Building a cinder block wall costs $60 to $240 per linear foot or $15 to $30 per square foot. An 8'x15' cinder block fence costs $1,800 to $3,600 to install. Cinder block prices are $1 to $5 per block or $115 to $225 per pallet (70-90 blocks). The labor cost to lay CMU blocks adds $5 to $10 per block.