31 Rio Vista Dr In Alpine's most coveted enclave, where prestige meets perfection, 31 Rio Vista Drive rises as a rare statement of architectural artistry and uncompromising luxury. Set on two manicured acres behind stately gates, this 2017-built estate spans nearly 21, 000 sq ft and commands attention with a dramatic bridge marble staircase, custom wood floors, and heated marble underfoot. From the private elevator connecting the basement to the roof deck, to the state-of-the-art custom kitchen, every element is meticulously crafted. Venetian plaster walls add timeless texture, while nine fireplaces, custom closets, and spa - inspired baths offer unmatched comfort. More than nine A/C units and solar panels ensure modern efficiency without sacrificing elegance.