450 Irwin Street

1. 1951

   Built as the Greyhound Bus Lines garage, designed in 1950 by Skidmore, Owings & Merrill: an unusually complete application of the International Style to a utilitarian building, and one of the most architecturally significant buildings of the immediate postwar years in the district.

   Showplace Square / Northeast Mission Historic Resource Survey, adopted 2011
2. Oct 1995

   Non-structural demolition of office partitions.

   Complete Permit 9517367 $$$ $62,520
3. Nov 1995

   Remodel existing building, new restroom, elevator and struct.

   Expired Permit 9518445 $$$ $137,000
4. Jan 1996

   Structural upgrade of existingbuilding.

   Expired Permit 9600323 $$$ $137,000
5. Jun 1997

   Seismic retrofit only.

   Complete Permit 9710045 $$$ $500,000
6. Dec 1997

   Relocate rest rooms, #9710045.

   Complete Permit 9724354 $$$ $2,200,000
7. Feb 1998

   New fire sprinkler system in eq retrofitted building.

   Complete Permit 9802393 $$$ $120,000
8. Apr 1998

   Reroofing.

   Complete Permit 9805943 $$$ $138,714
9. Apr 1998

   Build out additional space within core upgraded-9710045.

   Complete Permit 9807682 $$$ $2,100,000
10. Jun 1998

    Provide mec electrical/hvac/lighting(revise ap#9724354 & 9710045).

    Complete Permit 9809953 $$$ $510,000
11. Sep 1998

    To install partitions in existing space/all partitions non-b.

    Complete Permit 9818442 $$$ $120,000
12. Oct 1998

    Install ramp for exiting.

    Complete Permit 9822365 $$$ $85,000
13. Dec 1998

    Revised fire sprinkler plans permit application 9802393.

    Complete Permit 9825243 $$$ $120,000
14. May 2008

    1)convert existing class room into 2 class room by adding new bearing wall. 2) construct new bearing wall to crate new room mfp & sprinkler under seperate permit.

    Expired Permit 200805131960 $$$ $267,900
15. Feb 2016

    Interior remodel in existing college of the arts building. remodel includes 2-story "classroom pod" with (3) offices on 1st fl & double height space "open studio". relocate existing stair & extend existing interior balcony to access 2nd fl of the classroom pod. replace existing skylight.

    Complete Permit 201602038686 $$$ $1,600,000
16. Jun 2016

    No addt'l space conditioning capacity to be installed as part of this permit, install rooftop exhaust fan for open studio 150, install rooftop exhaust fan for vocational classrm studio 240, install rooftop exhaust fan for classroom 140 & 121.install reheat coil complete with ductwork to rms 140 &141.

    Complete Permit 201606109683 $$$ $160,000
17. Jul 2016

    Install lights, plugs, conduit & cabling; also fire alarm data for 2 new classroom pods & 1 open class room area. ref pa 2016-0203-8656.

    Complete Permit 201607283570 $$$ $376,000
18. Jun 2018

    To erect 4 stories, no basement, type i-a & v-b, post secondary education.

    Complete Permit 201806283199 $$$ $70,000,000
19. Jun 2020

    Test pile program associated with 201806283199, cordon-johnson & assoct will install 4 sacraficial test piles, 4 sacrificial reaction piles & perform load testing in advance of installation of appox production piles.

    Complete Permit 202006269257 $$$ $100,000
20. Apr 2022

    Interior tenant improvement, non structural, approx. 9200 sq ft.

    Issued Permit 202204222823 $$$ $110,000
21. Oct 2022

    Auger cast pile.

    Expired Permit 202210315479 $$$ $1,500,000
22. Mar 2023

    New nfpa 13 automatic wet fire sprinkler system, 1160 new sprinklers.new nfpa 14 class 1 manual wet standpipe system including combination standpipe, 28 hose valves.new nfpa 20 horizontal splitcase fire pump system including jockey pump, controllers, and test assemblies. reference bpa#2018/0628/3199.

    Withdrawn Permit 202303224158 $$$ $732,300
23. Apr 2023

    Alteration to existing clerestoru window, replace with temp insul window units. not visible from street.

    Complete Permit 202304206113 $$$ $450,000
24. Apr 2024

    Installl emergency responder radio coverage system.

    Complete Permit 202404089579 $$$ $50,000
25. Jul 2024

    Interior ti (n0n-structural) of partial 2nd fl of existing schoool, addition of rooftop mechanical with structural support, no area increase. no change in occupancy.

    Withdrawn Permit 202407035774 $$$ $186,000
26. May 2025

    2nd/fl: interior tenant improvement of approx. 2004 gsf of the existing use on the second floor, and exterior modifications tot eh roof for the additio of the erv unit to provide make-up air serving the area of the interior renovation.

    Complete Permit 202505287353 $$$ $180,000

DBI holds 105 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 105.