Welcome to 51 Portland Street, a beautifully preserved 1861 New Englander that offers the rare combination of historic character, thoughtful modern updates, and genuine income potential. This is a home that tells a story while giving you everything you need for comfortable, flexible living today. The main residence features 3 bedrooms and 2 baths across a warm, well proportioned layout. Formal living and dining rooms are anchored by a cozy fireplace and original built-ins, showcasing the craftsmanship of a bygone era. The eat-in kitchen flows easily into a versatile office/den, and a first-floor laundry adds everyday convenience. Recent upgrades include a 200-amp electrical system, giving today's buyers modern peace of mind alongside the home's timeless charm. What truly sets this property apart is the completely finished, recently updated in-law apartment. Accessed through its own private rear entrance, this fully-equipped unit includes a kitchenette, full bath, bedroom, and living room, move-in ready for rental income, extended family, or a private guest suite. It also connects internally to the main house, giving buyers the flexibility to use it as additional living space when needed. Outside, enjoy a generous 0.55-acre village lot with 122 feet of road frontage, an attached one-car garage, and a separate workshop which is heated with it's own pellet stove, perfect for winter hobbies, storage, or a home-based business. Solid wood-frame construction with clapboard exterior and a durable metal roof reflect a home built to last, and now updated to match. Ideally situated within walking distance of downtown Lancaster's shops, restaurants, and community amenities, and served by the White Mountain Regional School District, this property offers small-town charm with everyday convenience. Whether you're drawn to the historic details, the income-generating apartment, or simply the move-in-ready condition, 51 Portland Street is a rare find in today's market.