Welcome to 320 Villa Terrace, a rare opportunity to own a historic 1907 triplex with a bonus studio in the heart of San Mateo. This beautifully maintained property offers 3,880 sqft of living space on a 7,500 sqft lot. It includes two 1BD/1BA units, one 2BD/1BA unit, and a non-conforming basement studio ideal for added rental income or flexible use. Unit #1 features a bright living room, two spacious bedrooms with hardwood floors, and updated kitchen & bathroom. Unit #2 offers a sunny living room with fireplace, updated kitchen & bath, and newer appliances. Unit #3 includes a cozy bedroom, large eat-in kitchen, and bonus office/living space. Each unit comes with its own attached one-car garage. The property also features a shared laundry area, ample storage, and a full basement. The expansive backyard offers potential for an ADU - buyers to verify with the City of San Mateo. Conveniently located between Burlingame and Downtown San Mateo, it's minutes to shopping, dining, the Japanese Tea Garden, Coyote Point, and San Mateo Arboretum. A perfect blend of historic charm, central location, and rental upside. 320 Villa Terrace is a true San Mateo gem!