This Old House kicks off the second project of their 35th Anniversary Season: an addition to a 1966 Colonial in historic Lexington, Mass. Homeowners Jeremy and Jody Kieval love the neighborhood but they'd like a curb appeal makeover that includes a new farmer's porch. Jeremy loves to cook and wants his dream, so the 45+-year-old kitchen will be gutted and redesigned. Jody laments the lack of mudroom and access to the garage—but all of that will be taken care of by the new addition. All of the new upstairs space goes to the girls: two more bedrooms, a laundry room, and a sitting area over the garage. The lack of insulation needs to be addressed and the heating and cooling systems may not be sized to support all of the new work in the addition. Roger shows Kevin the small stream in the backyard and the lengths that we're going go through to protect it during construction.