The mission of St. Mark's Square is to provide affordable housing and intergenerational, interfaith services and programs to families in San Francisco. St. Mark's Square is a ministry of St. Mark's Lutheran Church San Francisco and also manages Martin Luther Tower Senior Apartments, an affordable housing tower built in 1960. St. Mark's Square is also developing Ella Rohlff's place, 104-units of housing for Low & Very Low-Income Seniors, set to deliver in 2026.