221 Main Street

1. Jul 1981

   Additions alterations or repairs.

   Complete Permit 8106031 $$$ $35,000
2. Sep 1987

   Install non-b partitions, sprklrs, plumb, electrical. work.

   Complete Permit 8713555 $$$ $900,000
3. Nov 2003

   Oti-1, 11th fl-el, me, ls, sp.

   Complete Permit 200311200728 $$$ $875,000
4. Jan 2013

   Suite #940 & #1000-tenant improvement to include new offices, conference rooms, breakroom, shower room, uni-sex restroom & new finishes. mep under seperate permit.

   Complete Permit 201301157982 $$$ $980,000
5. Aug 2014

   T.i. including new partitions and finishes. mep & lefe safety under seperate permit, new conference rooms, offices, pantry, open offices & phone rooms. n/a ordinance #155-13.

   Complete Permit 201408254634 $$$ $2,200,000
6. Oct 2014

   3rd & 4th fl mep for work on permit application 201408254634 on 3rd and 4th floor. new vav boxes, transfer fans, new heat pumps and fsds (on 3rd floor only). connecting power to new or relocated light fixtures, power outlets and tenant equipment.

   Complete Permit 201410148828 $$$ $1,100,000
7. May 2015

   Interior tenant improvement on the 8th fl. me[p, ls, fire sprinkler under sep permit maher not req.

   Issued Permit 201505055345 $$$ $700,000
8. Nov 2015

   Interior non structural demolition, new partitions, millwork, finishes, ceiling maher not req.

   Complete Permit 201511193120 $$$ $11,000,000
9. Nov 2015

   5th floor: t.i. includes demolition of non load bearing partitions & door assemblies, new partitions millwork, finishes new ceiling. mep & fire life safety under separate permit. maher n/a.

   Complete Permit 201511193074 $$$ $890,000
10. Jun 2016

    Tiebacks for new construction at 160 folsom street ref appln #201406259481s - maher ordinance - extended - exempted.

    Issued Permit 201606210511 $$$ $500,000
11. Sep 2016

    7th floor: ti - includes demolition non structural partitions and building new non structural partitions all new or revised hvac, electrcial, plumbing & life safety under separate permit build is fully sprinklered maher na.

    Complete Permit 201609238690 $$$ $805,728
12. Jul 2017

    4th floor - patio - renovation of existing 4th floor patio and garden within a commercial property. landscape improvements to include reconstructing planter areas and program spaces.

    Complete Permit 201707111462 $$$ $1,200,000
13. Nov 2018

    15th fl: ti to include dmeolition of non-load bearing partitionsm door assemblies, ceilings & light fixtures. new partitions, ceiling, light fixtures. mep under sep permit.

    Complete Permit 201811156051 $$$ $600,000
14. May 2019

    2nd fl, ste 250 - ti selective demolition of non-load bearing partitions and modification of existing ti. selective demolition & construction of non-load bearing partitions. new office doors & frmaes, partial new ceiling grid/tile. mep under separate permit. life safety & sprinklers under separate permit.

    Complete Permit 201905130444 $$$ $1,556,000
15. Jul 2019

    14th floor. tenant improvement to incl new partitions and finishes, ceiling, lighting, mechanical and electrical. life safety and fire sprinkler under separate permit.

    Complete Permit 201907317416 $$$ $1,100,000
16. Oct 2021

    Ste 580: finish upgrade of existing office building. no change of occupancy, addition of new partitions, ceilings, millwork, new meps layout and interior finishes.

    Complete Permit 202110130345 $$$ $1,121,264
17. Nov 2023

    8th floor. office ti. non-structural partitions. structural header for movable walls. new acoustical ceiling. new finishes. all interior work.

    Issued Permit 202311019990 $$$ $4,001,826
18. Apr 2024

    Work on ground fl, consists of interior demolition of non-structrural elements indlcuding but not necessarily limited to, interior partitions, doors, finishes, ceilings, lighting, mechanical & electrical outlets & switches.addition ofnewgender neutral restrooms.

    Complete Permit 202403147834 $$$ $1,375,798
19. Jan 2025

    16th floor: partial floor and ceiling demolition of existing tenant space. new interior partitios, ceilings, and finishes. mechanical and electrical work included.

    Complete Permit 202501067752 $$$ $1,086,562
20. Apr 2025

    Priority processing per ab-004.t.i of suites 104 & 250 on 1st fl & 2nd fl to create space for non-profit, private school for for grade 6-12, interior demolition of interior, including portion of 2nd fl structural slab fornew stair opening, construction ofnewparitions doors, ceilings, finishes, fixtures.

    Complete Permit 202504043725 $$$ $10,000,000
21. Dec 2025

    6th fl - new construction, mechanical & electrical & structural header for movable walls; power, lighting & signal; install new 37 cooling units, 1 new wshp, new duct.

    Issued Permit 202512091310 $$$ $6,158,186
22. Dec 2025

    5/fl-new interior ti to include mechanical and electrical. structrual for movable wall. includes mep work.

    Issued Permit 202512091312 $$$ $3,927,000
23. Dec 2025

    11/fl- ti demolition existing and build new partitions (non-structural) accoustical/ceiling, finishes, millwork new cafe.

    Complete Permit 202512151826 $$$ $4,000,000
24. Dec 2025

    10/f. t.i new non structural partitions, ceiling, finishes, fixtures. demolition under permit application 202511069080.

    Complete Permit 202512222392 $$$ $3,900,000
25. Mar 2026

    12th fl - interior ti in an existing building new construction of new partitions, case work & mep upgrades; millwork on 12th fl.

    Issued Permit 202603127419 $$$ $3,500,000

DBI holds 681 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 681. 13 of them are nominal $1 street-space or sidewalk permits.