50 Third Street

1. Dec 1980

   New construction.

   Complete Permit 8010595S $$$ $53,806,313
2. Nov 1982

   Additions alterations or repairs.

   Withdrawn Permit 8209432S $$$ $400,000
3. Apr 1983

   Misc.

   Expired Permit 8303516 $$$ $1,200,000
4. Jan 1992

   Alter lobby, 1st floor, sprinkler system 1st, 2nd & 3rd fls.

   Complete Permit 9201036 $$$ $8,500,000
5. Feb 1993

   Apply toyo coat.system to facades/add steel struct/flag pole.

   Cancelled Permit 9303131 $$$ $900,000
6. Nov 2002

   New corridor to garage/garage submitted under seperate app #200210310448.

   Complete Permit 200211081053 $$$ $800,000
7. Nov 2006

   Add 19 tac panels, 420 smoke detectors, 78 detectors with sounder base, 11 single station detectors, 52 speakers, 20 speakers strobes and 457 strobes. work on all floors.

   Issued Permit 200611157807 $$$ $215,000
8. Jan 2007

   Interior remodeling on floors 4, 35 and 36/: convert office space into 5 guest rooms construct new fittness center. 35 and 36th floor: interiro remodeling, removing interconnecting stair between floor 35 and 36.

   Expired Permit 200701091318 $$$ $650,000
9. Jan 2007

   1st fl - renovations to lobby; lounge, restaurant, bar & port cochere. 3rd fl-renovation to meeting rooms, corridors and pre-function areas. exterior-modify marquere canopy, install decorative glass on facade over existing facade. replace existing marble with cement fiber panels, glass/alum storefront.

   Expired Permit 200701111528 $$$ $1,500,000
10. Mar 2007

    1st floor: relocate 16 linear outlets and related ductwork, 3rd floor, relocate outlets and related ductwork, relocate vabs and tsats, add 1 ex fan for harvard meeting rm, add 5 smoke/fire dampers.

    Expired Permit 200703277397 $$$ $125,000
11. May 2007

    Non-stuctural demolition of drywall partitions &finishes.new drywall partitions, new bar fixtures, finishes, new accessible restrooms(2), cabinetry for lobby bar.creating a new occupant load for bar in lobby. note: electrical, hvac, & plumbing on separate permits.

    Withdrawn Permit 200705040530 $$$ $600,000
12. Dec 2012

    Interior renovation of existing restaurant, bar & lobby lounge, accessibility upgrades at 1st fl restrooms, bsmt parking garage & exterior renovation of exterior patio & restaurant entrance. interior improvements include new partitions, flooring, lighting, booths, furniture & accessibility upgrades. electrical.

    Complete Permit 201212035334 $$$ $750,000
13. Apr 2013

    Lobby - conension of existing lobby lounge to retail space, retail space build out under separate permit. replacement of existing revolving door & swing door with new vestibule, renovate existing luggage storage room, fire alarm & sprinklers under separate permit.

    Complete Permit 201304154588 $$$ $600,000
14. Feb 2014

    Convert 1 conference room on 33/f & 2 suites on 36/f into 7 guest rooms. work includes new showers, plumbing fixtures, finishes, millwork, partitions. electrical, plumbing, mechanical as required to complete the project scope. work also includes infill an existing opening in 36/f structural slab.

    Complete Permit 201402128356 $$$ $210,000
15. Dec 2015

    Tie back from shoring for 706 mission street.

    Complete Permit 201512023991 $$$ $10,000
16. Dec 2019

    Conversion of e basement kitchen and liquor storage room to administrative offices. new exhaust fan on 4th fl roof with ass ductwork servinbv new offices. new lec and mechanical scope in e phone room. updates to main entry and accessible path to travel.

    Complete Permit 201912270755 $$$ $140,000
17. Mar 2020

    Conversion of existing 3rd floor administrative offices to new fitness center & single occupancy all gender restroom. new mechanical, electrical & plumbing work associated with project scope.

    Complete Permit 202003167184 $$$ $176,093
18. Sep 2020

    Conversion of existing 4th floor fitness center into 5 new hotel guestrooms. new mechanical, electrical, and plumbing work associated with project scope.

    Complete Permit 202009124074 $$$ $310,625
19. Nov 2020

    Renovation to allexisting guestrooms+ guestroom corridors, work includes new finishes throughout, tub to shower convension modifications to electrical devices+modification to existing plumbing for fixture replacement.

    Complete Permit 202011309829 $$$ $17,993,900
20. Dec 2020

    Lobby level renovation includes new finishes, replacement of lighting, modification to bar & buffet, revision to existing restaurant layout & existing giftshop layout. modify existing electrical, plumb, & hvac. 2nd & 3rd floor renovation: new finishes, replace light fixtures. no hvac.

    Complete Permit 202012161147 $$$ $2,683,405
21. May 2021

    Ab-017 soft demolition non-structural. no ceiling, sprinkler or fire life safety scope. floors 4-36. no demolition in lobby.

    Complete Permit 202105240891 $$$ $1,189,398
22. Jun 2021

    Ab-017 soft demolition nonstructural. sprinkler work to be design/build under separate permit#202106112272.

    Complete Permit 202106152443 $$$ $454,000
23. Aug 2021

    Renovation to existing porte cochere including new finishes, lighting, partial infill of existing ceiling. sprinkler modifications to be design/build under separate permit. no hvac work.

    Complete Permit 202108267193 $$$ $706,850
24. Feb 2026

    Cooling tower replacement.

    Issued Permit 202602055328 $$$ $196,000

DBI holds 115 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 115. 1 of them are nominal $1 street-space or sidewalk permits.