A HISTORIC home that once served as a trading post — and was allegedly visited by George Washington — has hit the market for $1.25 million. The home, located at 1 Shingle House Road in the Westchester County hamlet of Millwood, NY, about 30 miles north of Manhattan, dates back about 1750, before the American Revolution. It features four bedrooms thanks to a modern addition. Details include a formal dining room, two woodburning fireplaces and a large chef’s kitchen connects to a family room with a gas fireplace. There’s also a home office/gym, French doors that open to a stone patio with a stone wall enclosure and a detached two-car garage with a 220-volt charger for an electric car. The property, on three-quarters of an acre, includes room for a pool. The current owners bought the house in 1990 for $370,000. They have since restored it and doubled its size, all while raising their children here. The house is within the well-regarded Chappequa school district. Now empty nesters, the couple plans on moving full-time to their second home in the Berkshires. The listing brokers are Maya Sheehan and Natalia Wixom, of Compass.