350 Treat Avenue

1. 1944

   Built as an industrial building, recorded as occupied by Stair factory. Designed by Alfred P. Fisher. The survey credits Alfred P. Fisher in 1944 and J. Lloyd Cornish in 1947.

   Showplace Square / Northeast Mission Historic Resource Survey, adopted 2011
2. Dec 1994

   Reroofing.

   Expired Permit 9419816 $$$ $52,000
3. Sep 2011

   Separation of welding operation from automotive repair by 2 hour wall/ceiling. modify entrance to building by installing at framp at entry and lower slab at interior. install automatic push botton at entry. change doors, hardware in path of travel. modify sprinkler system as necessary. sep permit.

   Issued Permit 201109084137 $$$ $36,700
4. Jan 2014

   Demolition existing partition wall, plumbing fixtures and a portion of the slab for future plumbing. work also includes minor electrical demolition. no exterior work included in this permit. per ab-017.

   Complete Permit 201401226819 $$$ $3,500
5. Feb 2014

   Voluntary access upgrades to the main entrance restrooms and main stair. work also includes demolition to small portion of roof and kitchenette and breakroom. 2nd exit added. mep and fire under separate permit. maher ordinance not required.

   Complete Permit 201402047810 $$$ $20,000
6. Nov 2015

   Reroofing.

   Complete Permit 201511122463 $$$ $295,000
7. Mar 2016

   New roof mounted boiler and hvac units and assoc. equip. with associated structural, ducting plumbing and electrical; new wall insulation and interior cladding; new electrical service pg&e transformer room, new electrical room, and associate changes. n/a for maher.

   Complete Permit 201603031142 $$$ $480,000
8. May 2016

   Grd. floor. relocate two fire sprinklers to conform with the new wall/ceiling layout of the tenant improvement. ref permit application 201603031142. n/a maher ordinance.

   Complete Permit 201605278570 $$$ $1,020
9. Nov 2017

   Interior tenant improvement of existing space to accomodate light manufacturing of laser sensors. scope includes structural alteration to mezzanine and mep. build out of clean room under sep permit maher not req. sprinklers deferred.

   Complete Permit 201711214631 $$$ $1,200,000
10. Dec 2017

    Demolition of mezzanines and reinforcement of existing columns at roof structure. n/a for maher.

    Issued Permit 201712126226 $$$ $120,000
11. Jan 2018

    Install 11 pendants & 11 new uprights of 13 new mechanical tees for new configurations. ref pa 2017-1121-4631.

    Complete Permit 201801309928 $$$ $6,500
12. Jan 2018

    Revision to permit application 201711214631, install new exhaust for existing pantry room and electric cooktop. maher na.

    Issued Permit 201801309891 $$$ $1,000
13. Feb 2018

    New fire alarm system includes 1 fire alarm control unit; 1 icgm-4 communicator, 1 annunciator; 2 photoelectric smoke detectors; 3 dual monitor modules, 1 manual pull stattion; 10 wall mounted horn/strobes, 7 ceiling mounted horn/strobes; 6 wall mounted strobes; 2 ceiling mounted weather proof.

    Complete Permit 201802141210 $$$ $22,000
14. Apr 2018

    Administrative permit to document that work performed under permit application 201109084137 was superceded by work under permit application 201711214631. maher na.

    Complete Permit 201804116109 $$$ $1
15. Apr 2018

    Revision to permit application 201711214631. exterior door replacement.

    Complete Permit 201804126153 $$$ $2,000
16. May 2018

    As-builts: ref permit application 201804055583 - added two relays for roll-up door close, access control shunt. eol changes. new door ref #201804126153.

    Complete Permit 201805088555 $$$ $1
17. Sep 2018

    Demolition of existing non-load bearing demising wall. patch& repair any damaged wall. new non-load bearing partition walls and doors. new t-bar ceiling and lighting fin fab clean room. new wall mounted lights in exist corridor.

    Complete Permit 201809049004 $$$ $5,000
18. Sep 2018

    Install 6 evac signs.

    Issued Permit 201809109509 $$$ $3,600
19. Oct 2018

    Ref 201809049004 provide and install heating, ventialation, air conditioning and ductwork for fabrication clean room space.

    Issued Permit 201810011896 $$$ $5,000
20. Oct 2018

    Install 45 new pendants off of 29 new mechanical tees for new room configuration ref 201809049004-ordianary hazard spacing and new siesmic bracing calcs.

    Issued Permit 201810173462 $$$ $10,000
21. Nov 2018

    Fire alarm ti: add 5 horn strobes 3 strobes, 1 duct detector with smoke and relay module. ref permit application 201809049004.

    Complete Permit 201811065055 $$$ $6,500
22. Jan 2019

    New lighting, new electrical outlets, new electrical panels, new 112.5kva transformer. ref ti #201809049004.

    Complete Permit 201901231001 $$$ $120,000
23. Jan 2020

    Furnish and install fluid cooler and circulating pumps to serve 5 environmental test chambers / condenser water system at exterior.

    Issued Permit 202001313246 $$$ $150,000
24. Jul 2024

    This project is the construction of an accessory structure housing shaking test equipment.

    Filed Permit 202407116330 $$$ $18,000
25. May 2026

    Alteration to existing interior non load bearing wall. relocation of existing door and creation of new convenience door connecting areas fo the facility.

    Complete Permit 202605272021 $$$ $9,800

DBI holds 26 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 26.