350 Masonic Avenue

1. August 25, 1964

   Photographed.

   San Francisco Subjects Photograph Collection (SFP 162), San Francisco Public Library
2. Nov 1985

   Roof extension - conversion of portion of roof & additions.

   Complete Permit 8512993 $$$ $1,250,000
3. Dec 1987

   Horizontal addition.

   Complete Permit 8717357 $$$ $550,000
4. Jul 1988

   Vertical & horizontal addition.

   Complete Permit 8809997 $$$ $1,900,000
5. Feb 1989

   Sprinkler system.

   Complete Permit 8901846 $$$ $27,500
6. Jun 1993

   Minor struct/new partit/demolition/relocate plumb/minor electrical/add h.

   Complete Permit 9309906 $$$ $30,000
7. Dec 1993

   Horizontal addition.

   Expired Permit 9322798 $$$ $2,000,000
8. Jan 1995

   Upgrade existing fire alarm, system.

   Expired Permit 9500791 $$$ $9,000
9. Mar 1999

   Improve 2nd floor library and 1/f & g/f computer science rm.

   Expired Permit 9905209 $$$ $175,000
10. Jul 2007

    New fire alarm/voice evacuation sys incl manual pull stations, smoke&motion detectors, ctrl modules&detectors for elevr ctrl, ctrl modules for dr ctrl, modules&detectors for fan ctrl, modules&detectors for fsd ctrl, monitor modules for sprinkler sys&security sys supervision audible/visual noti appliance.

    Issued Permit 200707025713 $$$ $48,000
11. Jul 2007

    Reroofing.

    Complete Permit 200707318231 $$$ $39,500
12. Apr 2012

    Local voluntary structural strengthening per plan.

    Complete Permit 201204198692 $$$ $70,000
13. Jun 2012

    Remodel existing kitchen and cafeteria at ground floor level. 3 new fire smoke dampers, new type 1 and 2 hoods, new exhaust ducting. fire alarm separte permit for fsd and suppression system connections. hood nad duct fire protection separate permit. exterior changes to be under separate permit.

    Complete Permit 201206011669 $$$ $397,000
14. Jun 2012

    Modification to e roofop playground fence including repairs in kind and adding a new overhead protective netting as well as new support for new basketball hoops/backboards. work also includes new waterproofing.

    Complete Permit 201206293870 $$$ $27,000
15. May 2013

    New concrete/shotcrete site wall (retaining wall) along north property line 94'-0" long.

    Issued Permit 201305217529 $$$ $80,000
16. Oct 2019

    New building on two lots block 1149, lot 029 & lot 011. to erect 3 stories, no basement, type ii-b, school building.

    Complete Permit 201910164593 $$$ $4,500,000
17. May 2020

    Install temporary shoring to allow excavation for new development under permit application 2019-1016-4593.

    Complete Permit 202005197605 $$$ $50,000
18. Oct 2020

    Voluntary structural strengthening and barrier removal at the entrance on golden gate ave. no changes to the existing school use or exterior building envelope.

    Complete Permit 202010277496 $$$ $500,000
19. Oct 2020

    Deferred brb frame for pa201910164593.

    Complete Permit 202010297692 $$$ $30,000
20. 2021

    Built.

21. Oct 2021

    To install the san francisco errcs compliant head end unit on the roof that connects to (7) interior antennas on all three levels. donor "roof" antennas pointing towards twin peaks master site.

    Complete Permit 202110200813 $$$ $50,000
22. Mar 2022

    Remodel existing rooms with new finishes, paint, lighting and acoustical treatment. sinks added to the science and math room. interior parition added in shared office space room no change to existing school use or exterior building.

    Withdrawn Permit 202203109749 $$$ $80,000
23. May 2024

    Ti hallway renovations (finishes, partitions, lighting); bathroom ada upgrades on ground fl; add 1 adult bathroom on ground fl; no structural work.

    Complete Permit 202405011192 $$$ $660,000
24. Jun 2024

    Removal of (2) existing rtus and 7 split system. installation of (2) new rtus and 7 new split systems. same location. similiar weight.

    Issued Permit 202406214983 $$$ $128,454
25. Jan 2026

    Revision to bpa#202405011192. interior renovation of corridors on ground floor, 1/f & 2/f restrooms. refrence permit#202506309738.

    Issued Permit 202601153981 $$$ $300,000
26. Jun 2026

    Remodel existing roof-top play area that includes the removal and replacement of an existing play structure, restriping of a play court, minor structural strengthing of roof framing members beneath the play structure, and resurfacing/reroofing.

    Issued Permit 202606123084 $$$ $300,000

DBI holds 69 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 69. 6 of them are nominal $1 street-space or sidewalk permits. The assessor dates the building to 2021, after this photograph was taken.