When you build a new office building from the ground up, you have plenty of decisions to make. You have to determine the size of the building, the facilities that you’ll need, and the colors and design features. You also need to determine whether you want a concrete or an asphalt parking lot. Asphalt is the most cost-effective option, but it needs to be paved and patched frequently. Concrete costs about twice as much as asphalt, but it also lasts twice as long.