Welcome to 17209 Sandy Knoll Drive - A Beautiful Home in the Heart of Cashell Manor!  Nestled in the highly sought-after Cashell Manor community of Olney, this charming 4-bedroom, 2-full and 2-half bath colonial offers the perfect blend of space, comfort, and classic style. Set on a peaceful, tree-lined street, the home sits on a generous 0.31-acre lot in a cul-de-sac with beautiful mature landscaping and great curb appeal.  Step inside to find a bright, inviting floor plan featuring hardwood floors, a spacious living room, and a formal dining area perfect for entertaining and easy access to the deck - ideal for relaxing or hosting memorable gatherings.  Enjoy the cozy family room with a huge double window looking out to the front yard and a wood-burning fireplace.  Upstairs, the primary suite offers ample closet space and a private bath, while three additional bedrooms provide plenty of room for family, guests, or a home office. The finished lower level adds versatility, with space for a recreation room, gym, or media area, along with extra storage.  Outside, enjoy a large deck that spans almost the entire back of the home and a backyard that's perfect for play, pets, or gardening. The home also includes a two-car garage and is part of an established neighborhood.  Located within minutes of schools, local parks, and Olney's popular shopping and dining destinations, this home combines suburban tranquility with everyday convenience.