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*The Angi rating for Retaining Wall Installation companies in Dunlap, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Retaining Wall Installation needs.

*The HomeAdvisor rating for Retaining Wall Installation companies in Dunlap, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Retaining Wall Installation needs.

Last update on March 31, 2025

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Avatar for L & Q LANDSCAPING-CONSTRUCTION, LLC
L & Q LANDSCAPING-CONSTRUCTION, LLC
3.7(
7
)
Retaining Wall - Install

Serving Dunlap, IL and surrounding areas

In business since 2021

Free estimates

Small jobs welcome

"Great team of people. Very efficient, courteous, and they did an amazing job! Very satisfied with the landscaping job they did! Will definitely be hiring them for my next job project!"
Brick Patio
Concrete
Rock and Stone
Rubber Mulch
Brick and Stone

+2

Response time10 mins
Response rate100%
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Retaining Wall Installers questions, answered by experts

Small retaining walls still require a foundation of some kind, typically a concrete footing. This helps to ensure the wall is structurally sound and prevents the ground from shifting over time, especially during those winter freeze/thaw cycles. The footing helps spread the weight of the wall and the load it carries over a larger area of the ground, thus assisting with stability. This is true of small retaining walls, larger rock garden walls, and the like. 

Sand and gravel are two suitable options for filling behind a retaining wall. If you’re building your own retaining wall, you’ll complete this part of the process—known as backfilling—after you finish laying the blocks. Make sure not to skip it—otherwise, you could wind up with drainage issues, which can cause your retaining wall to collapse.

Costs range from $5,000 to $15,000, depending on size, material, and design complexity.

Railroad ties can be good for retaining walls, but it depends on the area. They have a desirable rustic look and are durable. The problem is they’re treated with creosote, a preservative the EPA says poses a risk to humans and wildlife. Over time, the preservative seeps out of the wood and into the ground. Many areas have banned the use of creosote-treated wood on residential properties. If your area does allow it, never use railroad ties near an edible garden or drinking water source. Instead, use wood that’s treated with an EPA-approved preservative or a wood-alternative composite material.

Generally speaking, a retaining wall should be between 3 and 4 feet high, depending on variables such as the wall-building material, the purpose of the retaining wall, and more. If you want your retaining wall to be taller than 4 feet, check with your local building ordinance office for the maximum allotment. You may also need a special permit for retaining walls over 4 feet tall.

The Dunlap, IL homeowners’ guide to retaining wall installation services

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