I would call the entire peninsula from SF to San Jose one big suburb.
Hell, everything West of Gough St in SF is pretty suburb-like: mostly residential, a few shopping streets and no offices.
Despite that there are plenty of areas that are very walkable, including public transportation and shopping for daily needs.
Not every suburb looks like a cluster of single family homes with nothing else within 10 miles.
I would call the entire peninsula from SF to San Jose one big suburb.
Hell, everything West of Gough St in SF is pretty suburb-like: mostly residential, a few shopping streets and no offices.
Despite that there are plenty of areas that are very walkable, including public transportation and shopping for daily needs.
Not every suburb looks like a cluster of single family homes with nothing else within 10 miles.