Private Residence, Harwichport, MA This one story addition takes advantage of oceanfront property in Harwichport. While it is largely hidden by older portions of this historic house, it opens up dramatically to encompass the views of the ocean in the rear and make the most of the cape light. The addition weaves together several older structures with floor levels that vary as much as three feet, connecting the main house to the home office and guest house. Inside is a new kitchen, family room, breakfast nook, and gallery. A large roof deck sits directly off the master bedroom and the library of the home office.