At an installed cost of about $7,000, itâs an appliance that makes very little financial sense for most people. Tesla lists the price of the battery at $3,500, but that does not include installation, or an additional piece of equipment called an inverter that is needed to connect the battery to the home.
Strong blacktop driveways are typically built using crushed angular gravel as a base. This gravel needs to be a minimum of 6 inches thick for light vehicle traffic such as cars. If you expect larger commercial trucks on your driveway, I would install a gravel base that is a minimum of 8 inches thick. The soil beneath the gravel must also be of good quality.
1 A gravel driveway starts at roughly $0.75 -$3 or more a square foot, or $300 -$1,000 for a 12'x25' single-car driveway. 2  Costs can double for a roadway-quality driveway. 3  Loose gravel will need replenishing periodically, but a correctly designed, installed and maintained gravel driveway can last 50-100 years or more. Macadam typically lasts 6-10 years and provides the decorative and rustic appearance of a gravel driveway but with a firm base. 2  An asphalt driveway costs about $2 -$5 a square foot, or $1,200 -$3,000 for 12'x50' to $31,000 -$75,000 for a 12' lane a quarter mile long.