Know This Place

4020 20th Street

Castro (Eureka Valley) · San Francisco, CA 94114

  • Built 1912
  • Two-flat
  • 2 stories
  • Zoned RH-1
  • District 8
  • Historic status: unevaluated
37.7582, −122.4309 Street View appears here once a Google Maps embed key is configured.
3,578 sq ftBuilding area
5,697 sq ftLot area
13Rooms · 3 baths

Permit history

  1. May 2026

    Kitchen main floor - replace cabinets, countertops, appliances & sink & fixtures using existing locations & waste supply lines, existing electrical systems & locations. work inkind.

    Complete Permit 202605131206 $$$ $30,000
  2. May 2026

    Garage roof only: reroofing: install 3 layers of certained feed, sa cap system, 1. layer of nail bas, 1 layer of ply bas, 1 layer of sa cap self adhered, no hot work.

    Complete Permit 202605121106 $$$ $3,500
  3. Mar 2026

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

    Complete Permit 202603318604 $$$ $33,000
  4. Nov 2025

    Remodel 1 existing bathroom on 3/f.

    Complete Permit 202511038746 $$$ $42,000
  5. Mar 2002

    Reduction in deck size from 8 to 6 foot.

    Expired Permit 200203060766 $$$ $1
  6. Oct 2001

    Rmdl exist kitchen, bathrms, rplace windows. exterior reduce size of nonconform porch/ rear yard 2nd floor.

    Complete Permit 200110251749 $$$ $23,000
  7. Aug 2001

    Interior remodel on g/fl., new bathroom in existing storage area, kitchen remodel, remove existing softwood fl.

    Complete Permit 200108085609 $$$ $26,000
  8. Jul 2001

    Removing kchn cabnets and wall covering.

    Expired Permit 200107274664 $$$ $5,000
  9. Mar 2000

    Renew expired appl #9913963.

    Complete Permit 200003154460 $$$ $1
  10. Jul 1999

    Remove illegal unit in basement-remove all plumbing.

    Expired Permit 9913963 $$$ $4,000

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