Concrete-Set Flagstone Patio Costs Also called wet-laid flagstone patios, concrete-set patios are the most labor-intensive option at $19 to $21 per square foot, or an average cost of $1,900 to $7,200.

Generally concrete stamping is done with installations of new concrete driveways, walkways, and patios ... is that it costs much less to create a concrete driveway stamped to look like slate ...