125 Mason Street Apartments are in San Francisco’s Tenderloin Neighborhood at 125 Mason Street, San Francisco, CA 94102. TNDC acquired the building in 2023. The building consists of 81 residential units - 22 one-bedroom units, 34 two-bedroom units, 20 three-bedroom units, and 5 four-bedroom units. The 14-story building offers a ninth-floor terrace, three indoor community rooms, and outdoor ground-level multipurpose space with a children’s play structure. TNDC has partnered with John Stewart to provide property management services at 125 Mason.