Know This Place

3808 21st Street

Castro (Eureka Valley) · San Francisco, CA 94114

  • Built 1907
  • Single-family house
  • 2 stories
  • Zoned RH-2
  • District 8
  • Historic status: unevaluated
37.7563, −122.4326 Street View appears here once a Google Maps embed key is configured.
1,784 sq ftBuilding area
1,912 sq ftLot area
6Rooms · 1 bath

Permit history

  1. Aug 2025

    Reroofing: remove and replace roofing material / existing roofing material (in-kind).

    Complete Permit 202508153198 $$$ $14,000
  2. Feb 2024

    Change in material. tile to be placed over existing front concrete entry staircase inkind replacement.

    Cancelled Permit 202402166101 $$$ $3,500
  3. Jan 2017

    Revision to building app#2016-06-13-9729. basement: relocate bath, mechanical room and wine room. 1st floor: reconfigure bedroom suite. 2nd floor: relocate kitchen, remove window @ entry. rear elevation: reconfigure windows at 1st floor. struct-replace moment frames with shear walls.

    Cancelled Permit 201701207524 $$$ $12,000
  4. Sep 2016

    Shoring & excavation for remodel ref pa 2015-1116-2744.

    Cancelled Permit 201609238638 $$$ $10,000
  5. Jun 2016

    Changes per boa decision. relocate dormer, reconfigure windows @ rear elevation. ref bpa201511162744.

    Cancelled Permit 201606139729 $$$ $1
  6. Nov 2015

    Add basement, garage @ 1st floor & room @ attic. basement to have family room & bath; 2nd floor - living, dining, kitchen. 3rd floor-3 bedrooms, 2 baths, new 4th floor - family room, 1/2 bath roof deck replace entry stairs. install sprinkler system. 2 new dormers.

    Cancelled Permit 201511162744 $$$ $650,000
  7. Apr 1998

    Reroofing.

    Expired Permit 9806415 $$$ $11,423

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