Mid-century legal duplex in Central San Mateo, built in 1950 and held by the same family ever since more than 75 years now delivered with both units vacant. Nearly 3,400 square feet of total living space across two units on a 7,630-square-foot lot: a 4-bedroom, 2-bathroom unit and a 3-bedroom, 1-bathroom unit, plus an attached 2-car garage. Because both units are vacant at close, a buyer can move into one and set their own terms on the other a layout that works for multigenerational households, extended family, adult children, or offsetting a Peninsula mortgage with rental income. Both units are original and well cared for, with mid-century proportions and detail intact and clear upside for a buyer who wants to update over time. Walking distance to downtown San Mateo B Street restaurants, shops, Central Park, and the San Mateo Caltrain station, with service north to San Francisco and south to San Jose. Legal duplexes on lots this size rarely trade in Central San Mateo, and vacant ones almost never do. Easy access to Highway 101 puts both the San Francisco and Silicon Valley job corridors within reach. Available for the first time in over 75 years in San Mateo