A rare opportunity in Fontana with an attached 2-bedroom ADU! Welcome to 16218 Montgomery Avenue, a unique Fontana property offering an impressive combination of space, flexibility, parking, and multi-generational living potential. The main residence features 3 bedrooms and 2 bathrooms. Step inside the main home and you'll find a comfortable and functional floor plan with spacious living areas and rich dark-toned hard-surface flooring that contrasts beautifully with the bright, neutral walls. The three bedrooms provide plenty of flexibility for family, guests, a home office, or additional workspace, while two bathrooms make the main residence practical for everyday living. The main kitchen offers an abundance of cabinetry and storage, generous countertop space, stainless-steel appliances, recessed lighting, and a large peninsula with additional seating. Its open design connects naturally with the surrounding living and dining areas, creating a comfortable space for entertaining, family dinners, or simply relaxing at home. The amount of cabinetry throughout the kitchen provides excellent storage for cookware, pantry items, and everyday necessities. One of the property's standout features is the attached additional living area. This space is currently configured with 2 bedrooms and 1 bathroom and includes something especially valuable-its own kitchen and dedicated washer and dryer. This provides a tremendous amount of flexibility and endless Opportunities. Outside, this property offers an abundance of parking and valuable side access, providing additional room for multiple vehicles. Whether you have a larger household, work vehicles, recreational toys, or simply want extra space when friends and family visit, the parking configuration is a major advantage. Location is another major benefit. The home provides convenient access to the 210 Fwy & 10 Fwy, Shopping, restaurants, grocery stores, and everyday necessities can also be found throughout the nearby Foothill Boulevard and surrounding commercial corridors.