A Coastal Legacy, Reimagined. Set along one of Duxbury's most storied corridors, 535 Washington Street is a grand Federal-style residence built in the early 19th century that once served as the meeting hall of the Independent Order of Odd Fellows - a fraternal society devoted to fellowship, charity, and community for over a century. That legacy of gathering and grandeur lives on today in a home built for living large, with rare bay-view scale you simply won't find in a typical build. Soaring 17' ceilings and walls of windows frame sweeping views toward Duxbury Bay, while original architectural character - wide-plank hardwood floors, intricately carved woodwork and multiple fireplaces - has been carefully preserved throughout. The first-floor Great Room (40x60) is a true showstopper for entertaining, anchored by a caterer's kitchen, with flexible space nearby suited to a home gym, studio or au pair/guest suite complete with 1.5 baths. Upstairs, an expansive living area with original curved tin ceilings and a fireplace - a nod to the building's days as a hall for grand social gatherings - opens to a second kitchen with sweeping bay views, ideal for multi-generational living or simply spreading out. The primary suite offers a private deck and two walk-in closets. An elevator and a rare 5-car garage add everyday convenience across 8,560+- square feet of living space. Set between Snug Harbor and the Bluefish River, the home sits minutes from six-mile Duxbury Beach via the iconic Powder Point Bridge, access to the bustling harbor front and dining at the iconic Winsor House and Raw Bar at Island Creek Oyster Farm. The Maritime School and Duxbury's top-rated public schools are all close by, with Kingston Station offering MBTA commuter rail access to Boston, roughly 35 miles north. This is a rare opportunity to own a piece of Duxbury's architectural and civic history, reimagined for modern coastal living - a home where fellowship, philanthropy and timeless New England elegance still echo through every room. For the buyer who craves a truly unique home, this one won't come again. Private showings by request.