Homeowners John Stone and Sally Peterson want to turn an 1887 Victorian-era two family house in Cambridge, Massachusetts, into a one-family home. Landscape contractor Roger Cook finds a few surprises in the yard, plumbing and heating expert Richard Trethewey uses an eye-opening energy audit to demonstrate the need for efficiency upgrades, and general contractor Tom Silva brings in a deconstruction expert to remove all of the old and unneeded house parts.