Overview: Landscape contractor Roger Cook welcomes certified arborist Matt Foti to Newton Centre to prune all of the existing hemlock trees on the corner of the house, and along the driveway. Inside, master electrician Allen Gallant installs a bath fan in the new powder room that looks like a recessed light, but it has hidden ventilation capabilities built in. Host Kevin O'Connor travels back to Austin, Texas to revisit our first certified green building project—a 1920s bungalow that was expanded to accommodate a family of four. Nearly three years later, the homeowners and their builder report back on how the house is performing. Back in Newton Centre, general contractor Tom Silva shows Kevin how he's roofing the new addition to match the existing house using an architectural asphalt shingle.