For the first time in nearly five decades, this cherished home debuts on the market. Privately set on over an acre, 43 Greatstone Drive offers space, comfort, & timeless appeal in one of Merrimack's desirable neighborhoods. Stepping inside, you'll find pristine hardwood floors throughout, a spacious kitchen with a built-in hutch & a slider leading to the enclosed porch, a large family room with a gas fireplace, a formal living & dining room, & an expansive great room ideal for entertaining & family gatherings. A laundry room & half bath complete the first floor. The second level offers four generously sized bedrooms, including a primary suite with a private bath featuring a walk-in shower and double closets and a full bathroom. Additional highlights include central air conditioning, an on-demand generator, a full basement offering excellent storage or future finishing potential, a heated workshop, two-car garage, and a large shed. The expansive yard is perfect for hosting barbecues, outdoor entertaining, and enjoying the warmer days ahead. Lovingly maintained by its original owners, this is a rare opportunity to own a home that has been filled with decades of memories and is ready for its next chapter.