Welcome to 30 Oliver Street, a rare opportunity to own a custom-built 4-bedroom, 4-bath home in the heart of New Castle. Designed by renowned Maugel Destefano Architects and built by Auger Builders, this residence blends timeless craftsmanship with modern coastal style and high-end finishes throughout. The stunning kitchen features cathedral ceilings, a large center island, hidden pantry, designer cabinetry, and top-tier appliances. French doors open to a stone patio, perfect for entertaining. The open living and dining area offers hardwood floors, a gas fireplace, and peaceful water views. A private den provides an ideal home office or quiet retreat. Choose between a first- or second-floor primary suite, both with spa-like baths and spacious walk-in closets. Three additional bedrooms and baths offer plenty of space for family and guests. A large bonus room over the garage adds flexibility for a gym, media room, or guest space. Outside, a spacious barn offers endless possibilities—perfect for a studio, workshop, storage, or car collecting. Just a short stroll to the Piscataqua River, local church, post office, town hall, and coffee shop. Minutes to downtown Portsmouth and the Wentworth by the Sea Resort, 30 Oliver Street offers the best of New Castle living.