Tucked away in one of the most desirable districts of San Francisco. Sandwiched in between North Beach & Russian Hill, this mixed use corner property is a once in a lifetime opportunity to own a piece of San Francisco. This Edwardian Style building features three residential units and commercial storefront (1801 Mason Street). The top two units are identical large 6 room flats with spacious eat-in kitchen, split bath, double parlor living room, and formal dining room, that could be used as three bedrooms. South-facing windows allow abundant natural light and elegant period details include: high coved ceilings, gorgeous wood trim, inlaid hardwood floors, French pocket doors, and distinctive circular bay window. Newer roof, newer roof deck, upgraded electrical, and interior of 810 Union has been remodeled w/ in unit laundry. Full basement with height clearance for future development. Awesome rooftop views of downtown skyline, Coit Tower, St Peter & Paul, Alcatraz, and the Bay. The iconic San Francisco Cable Car runs along side Mason St & Union St. Walking distance to Washington Park, Chinatown, restaurants in North Beach, famous "Crookedest Street", Fisherman's Wharf & so much more.