400 Post Street
Store building · Union Square
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1909
Built for the Argonaut Club, an early Jewish club formed at a time when antisemitism kept Jews out of the city's other private clubs. Unusually for a private club, it has shopfronts at street level.
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July 4, 1909
John G. Sutton company, Judge manufacturing company, California concrete company, D. Ross Clarke and R. Zelinsky contracted to put up a three-storey class C building.
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1924
A fourth storey was added, by the architect of the original building.
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Dec 1982
Additions alterations or repairs.
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Dec 1990
Vertical addition.
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Mar 1994
Interior tenant uild-out.
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Jun 1994
Retail tenant improvement.
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Jun 1994
Fire protection tenant improvement.
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Oct 1994
Revision to appl #9407477, bookcase 5'9" in height.
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Oct 2008
Selective demolition of existing interior walls. construction of new demising wall and exit stair along with associated hvac, lighting and plumbing work. life safety under seperate permit.
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Oct 2008
Demolition (selective) expansion of existing restaurant and lounge onto 1st floor space. associated construction millwork, finishes, mechanical, plumbing, electrical, fire protection, structural work under appl. 200810023202. fire protection under separate permit.
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Aug 2010
New drywall partition, multifold doors, lighting, electrical, mechanical and sprinkler work to existing restaurant on lower level (below street level) sprinklers under separate permit. establishing occupant load.
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Sep 2011
Install new at&t (12) outdoor panel antennas to be mounted on existing sign structure on rool. paint to match existing sign. (8) at&t equip cabinets to be mounted on new equip platform on existing roof. antenna coaxial transmisiion lines from bts to qntennas. power to telco service provided from existing sources.
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Oct 2011
Building alteration - minor: replacement of storefront system, entrances & bulkhead, addition of canopy at corner of building. replace a portion of existing sidewalk in r.o.w. to meet accessibility codes.
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Oct 2011
Interior retail tenant improvement work includes minor demolition; new partitions, dumbwaiter shaft enclosure, doors & frames, finishes, lighting, electrical & mechanical, new restroom fixtures & finishes. sprinklers & fire alarm under separate permit.
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Nov 2011
3, 820 sq ft ground fl tenant improvemt for new banking ctr incl new atms cust areas, teller line, offices, employee break areas, restrm & back of house support spaces. work includes struct, electrical, mechanical, plumbing & finishes. related work under separate permit app for ext/storefront: ref #201110217364.
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Dec 2012
Ti. retail store minor demolition & new construction. new work includes partitions, finishes, relocating light fixtures, painting & casework on ground & second floor.
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Jul 2022
Att modification of unmanned telecome facility consisting of 3 panel antennas, new rf safety signs, barriers, triping roof. remove 20 batteries install new within existing, new batteries new vertiv battery rack.install new flx21 purcell cabinet w bbu, 6 new rectifiers within exostog dcpp cabinet.
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Jun 2023
Demolition or removal of existing flooring, existing interior partition walls, existing interior glazing, existing hvac ducts & diffusers, existing wall cladding, existing casework, existing light fixtures, existing electrical conduits. all finishesto be removed back to base structure. no storefront work under this permit.
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Jul 2025
Non structural demolition of an interior space. removal of existing demising wall between the spaces. demolition shall include removal of non-structual partition walls, finishes and fixtures. no change to existing building envelope/storefront. no change in use. no lighting fixtures.
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Dec 2025
At&t modification wireless facility consisting of: remove 9 antennas within existing frp structure; install 7 antennas; r/r rru's; remove 6 tma; remove 3 cabinets; install 2 omnion cabinets with rectifiers + converters; & (1) 15amp, 6 (50) amp + (3) 25 amp dc breakers.
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Feb 2026
Interior tenant improvement of an existing 4 story commercial/retail building. includes a new elevator to be under state agency review.no change in building area and no change to building use. exterior permit/scope is under a separate permit. demolition is under permit 2025-0716-0918.
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Feb 2026
Selective demolition in prepation for new vertical transportation: passenger elevator, demolition of existing elevator & machine room assemblies. freight elevator: selective demolition of floor & roof asscemblies. escalators: removal of four levels of escalotor equipment & the 1st level strc truss.
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May 2026
Exterior tenant improvement of existing retail space. interior under sep permit and signage under sep permit. exterior work includes new storefront system at gr gl with new canopy and facade maintenance. demolition under 202507160918. no change of use or occupancy.
DBI holds 133 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 133. 23 of them are nominal $1 street-space or sidewalk permits. 4 expired or cancelled permits are not shown.
Nearby
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- 450–456 Post Street Same block
- 535–545 Sutter Street Same block
- 432–462 Powell Street Around the corner
- Saint Francis Hotel Around the corner