When their parents sold their home in Florida to be nearer to family, this Pelham, NH household needed more than a spare room — they needed a home of its own. Oak Hill designed a one-bedroom attached ADU sized and detailed to read as part of the original house and its neighborhood: matching rooflines, siding and window proportions, so the addition settles in rather than announcing itself. A breezeway joins the two, with enough connection for shared dinners and grandkids running back and forth, and enough separation for real privacy on both sides. Below, the addition’s lower level holds an oversized one-car garage and unfinished storage.