460 Townsend Street

1. Aug 1988

   Reroofing.

   Complete Permit 8812355 $$$ $19,800
2. Sep 1991

   Parapet.

   Complete Permit 9117929 $$$ $14,000
3. Jul 1995

   Seismic upgrade.

   Complete Permit 9511819 $$$ $250,000
4. Aug 1997

   Install new auto fire sprinkler system-254 heads.

   Expired Permit 9715311 $$$ $38,000
5. May 1998

   Install fire alarm (1st floor only).

   Expired Permit 9808792 $$$ $700
6. Aug 2000

   Build out full height partition at all 3 levels.

   Expired Permit 200008036856 $$$ $12,000
7. Jan 2001

   Saw cutting/excavation/backfilling of conduit trench work.

   Expired Permit 200101099448 $$$ $9,000
8. Mar 2001

   Interior & exterior improvement.

   Withdrawn Permit 200103224937 $$$ $125,000
9. May 2010

   Respond to n.o.v. for academy of arts.; and bathroom additional. life safety upgrades to address n.o.v's. structural details for stars under separte permits.

   Complete Permit 201005051801 $$$ $135,000
10. Jun 2010

    Ti upgrade of existing fire sprinkler system. add 29 upright sprinklers, add 2 pendent sprinklers and delete 2 uprights.

    Complete Permit 201006013580 $$$ $12,000
11. Dec 2010

    Fire permit only. installation of new fire alarm system.

    Complete Permit 201012076214 $$$ $18,000
12. Apr 2011

    Revision to appl #201005051801 to provide structural details for new stair. no change of use & no change to approve design of stair.

    Complete Permit 201104073641 $$$ $1
13. Dec 2021

    Floors 1, 2: commercial ti to build a new conference room and storage room on the 1/f and new r&d workrooms on the 2/f. new electrical outlets and lighting replacement in select areas. updates to mechanical system to serve space including new exhaust fans. all interior work. no plumbing work included.

    Complete Permit 202112094119 $$$ $800,000
14. Apr 2022

    Mechanical and electrical for ti to include new split system ac units, new rooftop exhaust fans, new supply fans, new inline fan, new power and signal, power for new condensing units. ref ti permit 202112094119.

    Cancelled Permit 202204071764 $$$ $1
15. Apr 2022

    Mechanical portion of tenant improcement work. vrf cooling / heating system. exhaust fan, & associated ductwork & piping alterations. ref permit application 202112094119.

    Complete Permit 202204212665 $$$ $127,500
16. Apr 2022

    Fire sprinklers: relocate 3 uprights & 2 pendents on 1st fl. relocate 18 uprights & 10 pendents on 2nd fl. ref permit application 202112094119.

    Complete Permit 202204212692 $$$ $18,150
17. May 2022

    Floors 1, 2: fire alarm ti. adding 1 horn-strobe on 1st floor and relocating 4 horn-strobes on 2nd floor on existing notifier nfw2-100 fire alarm system.

    Complete Permit 202205103926 $$$ $11,772
18. May 2022

    Floors 1 & 2: electrical title 24 compliance docuements and electrical drawings for t.i. pa202112094119.

    Issued Permit 202205124074 $$$ $1
19. Aug 2022

    2/f: fire alarm t.i.: add 1 relay module to existing notifier nfw2-100 fire alarm system.

    Complete Permit 202208080052 $$$ $5,298
20. Jan 2024

    1st floor: existing fire sprinkler system. add 1 sprinkler.

    Filed Permit 202401103701 $$$ $650
21. Sep 2024

    1f - installation of an rf chamber. includes structural support & anchorage.

    Complete Permit 202409261681 $$$ $50,000
22. Oct 2024

    1st floor: existing fire sprinkler system. ti attached existing sprinkler within shield chamber with 1" to 2" line with a mechanical. tee. arch #202409261681.

    Issued Permit 202410173122 $$$ $17,000
23. Oct 2024

    Fire alarm ti adding 1 smoket detector and 1 strobe to existing notifier nfw 100 fire alarm system ref#2024-0926-1681.

    Issued Permit 202410183226 $$$ $6,710
24. Jan 2026

    Replace existing vertical fire-escape ladder on sw side, in the same location.

    Filed Permit 202511179764 $$$ $20,000

DBI holds 29 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 29.