Question: how much does it cost to replace a garden wall?
Answer: The average cost of building a retaining wall is $5,412. Most homeowners find themselves spending between $3,193 and $8,432. The cost of retaining wall materials ranges from $3 to $40 per square foot. Wall block prices fall between $10 and $15 per square foot, while precase, poured concrete runs $20 to $25.