【How-to】How much is a retaining wall for a pool

The average cost of building a retaining wall is $5,675. You’ll likely spend between $3,195 and $8,737, but some projects hit $14,000. You’ll pay $20 to $60 per square foot or $30 to $150 per linear foot on average, with large, complex builds with high-end materials costing up to $125 per square foot.