BACK ON THE MARKET WITH A BRAND-NEW, STATE-APPROVED SEPTIC SYSTEM! Discover the possibilities at 10 N Mason Road, a charming New Englander set on a level, private 0.80-acre lot in Brookline's desirable Hollis-Brookline School District. Offering four bedrooms, two bathrooms, and a versatile bonus room, this home provides the flexibility today's buyers appreciate. The sun-filled great room features a newer pellet stove and a wood-burning fireplace with electric blowers, creating a welcoming gathering space throughout the seasons. A separate living room with an electric fireplace offers another comfortable place to relax. Two first-floor bedrooms, including one with a private ¾ bath, provide convenient layout options, while two additional bedrooms and a bonus room upstairs offer space for guests, work, hobbies, or storage. Enjoy the inviting farmer's porch, screened porch overlooking the peaceful backyard, and ample off-street parking. Conveniently situated near Milford, Amherst, and the Massachusetts border. The seller temporarily withdrew the property to install a brand-new, state-approved 4 bedroom, pipe and stone septic system - an important improvement now completed. Offered at $489,000. The seller is seeking a flexible closing, and the sale is contingent upon securing suitable replacement housing. Schedule your private showing and discover the possibilities!