average cost for blacktop
1 CostHelper readers report paying $2,300 -$10,300 to install a new asphalt driveway or completely remove replace an old one, or $1.67 -$2.72 a square foot, with an average cost of $2.24 a square foot. Some experts recommend sealing a driveway every year, depending on climate and other conditions. 2  Do-it-yourself supplies can cost $50 -$200 depending on the size and condition of the driveway, and the quality of the sealer. 3  Professional driveway sealing can cost $200 -$500 or more.