Search Hiring concrete retaining wall contractors Most retaining walls are 8” thick for heights of 4’ to 6’ tall, and walls must be 12” thick for retaining structures 10’ to 12’ tall. How thick is a concrete retaining wall?Ī concrete retaining wall is 6” to 12” thick, depending on the height, reinforcements, design, and soil type. Taller walls also require larger and deeper foundations designed by engineers. In Northern regions, footings should be deeper to go below the frost line for stability. How deep does a concrete retaining wall need to be?Ī concrete retaining wall needs a 1.5’ to 2.0’ deep footing for most walls 4’ to 8’ tall. Exterior concrete stain costs $30 to $60 per gallon that covers 200 to 400 square feet. You can stain concrete retaining wall blocks in many colors. Can you stain concrete retaining wall blocks? Search Concrete retaining wall FAQs How long do concrete retaining walls last?Ī concrete retaining wall lasts 50 to 100 years on average, depending on the installation and design quality, maintenance level, and soil conditions. Prices depend on the block type and size. Wall-surface finish – Textured finishes or coatings cost $1.50 to $10.00 per square foot of surface area from sealants to various siding options.Ĭost of concrete blocks for retaining wallsĬoncrete blocks for a retaining wall cost $2 to $10 per block on average or $4 to $20 per square foot for materials only. flat ground – Retaining walls on slopes cost up to 3 times more than building on a level surface due to deeper footings and extra drainage. Permits – A permit costs $50 to $450 for walls more than 3’ to 4’ tall, depending on the location and design.Įngineering plans – A structural engineer charges $100 to $220 per hour for designing 3’ to 4’ tall walls or higher. Additional excavation is sometimes necessary to stabilize all soil behind the wall before building. Landscaping – Landscaping costs $50 to $100 per hour for additional garden projects.īackfill – Delivering fill dirt costs $150 to $600 per truckload or $15 to $50 per yard.Įxcavation – Removing old retaining walls and dirt costs $130 to $230 per cubic yard, including disposal. Obstacles – Tree stump removal costs $160 to $350 on average.ĭrainage – Installing a French drain costs $10 to $30 per linear foot to prevent erosion and flooding near the retaining wall. Site leveling – The cost to level or regrade land is $0.40 to $2.00 per square foot. Site access – Rugged and sloped terrain or sites with limited access for delivery trucks or heavy machinery increase labor time. Builders sometimes change a wall’s planned location to avoid cutting underground utility lines.
Size – Taller retaining walls need stronger foundations and additional reinforcements.ĭesign – Complex designs, curves, and steps take more labor time.įoundation – Concrete footings cost $18 to $55 per linear foot according to the depth. Labor – Retaining wall contractors charge $33 to $90 per linear foot. Many local conditions impact the cost to build a concrete retaining wall:
LARGE RETAINING WALL BLOCKS 10 X33 INSTALL
Concrete-bag retaining walls are an easy DIY project built by stacking bags up to 2’ to 3’ tall max.Ĭost to install a concrete retaining wall Factor A 60- to 80 lb.-bag of concrete mix costs $3 to $5 per bag. Concrete bag retaining wall costīuilding a 25’x3’ concrete bag retaining wall costs $360 to $600 in materials. Installation takes less time than on-site-built concrete walls. These factory-built panels require crane installation after delivery to the site. Concrete precast panel wall costīuilding a concrete precast panel wall costs $25 to $40 per square foot. Total costs depend on the size, foundation type, wall finish, and reinforcements. Large blocks are more difficult to transport but quicker to install with heavy machinery.Ī cinder-block retaining wall costs $60 to $210 per linear foot for 3’ to 6’ tall walls or $20 to $35 per square foot of surface area with backfill and footings. These larges blocks create a gravity wall, where the mass and weight of the blocks are self-supporting.
Large concrete retaining wall block prices are $25 to $100 per block, depending on the size.īlock sizes are from 2’x2’x2’ to 6’x2’x2’ each. Large concrete retaining wall blocks costĬommercial or large concrete retaining wall blocks cost $60 to $270 per linear foot for 3’ to 6’ tall walls or $20 to $45 per square foot installed. These modular concrete blocks are quick to install with their mortar-less design as they stack together.
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