Know This Place

3339–3341 21st Street

Mission · San Francisco, CA 94110

  • Built 1900
  • 4-unit apartment building
  • 2 stories
  • Zoned RH-3
  • District 9
  • Historic status: historic resource
37.7566, −122.4220 Street View appears here once a Google Maps embed key is configured.
2,733 sq ftBuilding area
2,850 sq ftLot area
12Rooms · 4 bed, 4 bath

Permit history

  1. Oct 2025

    Expand one unit: down to level 1 storage area create new bedroom and bathrooms. replace non-historic wood garage door with new hinged wood garage door.

    Filed Permit 202510016466 $$$ $40,000
  2. Jan 2025

    Repairing and replacing deck boards and stair treds (less than 50%) in kind work and materials as needed. the deck is 4 1/2' widith and 25' length and runs along the 2/f with stairs leading to the back yard. of the side yard/inside corridor of the building to the rear. work not street visible.

    Complete Permit 202501289233 $$$ $20,000
  3. Dec 2017

    Repair existing stairs deck guardrail. no change in layout or overall dimentions. repairs in kind.

    Complete Permit 201712136380 $$$ $20,000
  4. Jul 2017

    Reroofing.

    Issued Permit 201707061150 $$$ $21,816
  5. Dec 2009

    Comply with nov# 200922605-dry rot repair, less than 50% of the entire deck structure.

    Complete Permit 200912092939 $$$ $10,000
  6. Sep 2004

    Replace exist damaged front exterior stairs leading down frm sidewalk in kind per plan.nov 200452207.

    Complete Permit 200409144038 $$$ $3,000
  7. Sep 2004

    Repair rotten wooden stairs/to comply with nov# 200452207.

    Expired Permit 200409013133 $$$ $500
  8. Aug 2001

    To renew permit#2000/03/31/6009 for final inspection.

    Complete Permit 200108015074 $$$ $1
  9. Mar 2000

    Repair existing two story deck as per/plans, includes replacement of post.

    Expired Permit 200003316009 $$$ $15,000
  10. May 1992

    Legalize space to comply with approved permit & violation notic.

    Complete Permit 9208752 $$$ $2,000
  11. Jan 1992

    Reroofing.

    Expired Permit 9200026 $$$ $4,000
  12. Jul 1987

    Converse 2 units to 1 unit, remove 2 doors, non structural.

    Cancelled Permit 8709870 $$$ $1,000

Not yet documented: the architect and builder and the early residents. Know any of it? Tell us — just describe it in plain words.