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The size of your driveway apron will vary based on your town's building codes. On average, they range between 12 and 24 feet wide and eight to 15 feet long. One end of the apron usually matches the width of the driveway—10 to 12 feet wide for a single-car driveway—while the street end flares out to allow cars to turn in and out.

Concrete should be at least 4 inches thick for steps. This thickness boosts stability and prevents cracking and deterioration. After you’ve built your forms out of wood, fill the void with a sand or gravel base for concrete. Use an all-purpose concrete mix to form your steps. After pouring your concrete steps, be sure to screed and float the concrete. 

Concrete contractors typically charge anywhere from $6 to $14 per square foot. Cost factors include job size, site prep, base material, accessibility, your location, concrete finish, and concrete thickness. Removal of existing concrete, asphalt, deck, pavers, and grass will cost anywhere from $1 to $6 per square foot. Homeowners can often save money by removing and disposing of existing pavers, decks, and grass. Breaking up and hauling away concrete and asphalt is difficult and time-consuming without the proper equipment and may be worth having the pros do that work.

Whether a concrete walkway or sidewalk needs rebar depends on how it will be used. Walkways and sidewalks meant for light foot traffic don’t need rebar, and you can use wire mesh instead. But concrete surfaces that will see heavy machinery will likely need it.