just an opinion - estimate the human hours, equipment cost, transportation, and fuel.
pay close attention to what you are moving especially a manufacturing facility- which may have specialized machinery and equipment. If you charge by sf, you will loose your hat by removing/un-installing a diecasting machine for example...this may take 3-4 hours depending on the machine and may require a technical/engineering company because it may have hazardous chemicals.
food for thought.
Jul 10, 2009