexity, requiring additional digging and compaction before construction can begin.

Location

Where you install your retaining wall and the reinforcement it requires both affect your final cost. A shoreline wall demands far more structural support than a decorative retaining wall in your front yard, which is reflected in the price difference between them. The following table shows typical all-in cost ranges per linear foot based on retaining wall installation location:

Drainage 

Every retaining wall requires drainage to prevent erosion, using methods such as pipes, gravel, weep holes, or criblock designs. If your existing wall isn't draining properly, fixing it through excavation costs $60 to $70 per linear foot. Replacing the wall entirely adds $20 to $30 per linear foot for demolition, in addition to the cost of the new wall.

Soil Type 

The type of 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.

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.

Site Prep

Site preparation before retaining wall construction typically includes land clearing, land grading, and tree removal, all of which add to your total project cost. Walls taller than 4 feet also require a structural engineer to design them. Common site prep costs include:

• Structural engineer costs: $350–$750

• Land clearing costs: $110–$250 per hour

• Land grading costs: $900–$3,000

• Tree removal costs: $200–$2,000

Permits 

Most homeowners need a permit to build a retaining wall taller than three or four feet, though requirements vary by location. Building permits cost between $50 and $450 depending on your municipality. Check your local regulations before starting your project to avoid delays or fines.

Material Delivery

Material delivery is an additional cost your contractor may pass along, typically running $30 to $100 per truckload of stone, brick, or concrete blocks. Not all contractors include delivery in their base quote, so confirm this detail upfront to avoid surprises in your final bill.

Waterproofing

Waterproofing a retaining wall costs $2 to $10 per square foot and is one of the most effective ways to extend the wall's lifespan. It prevents water from seeping into wall joints, which can compromise structural integrity over time. Some materials, like vinyl, offer better natural water resistance than others, so ask your contractor whether waterproofing is necessary for your chosen material.

Reinforcements

Reinforcements such as rebar can increase both material and labor costs for your retaining wall project. A hardscaping pro will add rebar horizontally or vertically at a cost of $0.80 to $1.60 per square foot. Particularly long or tall walls may also require footings and specialized fill materials, with costs varying based on the selected fill type.

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

Additional Dirt Fill 

If your retaining wall project requires additional fill dirt, expect to spend $150 to $600 per truckload. The cost of fill dirt can range from $5 to $30 per cubic yard depending on the type and quantity needed.

Seasonality 

You can install a retaining wall at any time of year, but it will be more difficult if your contractor has to dig into frozen ground. This will increase labor costs. Save money by avoiding the winter and scheduling your job when the ground is still soft.

Upgrades for Your Retaining Wall

Retaining walls can be enhanced with a range of upgrades that improve both appearance and function, from planting flowers in mulch and adding landscape lighting to installing a raised paver patio or an outdoor kitchen. Common upgrade costs include:

• Flower beds cost: $1,000–$3,000

• Landscape lighting costs: $2,000–$6,000

• Fence installation costs: $1,500–$8,000

• Building a patio costs: $1,050–$8,100

• Building an outdoor kitchen costs: $5,500–$22,200

• Gravel installation prices: $300–$400

• Landscape curbing cost: $800–$2,100

• Decomposed granite installation costs: $60–$300

Maintenance

Long-term ownership of a retaining wall includes ongoing costs for inspections, repairs, and potential rebuilding that homeowners should plan for. Routine maintenance helps extend the wall's lifespan and prevents more expensive structural failures down the road. The following table outlines common ongoing retaining wall expenses:

Retaining Wall Additional Costs: What Else Should You Budget For?

Budgeting for a retaining wall is more manageable when you know where costs can be controlled and where savings are possible. Several practical strategies can reduce your total spend without compromising quality or safety:

• Keep wall height low: Limiting your wall to less than four feet eliminates the need for a structural engineer and reduces labor for supports and footings.

• Mix materials: A concrete or wood wall with a steel face can trim your budget by 25% to 50%, a common approach for steel retaining walls.

• Reuse existing materials: If you're replacing a wall, salvage materials still in good condition, or ask your contractor about recycled options at a lower cost.

• DIY prep work: Handle land clearing or finish landscaping yourself, and consider options like making your own mulch or laying decomposed granite for flower beds.

• Bundle projects: Wrapping your retaining wall into a larger landscape project may qualify you for contractor discounts on multiple jobs.

Does a Retaining Wall Add Value to Your Home?

Retaining wall projects can add up to 15% to a home's value, with an average return of 100% to 200%. You'll spend between $3,500 and $8,700 upfront, though some projects reach $14,000. In addition to the high return on investment for your retaining wall is their long-term non-monetary value. They'll last decades if constructed properly.

"When collecting bids on retaining wall work, it is really important to get a detailed scope of the installation work and make sure the proper base and drainage is installed for a long-lasting retaining wall," says Tara Dudley, Angi Expert Review Board member and owner of Plant Life Designs.

Retaining Wall Pro Costs: What to Expect 

DIY retaining wall construction can save $15 to $50 per square foot in labor costs, which translates to $300 to $2,000 in savings for a wall that’s 20 feet long and 2 feet high. However, material delivery costs and equipment rental fees can offset those labor savings. For anything more complex than a basic wall, hiring a retaining wall installer near you is the safer and more cost-effective long-term choice.

Also, if you need something more complex than a basic wall, such as a cantilevered wall that holds back a lot of heavy stone or soil, it's best to hire a retaining wall installer near you.

Here’s why it’s ideal to hire a professional retaining wall installer

Installing a retaining wall requires specialized tools, expertise, and careful precision. Here’s why it’s best to work with an experienced installer:

• Professionals have the knowledge and expertise to prevent problems like soil erosion, collapse, and drainage issues.

• Working with a pro ensures your project complies with local building codes and zoning laws.

• DIY installation can lead to wall failure, shifting, and costly future repairs.

• Reputable installers often carry insurance and offer warranties for added peace of mind.

• A professionally installed retaining wall enhances curb appeal, boosts security, and can increase resale value.

If you want to DIY a retaining wall installation

To assist your pro with the installation, consider helping out with the following tasks:

• Remove trees, shrubs, or landscaping from the work area

• Keep tools, materials, and equipment organized and easily accessible

• Mix or more soil and mulch for backfilling and landscaping

• Plant shrubs or flowers around the wall after installation is complete

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’ve surveyed thousands of real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from 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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