Demolition, of a old home on a site is very expensive. After the old home, is torn down you must then take out all other remaining parts of the house, mainly the foundation. To remove the foundation, the contractor must use a rock, hammer, to break it up and then haul away all the remains of the foundation. After the remains have been hauled of the excavation, of the site must be done to prepare for the new home pad,. It generally will also require the old driveway, be rebuilt as well.