510–520 Frederick Street

1. 1907

   Built.

2. August 11, 1964

   Photographed.

   San Francisco Subjects Photograph Collection (SFP 162), San Francisco Public Library
3. January 1967

   The Diggers' second Free Store opened here in January 1967.

   Donna Graves for San Francisco Heritage, Citywide Historic Context Statement for Counterculture (1965–1975), San Francisco Planning Department, adopted 17 July 2024
4. Jun 1982

   Building use: apt.

   Complete Permit 8205062 $$$ $350
5. Oct 1994

   Repair fire damaged one unit, reglaze windows. rep. floorbrd.

   Complete Permit 9417657 $$$ $25,000
6. May 2000

   One stop (mt)install one antenna on outside of parapet.

   Complete Permit 200005150020 $$$ $40,000
7. Nov 2001

   Fire damage repair- fire inspection.

   Complete Permit 200111294192 $$$ $1
8. Dec 2001

   Installation of 3 antennas + g p s antenna: (2) panel antennas to be mounted onto outside wall of ex.

   Issued Permit 200112215819 $$$ $45,000
9. Feb 2002

   Street space.

   Issued Permit M19000 $$$ $500,000
10. Jun 2002

    On 1st floor, remove water damaged (firemen) suspened ceiling, repair & reinstall. patch damaged gyp.b.

    Complete Permit 200206078523 $$$ $71,740
11. Jun 2002

    Fire sprinker system exclude commercial space.

    Complete Permit 200206259874 $$$ $27,800
12. Oct 2002

    Install fire alarm system with panel, announciator, bell, smoke detectors, pull station, horn/strobes.

    Complete Permit 200210219483 $$$ $70,000
13. May 2004

    Remofdel existing nail salon- rmove raised floor for disable access.

    Expired Permit 200405244697 $$$ $20,000
14. Jan 2006

    Accessory use wireless site - consists of 1 antenna & 2 equipment cabinets.

    Complete Permit 200601273239 $$$ $25,000
15. Mar 2007

    Install wireless antennas on roof of building and radio equipment in basemnt. equipment includes batteries.

    Cancelled Permit 200703196569 $$$ $15,000
16. Sep 2007

    Replace storefront windows and doors. repair dry rot, install new tiles at 1st floor facad and at entries to the stores at bottom and stucco above.

    Complete Permit 200709112295 $$$ $75,000
17. Nov 2009

    Modification in design per case 20060797c. installation of 1 equipment rack in existing sprint shelter in basement. 3 rf panel antennas on penthouse on roof and 1 gps antenna.

    Complete Permit 200911131228 $$$ $45,000
18. May 2012

    Remove 3 sprint antennas, install 3 new panel antennas on roof top. remove 2 equipment cabinets & install 2 new cabinets in existing lease area in the basement.

    Complete Permit 201205311625 $$$ $45,000
19. Nov 2012

    Dry rot repair and foundation repair at east side of building, work is only at 1st floor and basement. stucco replacement at facade as required to per form dry rot repair.

    Issued Permit 201211093928 $$$ $20,000
20. May 2014

    Existing t-mobile micro wireless facility - replace existing equipment cabinet with new cabinet.remove 3 existing cabinets. add 1 cabinet & gps antenna.

    Complete Permit 201405135605 $$$ $20,000
21. Oct 2018

    Swap out equipment.

    Complete Permit 201810102822 $$$ $20,000
22. Nov 2018

    Compliance with mandatory soft story retrofit program, cebc 2016 app a4 & sfebc 2016 chp 4d. residential complies with #201803560.

    Complete Permit 201811196285 $$$ $25,000
23. Nov 2018

    Compliance with mandatory soft story retrofit program, cebc 2016 app a4 & sfebc 2016 chp 4d. commercial complies with #201803560 ces.

    Complete Permit 201811196283 $$$ $75,000
24. Sep 2020

    T-mobile remove & install 3 antennas & radios, xmu & other equipments.

    Complete Permit 202009234793 $$$ $25,000
25. Aug 2022

    Sprint has contracted velex to remove existing equipment, including electrical connections, off the exiting rooftop telecommunications site. repair/patch all finishes in kind.

    Issued Permit 202208261366 $$$ $12,000
26. Aug 2022

    Dish wireless propose to install 3 antennas, 1 persector, (6) rru's (2 per sector) (3) antenna mounts and an euipment cabinet on the rooftop. install (1) sector at three locations on roof both power and fiber lines will be placed in new cable tray on rooftop.

    Issued Permit 202208301540 $$$ $68,000
27. Apr 2023

    Revision to permit application 202208301540, revision to as-built structural correction needed.

    Issued Permit 202304075274 $$$ $38,000
28. Jul 2026

    Remove 6 antennas, 3 rru, 1 cabinet and cabling. install 3 antennas, 6rru, 2 cabinets and cabling. all scope will occur with the existing footprint.

    Filed Permit 202607245515 $$$ $80,000

DBI holds 50 permits for this parcel, most of them tenant improvements on individual floors. The timeline shows the 24 largest by stated cost, plus the earliest on file; the DBI query in the sources below returns all 50. 4 of them are nominal $1 street-space or sidewalk permits.