3320 21st Street, Mission

The building

City records date the two-story small apartment building at 3320 21st Street to 1900. The city's roll counts four units here. Planning's records identify the property as a historic resource within the Liberty Hill Historic District. On the Assessor roll, the building area comes to 4,215 square feet. City permit records show work completed here as recently as 2002. On a lot of 3,759 square feet, the parcel falls in RH-3, a three-family residential district. Planning maps the parcel in the 40-X height and bulk district.

Getting around

The address sits on the 21st Street block between Valencia and Guerrero. Muni stops at Mission and 20th and at Mission and 22nd are the closest, both about a five-minute walk away. The edge of Mission Dolores Park is about a seven-minute walk away. Nearer at hand, Mission Playground is about a four-minute walk away.

Mission District

The Mission District is one of San Francisco's oldest neighborhoods, with Valencia Street, Mission Street, and Dolores Park as everyday landmarks.

Source: City and County of San Francisco, Assessor-Recorder (2025 roll), Planning, Building Inspection, Public Works, SFMTA, and Recreation and Parks records via DataSF, retrieved October 31, 2026. Walking times are estimates.