10. Prefab foundations are a great base to build on
The show first used a factory-made preformed concrete foundation system in 1994 when adding onto a 1710 Colonial in Acton. Tom Silva noted the numerous advantages of having this labor-intensive component built off-site: "No mud, no mess, no concrete truck. Send your plans out to the manufacturer and the factory precasts all the pieces, ships them to the job site, and swings them into place. In one day you're ready to start building an addition or a whole new house."