Rare & Exceptional Niles Estate with Fully Permitted ADU. An incredible value in the heart of Niles, this rare estate offers the perfect blend of timeless architecture, refined craftsmanship, and true multi-generational living. The stunning Cape Cod residence with elegant carriage-house influences showcases enduring character and quality throughout. The main home offers approximately 1,750 sq. ft. with 3 bedrooms and 2 baths, including a bedroom and full bath on the main level. Vintage charm abounds, highlighted by beautiful built-in cabinetry in the formal dining room. The property is situated on a picturesque 1/4 lot surrounded by classic white picket fencing and includes a 2-car garage. Complementing the property is a fully permitted 900 sq. ft. accessory dwelling unit, built in 2009. This beautifully designed 2-bedroom, 2-bath apartment features vaulted ceilings, a bedroom and full bath on the main level, and enjoys a private setting above its own attached single-car garage. With a separate address and individually metered utilities, the ADU offers exceptional flexibility for extended family, guests, or valuable rental income potential. Just one block away, enjoy all that historic downtown Niles has to offer, including antique shops, restaurants, cozy cafés, a weekly farmers market, and popular community events such as classic car shows, parades, and the renowned Niles Antique Faire. Outdoor enthusiasts will appreciate nearby access to Alameda Creek hiking and biking trails, while the scenic Niles Canyon Railway provides memorable excursions through one of the Bay Area's most beautiful landscapes. A truly special opportunity to own a distinctive property offering charm, versatility, and an unbeatable location in one of Fremont's most cherished historic neighborhoods.