NOW 100% OCCUPIED! 4-unit mixed-use investment property in the heart of the Mission District, with Partially completed ADU. 3173-3173A 21st Street is a 4-unit property featuring 3 residential apartments: two (2) 1-bedroom units and one (1) spacious 4-bedroom, 2 bath unit—alongside an ADA compliant ground-floor barber shop in the commercial space. A shovel ready / roughed-out ADU, with planning department approval on the ground floor awaits finishing by a future owner, offering additional income potential once completed. With the existing units brought up to market rents and the ADU finished, there is approximately 60% upside in the current rent roll. With new 400 amp electrical service, and SEPARATELY METERED FOR WATER,, the property benefits from extremely efficient operating expenses making this an attractive opportunity for an investor seeking both stable income and growth potential.