Know This Place

4521 20th Street

Castro (Eureka Valley) · San Francisco, CA 94114

  • Built 1900
  • Single-family house
  • 3 stories
  • Zoned RH-2
  • District 8
  • Historic status: unevaluated
37.7572, −122.4384 Street View appears here once a Google Maps embed key is configured.
3,800 sq ftBuilding area
2,996 sq ftLot area
11Rooms · 1 bath

Permit history

  1. Sep 2025

    To strengthen and straighten the out of floor walls at the top level of the home.

    Issued Permit 202509034506 $$$ $80,000
  2. Jun 2013

    Repair existing retaining wall, visible from street.

    Issued Permit 201306149626 $$$ $10,000
  3. Feb 2012

    Comply with nov #201172021 dated 11/23/11. remove brick flue, repair siding to match.

    Complete Permit 201202013382 $$$ $5,000
  4. Jan 2012

    Backfill and soil nails related to retaining wall repair on address 4515 20th st. see permit application number 2011-1215-0719.

    Complete Permit 201201122117 $$$ $5,000
  5. Mar 2011

    To comply with nov emergency temp repair; provide protection covering.

    Complete Permit 201103212483 $$$ $5,000
  6. Aug 1992

    Horizontal addition.

    Complete Permit 9213175 $$$ $200
  7. May 1990

    Remove rotting deck over 1/f kitchen and pantry.

    Cancelled Permit 9009224 $$$ $1,500
  8. Oct 1989

    Remove asbestos shingles and replace wooden shingles.

    Complete Permit 8918760 $$$ $4,000

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