Welcome to 956 Portminster Crt in Newmarkets prestigious Stonehaven-Wyndham community, a rare offering with approximately 7,800 sq. ft. of total living space, making it one of the largest homes in the neighborhood. Perfectly situated on a quiet court with a south-facing backyard, this residence is filled with natural light and showcases an elegant design with 9-ft smooth ceilings, formal living and dining rooms with coffered ceilings, a private office, and a spacious open-concept family room. The gourmet kitchen and adjoining dining areas open to a raised deck overlooking the spectacular backyard retreat, where mature trees ensure privacy and multiple entertaining spaces surround the in-ground saltwater pool, creating a true resort-like setting. The fully finished walk-out basement provides direct access to this outdoor oasis and extends the homes functionality with a second kitchen, bedroom with ensuite, theatre, billiard room, and sauna. Upstairs, a unique layout includes a family room retreat and a rare bedroom with its own private staircase and ensuite, perfect for a nanny or multigenerational living, while the luxurious primary suite features a sitting area and a fully renovated spa-inspired ensuite (2024) with freestanding tub, oversized glass shower, and double vanity. Thoughtful upgrades include two new furnaces, a whole-home water softener, LED lighting, and modern finishes throughout. With 3-car garage parking, an extended driveway, proximity to top schools, and an unbeatable blend of elegance, versatility, and a backyard designed for relaxation and entertaining, this home is truly a one-of-a-kind opportunity in one of Newmarkets most desirable communities.