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3936 21st Street

Castro (Eureka Valley) · San Francisco, CA 94114

  • Built 1929
  • Single-family house
  • 2 stories
  • Zoned RH-2
  • District 8
  • Historic status: unevaluated
37.7563, −122.4353 Street View appears here once a Google Maps embed key is configured.
2,712 sq ftBuilding area
2,548 sq ftLot area
6Rooms · 2 baths

Permit history

  1. Jun 2026

    Interior remodel converting on habitable 1st fl space into habitable spaces inlculding a bath, media, study, gym, and wine room. new window being installed on rear facade. the existing buildings gross floor area is not being modified. 836 sq ft of prev e occupied floor is being renovated.

    Issued Permit 202606253888 $$$ $100,000
  2. May 2025

    Ground fl: rebuild stair 2nd fl: remodel kitchen, relocate bath, infill light court, upgrade stairs to 1st fl, modify existing rear roof deck. 3rd fl: remodel master bath & bath, infill light court. replace & upgrade windows.

    Complete Permit 202505166697 $$$ $220,000
  3. Sep 2024

    Remodel & addition to existing 4, 105.6 sq ft 3-story, single family residence with attached 1-car garage, convertexisting non-habitable space @ 1/f to 801.1 sq ft conditioned space for adu, new roof deck with retractable skylight, remodel of decks @ 2/f & 3/f & interior remodel throughout also part of scope of work.

    Withdrawn Permit 202409050095 $$$ $300,000
  4. Jul 2024

    Remodel & ddition to an existing 4, 105.6 sq ft three story sfd with attached 1 car garage.converting existing non-habitable space @ 1st fl to 801.1 sq ft conditioned space for accessory dwelling unit.new roof deck with retractable skylight, remodel of decks @ 2nd & 3rd fls.

    Cancelled Permit 202407226975 $$$ $300,000
  5. Feb 2024

    Kitchen and bathroom renovation. kitchen - new floor, new counter top, new cabinets. bathroom - new tiles, new vanities, non structural.

    Cancelled Permit 202402206164 $$$ $50,000
  6. Apr 1999

    Replace front steps with new, no change in configuration.

    Expired Permit 9906239 $$$ $7,000

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.