Welcome to 18522 Madison Ave—a stunning, fully updated single-family retreat nestled on a private road in one of Castro Valley’s most coveted neighborhoods. This 4-bedroom, 3.5-bath residence offers 2,900 sq ft of sophisticated living space, combining luxury, comfort, and functionality in one beautiful package. Step inside to a light-filled, open-concept layout featuring a remodeled chef’s kitchen with high-end stainless steel appliances, custom cabinetry, and elegant quartz countertops—perfect for entertaining or everyday living. The expansive living and dining areas flow seamlessly to the outdoor space, where you’ll find a resort-style pool ideal for relaxing or hosting guests. Upstairs, the spacious primary suite offers a spa-inspired bath and serene views, while downstairs features a fully separate unit—perfect for extended family, guests, or rental income. Tucked away on a quiet, private road in a top-rated school district, this home provides the peace and privacy of suburban living with easy access to freeways, BART, shopping, and dining. Don’t miss the opportunity to own this rare Castro Valley gem—luxury, privacy, and space in an unbeatable location. Schedule your private tour today.