In 2006, CEE PI, Ben Weil, his wife Lisa, and their 1-year-old daughter moved into the oldest, coldest, and least energy efficient house in Leeds, MA. By 2018 it is probably the most energy efficient and comfortable house in the village. The deep energy retrofit was done in phases over a decade, with the help of carpenters and other creative and dedicated craftsmen and tradespeople who are leaders in the green building movement in the western Massachusetts. Join Western Mass Green Consortium for a presentation sharing this journey, mistakes, successes, and lessons learned.