Back at the Cambridge 2012 project, the deconstruction continues with the removal of the central chimney that is in the way of the new kitchen. The crew removes it by hand, brick by brick, so they can reuse it on another job. Host Kevin O'Connor visits deconstruction expert John Grossman at his "eco" resale store in Springfield, MA. He has tripled the size of his operation since our last job together, mostly due to increased awareness and affordability of his services. Landscape contractor Roger Cook welcomes back arborist Jack Kelly to remove the sick Norway maple that, left untouched, would come down on its own one day soon. His crew makes quick work of it with bucket trucks, tag lines, chainsaws and chippers. With the inside of the house opened up, architects Marcus Gleysteen and Robyn Bell show Kevin the plan for the new space via a 3-D computer model, then the visit a house down the street with homeowner Sally Peterson to see the design ideas that first caught Sally's eye.