What Is The Cheapest Retaining Wall To Build For My Garden?

The cost of retaining wall materials varies from relatively low to exceptionally high. Treated pine is the cheapest alternative, costing $250 per square foot, but it comes with its own set of disadvantages.

Retaining Walls Alternative

  • Wooden Timbers – For retaining wall alternatives, wooden timbers and railroad ties are common choices. They’re particularly useful for terracing hillsides and building raised flower or garden beds. Treated wood gives a landscape design a natural look and adds durability. A wooden timber wall costs between $15.00 and $25.00 per square foot to build.

  • Gabion Walls – Gabion walls are retaining wall alternatives that use cages filled with rock, stone, or sand to allow water to flow freely down the slope while still providing protection for the slope. These cages are connected by wires and positioned so that they are angled back into the slope rather than stacked vertically. Installation costs for Gabion walls range from $4.00 to $40.00 per square foot.

  • Soil Bioengineered Walls – Living materials are used in the design of soil bioengineered walls, which are relatively new to the landscaping industry. To provide immediate support that will develop into the soil, cut branches are combined with either a geotextile or rocks. The wall will be covered in a natural covering and texture as the vegetation grows. The most common use for this form of retaining wall is to help preserve and restore fragile watersheds. Installing a soil bioengineered wall will cost anything from nothing to thousands of dollars for the do-it-yourselfer.

  • Natural Stone Walls – Natural stone walls are a form of retaining wall that can be used for a variety of purposes. Natural rock walls are often used in raised gardens, but they can also be used as retaining walls to avoid landslides and along coastlines to prevent land falls and protect the coast from high tide. When large enough rock slabs are available, they are often used for seating in some cases. A natural rock wall construction costs between $8.00 and $12.00 per square foot on average.

  • Reinforced Soil Slopes – Reinforced soil slopes are a simple and fast construction method that involves using a geotextile, such as polyethylene or polypropylene, to lock existing soil into place and create a reinforced mass. Reinforced soil slopes can withstand larger settlements and movement caused by earthquakes due to the resilience of the geotextile used in their construction. A reinforced soil slope costs between $3.00 and $27.00 per square foot on average.

Choose the cheapest or the best?

Mind that a well designed retaining wall can last a long time. Do you want to go for the least expensive retaining wall material or will a more expensive alternative be a better investment?

If a retaining wall is professionally installed it might cost (per square metre):

  • $250 to $450 for treated pine or hardwood timber
  • $300 to $500 for sandstone blocks
  • $400 to $680 for reinforced concrete blocks
  • $550 to $750 for concrete Besser blocks

The cost can vary depending on the job’s difficulty. The installation would be less expensive if the surface is smooth and nothing needs to be removed. The cost would be higher if the surface is uneven or if stone blocks must be removed.

Are You Looking for a Company to Build Concrete Retaining Walls for Your Home? 

Spaulding Concrete has been the SF Bay Area’s top Concrete Retaining Wall Builder for over 30 years.  We’re here to build your home’s retaining walls that will last a lifetime, no matter where they need to be placed. We have the specialized equipment, services and professional experience that you need to make permanent improvements to your landscaping. To get you started on the right foot, we would be happy to give you a free quote for your retaining walls. When you reach out by phone or email we will have one of our experts answer any questions you have and explain how we can restore integrity and structural stability to your home or landscape permanently. The qualified concrete experts at Spaulding Concrete will be on schedule, on budget and meet or exceed standards by careful planning, professional execution, and strict quality control. To schedule your free quote, contact us today! We are proud to serve Orinda, Lafayette, Moraga, Pleasant Hill, Concord, Martinez, Pittsburg, Antioch, Brentwood and the surrounding areas.