423–431 Union Street

1. 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
2. May 1989

   Removal of concrete topping slab over the wood deck.

   Complete Permit 8907906 $$$ $3,100
3. Jan 1993

   Termite repair.

   Complete Permit 9300757 $$$ $3,800
4. Jul 1994

   Reroofing.

   Complete Permit 9411530 $$$ $5,000
5. May 1996

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

   Complete Permit 9607607 $$$ $4,700
6. Sep 2017

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

   Complete Permit 201709158395 $$$ $60,000
7. Jun 2020

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

   Complete Permit 202006038102 $$$ $14,101
8. Nov 2020

   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.

   Complete Permit 202011259745 $$$ $300,000
9. Nov 2023

   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.

   Complete Permit 202311281438 $$$ $27,945
10. Jun 2024

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

    Complete Permit 202406053822 $$$ $23,900

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