That's cool. Is there data for outside of San Francisco? For example, Brentwood? I am considering moving to Brentwood since Sonic offers fiber there. Would like to learn more about their coverage.
For those who don't know, Brentwood was slated to be one of the first places in the Bay Area to get fiber, mostly because Brentwood required fiber conduit houses built for all developments after 2000, and because its city council was fairly generous to Sonic themselves. I don't strictly blame Sonic here... they took a risk doing this and likely were unable to drum up the support and enthusiasm in the community that would make a true city-wide rollout economically feasible. Seeing Sonic's experience in Brentwood makes me believe that the only way FTTH will be vastly deployed in the US anytime soon is through government subsidy.
Data is specific based on the city's permits. If Brentwood has a site similar to http://bsm.sfdpw.org/ for pulling permits that would be a start. You can always check your address at https://www.sonic.com/availability too.