37.8006, −122.4065 A locator map appears here once a Mapbox token is configured.
Know This Place

District 3 · Block 0115, Lot 054 · ZIP 94133

423–431 Union Street

6-unit building with a ground-floor store

  • 3 stories
  • 6,355 ft2
  • 2,906.25 ft2 lot area
  • 28 rooms
  • 5 bathrooms
  • Wood frame
  • Zoned RH-3
  • Sold March 30, 2017
37.8006, −122.4065 Street View appears here once a Google Maps embed key is configured.
  1. 1906

    Built.

  2. October 3, 1906

    A builder contracted to put up a three-storey and basement frame building, at $3,505.

    The San Francisco Call, 3 October 1906, p. 15
  3. 1934

    Mona's, the city's first lesbian establishment operated here between 1934 and 1935, one of the North Beach bars and restaurants the city's survey identifies as significant in San Francisco's LGBTQ history.

    North Beach Historic Context Statement, adopted 2022
  4. 1934

    Mona's, the city's first lesbian bar, opened here in 1934 as a hangout for artists and writers and moved on the following year.

    Damon Scott for the Friends of 1800, Sexing the City: The Development of Sexual Identity Based Subcultures in San Francisco, 1933–1979, historic context statement, San Francisco Planning Department, adopted 2004
  5. May 1989
    Permit 8907906 $$$ $3,100

    Removal of concrete topping slab over the wood deck.

  6. Jan 1993
    Permit 9300757 $$$ $3,800

    Termite repair.

  7. Jul 1994
    Permit 9411530 $$$ $5,000

    Reroofing.

  8. May 1996
    Permit 9607607 $$$ $4,700

    Proposed alteration to existingbasement, new post & new post ftg.

  9. Sep 2017
    Permit 201709158395 $$$ $60,000

    Soft story retrofit per sfebc chapter 4d, engineering criteria: 2016 cebc appendix a-4. reference permit application 202006038102 for upgrade in commercial.

  10. Jun 2020
    Permit 202006038102 $$$ $14,101

    Ada upgrade @ 1st fl existing retail space. reference soft story upgrade permit application 2017-0915-8395.

  11. Nov 2020
    Permit 202011259745 $$$ $300,000

    The proposed project is to remove and replace the non permitted units with 2 new residential adus, and to additionally convert the commercial space into a new 3rd residential adu for a new total of 8 residential units.

  12. Nov 2023
    Permit 202311281438 $$$ $27,945

    Install new fire sprinkler system per nfpa13 at basement floor and new adu at first floor including 2" dedicated fire service underground per nfpa 24 (total sprinklers 45). ref 202011259745.

  13. Jun 2024
    Permit 202406053822 $$$ $23,900

    Upgrade existing fire alarm system to comply with sffc section 1103.7.6.1.

1 nominal $1 street-space or sidewalk permit is omitted from the timeline.

Nearby