BBB web site address that binance provided:
ONE LETTERMAN DRIVE, BUILDING C, SUITE C3-800, THE PRESIDIO OF SAN FRANCISCO, SAN FRANCISCO, CA, 94129, UNITED STATES
does not work very well instead map does bunch of address edition and finds approx. address
https://www.bbb.org/us/ca/san-francisco/profile/cryptocurrency-exchange/binanceus-1116-925674
https://opencorporates.com/companies/us_ak/10122418
After some tinkling around I found what appears to be an exact match, there is something called BAM trading service situated in one of the building in Presidio drive. If anyone in the US, especially in the bay area or other area, being oppresssed by binance's elusive policy should reach out or at least try to reach out by coming in person there:
Google map findable address:
Building C, 1 Letterman Dr C3, San Francisco, CA 94129
https://goo.gl/maps/dvoTS9GCWkXPPvuj8