Perched above the shores of Penobscot Bay in Northport, this exceptional waterfront estate blends privacy, craftsmanship, and coastal beauty in one remarkable setting. Just minutes from Belfast, yet surrounded by mature woods and landscaped grounds, the property features expansive lawn space, established plantings, and steps leading down to 275' of shoreline. The main residence features over 3,600 square feet of finished living space, plus an additional 946 square feet in the finished walk-out basement complete with a home gym, family room, and full bathroom. Expansive windows throughout the home capture bay views while filling the interior with natural light. Rich custom wood finishes, wood floors, and a grand open staircase create warmth and character throughout. At the heart of the home is a beautifully designed custom kitchen that flows into inviting gathering spaces, including a dining room centered around a wood-burning stove and a library area with built-in bookshelves. A screened porch off the living room provides the perfect place to relax and enjoy the peaceful waterfront surroundings. The home includes a spacious first-floor primary ensuite, a dedicated full bath off the library, and three additional bedrooms upstairs, one of which opens to a private deck overlooking the bay. The third floor features a dedicated office space with custom built-ins and a water view. Adding to the property's versatility is a detached guest house with separate heat and utilities. The guest house features a galley kitchen, open floor plan, utility/laundry room, and expansive studio-style bedroom space upstairs with three bathrooms throughout. Both the main home and guest house have an established rental history. Additional improvements include a large detached garage with vehicle storage on either end, along with a separate detached two-car garage providing ample room for vehicles, storage, or hobbies.