Discover exceptional coastal living in sought-after, low-tax New Castle, NH. Situated on a beautifully landscaped 0.64-acre lot, this 5-bedroom, 6-bath luxury home offers 4,740 square feet above grade, plus 1,498 square feet of finished lower-level space, totaling approximately 6,238 square feet. Designed for entertaining and everyday comfort, the home features a dramatic living room with soaring 15+ foot ceilings and a chef's kitchen with side-by-side full-size Sub-Zero refrigerator and freezer, Wolf 6-burner range with griddle, and wet bar. The luxurious primary suite includes dual walk-in closets and a spa-inspired bath with soaking tub and dual-head shower. A first-floor office and expansive finished third floor offer flexible living space. The finished lower level features a custom Irish bar, wine room, beverage coolers, media room, home gym, oversized sauna, and recently renovated three-quarter bath. Outdoors, a private in-ground pool creates a resort-inspired setting for summer entertaining, complemented by a three-car garage. The location is equally impressive. Walk to Great Island Common, a 32-acre seaside park with sandy beaches, green space, picnic areas, playgrounds, and views of Whaleback Lighthouse. Fort Stark State Historic Park is also within walking distance, offering coastal scenery and opportunities to launch kayaks and paddleboards. The historic Wentworth by the Sea Hotel and Wentworth Marina are within walking distance, while downtown Portsmouth's restaurants, shops, and cultural attractions are just a short drive away. With exceptional amenities and walkable access to beaches, parks, and waterfront destinations, this New Castle luxury home offers the best of New Hampshire Seacoast living.