37.7941, −122.4015 A locator map appears here once a Mapbox token is configured.
Know This Place

District 3 · Block 0228, Lot 004 · ZIP 94111

Sun Building

401–405 Sansome Street

  • Office building
  • 4 stories
  • 11,740 ft2
  • 2,966 ft2 lot area
  • 4 residential units
  • 29 rooms
  • Zoned C3O
  • Historic resource
37.7941, −122.4015 Street View appears here once a Google Maps embed key is configured.
  1. 1906

    Built.

  2. between 1947 and 1951

    The Office of the Assessor-Recorder photographed the property for tax assessment.

    Assessor-Recorder Photographs (SFP 23), San Francisco Public Library
  3. July 9, 1957

    The Office of the Assessor-Recorder photographed the property for tax assessment.

    Assessor-Recorder Photographs (SFP 23), San Francisco Public Library
  4. Dec 1991
    Permit 9124036 $$$ $10,500

    Reroofing.

  5. Dec 1993
    Permit 9322268 $$$ $114,000

    Seismic upgrade.

  6. Sep 1994
    Permit 9415254 $$$ $1

    To comply with umb ordinance (detail change).

  7. May 1997
    Permit 9707998 $$$ $26,250

    Interior tenant improvement.

  8. Feb 1999
    Permit 9903233 $$$ $5,000

    Tenant improvmnt-remv/replace front counter &floor, install soffit.

  9. May 2000
    Permit 9926189 $$$ $35,000

    Install 7 equipmetn cabinets & six antennas at this site.

  10. Apr 2009
    Permit 200904095941 $$$ $4,000

    Replace existing non ul 300 with new ul 300 wetchemical fire system. fire alarm connection seperate permit.

  11. Aug 2009
    Permit 200908205259 $$$ $45,000

    Wts facility - installation of: 1 bts (base transceiver) equipment cabinet on the roof top on an existing sprint/nextel platform; 3 panel antennas (1 per sector) in 2 frp faux chimney on roof; 1 gps antenna; 1 internet services exchange switch antenna.

  12. Aug 2011
    Permit 201108313684 $$$ $45,000

    Wireless facility modification: replace 3 panel antennas with 6 new panel antennas. replace 3 existing equipment cabinets with 3 new equipment cabinets. run coaxial lines from equipment to antennas.

  13. Feb 2012
    Permit 201202224642 $$$ $8,000

    1. remove & replace portion of existing sidewalk, remove & replace deteiorated steel beams if found rusted below sidewalk and trap door with new (sub-sidewalk basement below.) 2. remove existing curb ramp and replace with 2 new curb ramps at cornor of sansome & sacramento st.

  14. Oct 2018
    Permit 201810022020 $$$ $25,000

    Sprint proposes to remove 6 antennas and replace 3 of the 6 with new antennas and add 3 new rrus to rooftop.

  15. Mar 2023
    Permit 202303304755 $$$ $5,000

    Deconstruction of legacy sprint equipment antennas tmas, antenna harware, rrus telecom cabinets, h-frames, coax cabling two clusters.

  16. Jan 2025
    Permit 202501037688 $$$ $3,000

    Accessible business entrance program per ordinace 51-16 compliance with abe 202207051812. intstallation of automatic ada door opener.

  17. Feb 2025
    Permit 202502049669 $$$ $3,000

    Installation of an ada door opener to comply with abe program abe 202206281810.

1 nominal $1 street-space or sidewalk permit is omitted from the timeline. 7 expired or cancelled permits are not shown.

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