Know This Place

4118 20th Street

Castro (Eureka Valley) · San Francisco, CA 94114

  • Built 1905
  • Single-family house
  • 3 stories
  • Zoned RH-1
  • District 8
  • Historic status: unevaluated
37.7580, −122.4330 Street View appears here once a Google Maps embed key is configured.
2,287 sq ftBuilding area
2,450 sq ftLot area
9Rooms · 4 bed, 2 bath

Permit history

  1. Jun 2026

    Patch sheetrock from electrical upgrade. new vanity and medicine cabinet on the 3rd floor bath.

    Issued Permit 202606304316 $$$ $15,000
  2. Jul 2010

    Remodel 2nd fl bdrm to add closet, convert 2nd fl closet to 1/2 bath, remove portion of non structural wall between dining room and kitchen on 2nd fl, room addition on 1st fl to add 1 bedroom, 1 /2 bath and 1 closet. relocate laundry room to garbage area, replace/relocate wh, furnace, rmdl 2nd fl bath.

    Complete Permit 201007227197 $$$ $40,000
  3. Oct 2008

    Replace tub faucet & tile, replace tile floor & ped sink, all work to be like for like.

    Complete Permit 200810164412 $$$ $4,200
  4. Oct 2008

    Replace front windows (7) like for like (double hung) aluminum wood clad.

    Complete Permit 200810164414 $$$ $3,700
  5. Apr 2007

    Reroofing.

    Complete Permit 200704178973 $$$ $8,600
  6. Jun 1997

    Vertical addition.

    Complete Permit 9710336 $$$ $8,000
  7. Jul 1991

    Repair dry rot.

    Complete Permit 9111877 $$$ $3,038
  8. Jul 1988

    Repair base of wall.

    Complete Permit 8809127 $$$ $1,300
  9. May 1988

    Resupport landing at front stairs.

    Expired Permit 8806770 $$$ $450
  10. Aug 1987

    Sash repair/plaster patching/install new kitchen counters.

    Complete Permit 8711323 $$$ $1,500

1 nominal $1 street-space permit is omitted.

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