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

   Permit 8201338 $$$ $2,900,000

   Additions alterations or repairs.

3. 1983

   Rehabilitated.

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

   Permit 8307656 $$$ $70,000

   Move freight elevator, relocate west mezzanine switchgear.

5. Mar 1984

   Permit 8402905 $$$ $45,000

   Construct display area inside existing space building. 1000 sq.

6. Nov 1984

   Permit 8411701 $$$ $55,000

   Required by inspector to increase permit fees attached.

7. Apr 1985

   Permit 8503179 $$$ $150,000

   Tenant improvement encloding ceiling partitions.

8. Apr 1985

   Permit 8503433 $$$ $41,000

   Remodel space.

9. Aug 1986

   Permit 8609987 $$$ $60,000

   Height partitions, ceiling, new paint and wall covering.

10. Oct 1986

    Permit 8612867 $$$ $49,700

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

11. Nov 1989

    Permit 8922983 $$$ $65,240

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

12. Sep 2000

    Permit 200009150616 $$$ $74,500

    Reroofing.

13. Aug 2003

    Permit 200308212677 $$$ $65,000

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

14. Oct 2004

    Permit 200410146758 $$$ $80,000

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

15. Nov 2013

    Permit 201311041028 $$$ $30,000

    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.

16. Jul 2018

    Issued Permit 201807305840 $$$ $40,000

    Install new fire alarm system.

17. Dec 2020

    Withdrawn Permit 202012040319 $$$ $40,000

    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'.

18. Nov 2025

    Permit 202511240262 $$$ $50,000

    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.

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. 8 expired or cancelled permits are not shown.