550 15th Street

1. 1906

   Built as an industrial building, recorded as occupied by San Francisco Salt Refinery / Stauffer Chemical Borax storage.

   Showplace Square / Northeast Mission Historic Resource Survey, adopted 2011
2. Feb 1982

   Additions alterations or repairs.

   Complete Permit 8201338 $$$ $2,900,000
3. 1983

   Rehabilitated.

   Showplace Square / Northeast Mission Historic Resource Survey, adopted 2011
4. Aug 1983

   Move freight elevator, relocate west mezzanine switchgear.

   Complete Permit 8307656 $$$ $70,000
5. Mar 1984

   Construct display area inside existing space building. 1000 sq.

   Complete Permit 8402905 $$$ $45,000
6. Jun 1984

   Reconstruction located on the roof #8201338.

   Expired Permit 8406790 $$$ $78,000
7. Nov 1984

   Required by inspector to increase permit fees attached.

   Complete Permit 8411701 $$$ $55,000
8. Apr 1985

   Tenant improvement encloding ceiling partitions.

   Complete Permit 8503179 $$$ $150,000
9. Apr 1985

   Remodel space.

   Complete Permit 8503433 $$$ $41,000
10. Aug 1985

    Tenant improvement on part of 3rd floor including partition.

    Expired Permit 8509539 $$$ $70,000
11. Aug 1986

    Height partitions, ceiling, new paint and wall covering.

    Complete Permit 8609987 $$$ $60,000
12. Oct 1986

    Install rolling & exit fire doors, non-bearing partitions.

    Complete Permit 8612867 $$$ $49,700
13. Sep 1988

    Relocate interior walls, change electrical fixtures, sprklr system.

    Cancelled Permit 8813856 $$$ $75,000
14. Aug 1989

    Relocate interior walls.

    Expired Permit 8913814 $$$ $60,000
15. Sep 1989

    Horizontal addition.

    Expired Permit 8917814 $$$ $104,400
16. Nov 1989

    Demolish partitions, new drywall, floor finish paint, electrical.

    Complete Permit 8922983 $$$ $65,240
17. Oct 1990

    Interior remodel of existing showroom space on g/f.

    Cancelled Permit 9021916 $$$ $62,000
18. Nov 1991

    Install new toilet, new show room for cabinet mfg.

    Expired Permit 9122344 $$$ $40,000
19. Sep 2000

    Reroofing.

    Complete Permit 200009150616 $$$ $74,500
20. Sep 2000

    Reroofing.

    Expired Permit 200009251467 $$$ $71,500
21. Aug 2003

    Tenant improvement and interior renovation, new toilets, new partitions, accssble upgrade.

    Complete Permit 200308212677 $$$ $65,000
22. Oct 2004

    Installation of new metro pcs wireless telecommunications facility and associated equipment.

    Complete Permit 200410146758 $$$ $80,000
23. Nov 2013

    New filming/interaction studio. change of use from b to a3. fire sprinkler and fire alarm under separate permit.compliance with ord. 155-13 not required.

    Complete Permit 201311041028 $$$ $30,000
24. Jul 2018

    Install new fire alarm system.

    Issued Permit 201807305840 $$$ $40,000
25. Dec 2020

    Modification to an existing t-mobile wireless facility. remove 3 antennas, 12 rrus. install 9 antennas, 6 rrus and 2 equipment cabinets. the rad center for alpha and beta sectors will remain at 55.9' and the rad center for gamma sector at 62.8'.

    Withdrawn Permit 202012040319 $$$ $40,000
26. Nov 2025

    T-mobile: modification to an existing wireless facility: 3 new antannas, 2 new raised foot curbs + masts, 1 new antenna wall mount, 3 new cable tray screens, painting/wrapping antennas/antenna mounts/masts/exposed cables to match building eligible facility request.

    Complete Permit 202511240262 $$$ $50,000

DBI holds 144 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 144. 1 of them are nominal $1 street-space or sidewalk permits.