2FOUNDATION: The foundation is a critical element of the building process, and it must be done correctly to prevent problems further down the road. Your lot needs to be cleared and adjusted (i.e. fill dirt brought in, leveling, etc.) to prepare the space for your new home. Next, form boards will be put up which serve as a mold for the foundation. After plumbing lines are put in place, the foundation is poured and you'll be able to see your home's footprint.