Plot: Mary-Van and Jim Sinek discuss expanding their side-by-side, two-family Lexington home with a new addition, which will double the existing square-footage of one unit and include a new master bedroom and bathroom, enlarged and efficient kitchen with adjacent breakfast room / dining room for family reunions and the bed-and-breakfast operation a spacious family room, two outdoor decks: one for family use, the other for b-and-b guests; and an attached two-car garage. Our host visits a local bed and breakfast for a behind-the-scenes look at how it's done