221 Main Street

1. 1973

   Built.

2. 1975

   Designed by Corwin L. Booth. An International Style office building.

   Architecture, Planning & Preservation Professionals: A Collection of Biographies, adopted 2021
3. Jul 1981

   Permit 8106031 $$$ $35,000

   Additions alterations or repairs.

4. Sep 1987

   Permit 8713555 $$$ $900,000

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

5. 2001

   The 17-storey tower held offices over ground-floor retail.

   San Francisco Department of City Planning, Residential Development at 201 Folsom Street: Initial Study, 2001.
6. Nov 2003

   Permit 200311200728 $$$ $875,000

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

7. Jan 2013

   Permit 201301157982 $$$ $980,000

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

8. Aug 2014

   Permit 201408254634 $$$ $2,200,000

   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.

9. Oct 2014

   Permit 201410148828 $$$ $1,100,000

   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.

10. May 2015

    Issued Permit 201505055345 $$$ $700,000

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

11. Nov 2015

    Permit 201511193120 $$$ $11,000,000

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

12. Nov 2015

    Permit 201511193074 $$$ $890,000

    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.

13. Jun 2016

    Issued Permit 201606210511 $$$ $500,000

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

14. Sep 2016

    Permit 201609238690 $$$ $805,728

    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.

15. Jul 2017

    Permit 201707111462 $$$ $1,200,000

    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.

16. Nov 2018

    Permit 201811156051 $$$ $600,000

    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.

17. May 2019

    Permit 201905130444 $$$ $1,556,000

    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.

18. Jul 2019

    Permit 201907317416 $$$ $1,100,000

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

19. Oct 2021

    Permit 202110130345 $$$ $1,121,264

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

20. Nov 2023

    Issued Permit 202311019990 $$$ $4,001,826

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

21. Apr 2024

    Permit 202403147834 $$$ $1,375,798

    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.

22. Jan 2025

    Permit 202501067752 $$$ $1,086,562

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

23. Apr 2025

    Permit 202504043725 $$$ $10,000,000

    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.

24. Dec 2025

    Issued Permit 202512091310 $$$ $6,158,186

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

25. Dec 2025

    Issued Permit 202512091312 $$$ $3,927,000

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

26. Dec 2025

    Permit 202512151826 $$$ $4,000,000

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

27. Dec 2025

    Permit 202512222392 $$$ $3,900,000

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

28. Mar 2026

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

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

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. The assessor records 1973; the Pacific Coast Architecture Database records 1975. The 2001 initial study describes the building as 17 storeys; the assessor's roll counts 16. The 2001 initial study files this address under assessor's block 3746; the address resolves to block 3740.