Rent control is city-specific.  San Francisco confuses this a bit because it&#x27;s a one-city county; city and county are the same.<p>County ordinances only have effect outside incorporated land (cities). So, for example, you could have a Berkeley mailing address but actually live in unincorporated territory, in which case an Alameda County ordinance, if any, would apply, but not a Berkeley ordinance.  Years ago, I lived in an unincorporated parcel with a San Jose mailing address.