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Whether it is for reinforcement and the prevention of soil erosion, or purely decorative, a retaining wall requires special equipment, knowledge, materials, and skills which fall far outside of the average DIY enthusiast. For the purpose of this discussion we will consider the costs of building a retaining wall from cast concrete and at a length of 50 linear feet. We will also take into consideration various heights as well, ranging from six, eight and ten feet.
The average costs will include:
(50 linear feet, 8' high)
Low: $12,800 (50 linear feet, 6' high)
High: $19,900 (50 linear feet, 10' high)
Cost to build a retaining wall varies greatly by region. Get free estimates from retaining wall contractors in your city.