Interesting, which got me thinking.. Where does it limit jurisdiction to unincorporated areas? After digging in the ordinance[1], it seems to apply to any "County department with a recognized County budget unit", which should include both cities and unincorporated areas [2], as the fiscal budget appropriates money to these populated areas.

If it's limited to unincorporated areas, then it would only enforceable in 8% of populated areas (primarily farmland), as 92% of the 1.8 million population lives in cities [3].

[1] http://sccgov.iqm2.com/Citizens/FileOpen.aspx?Type=4&ID=1493... [2] https://www.sccgov.org/sites/sccphd/en-us/Partners/Data/Page... [3] https://www.sccgov.org/sites/scc/pages/about-the-county.aspx