Sproutly's list of local programs does not include the unincorporated areas of Alpine County. The list is not complete, so the county may still have rules. Check with the county before you raise the rent. Sproutly does not state the cap, who is covered, or what notices apply.
The list of places is not complete. A city that is not listed may still have rules.
Alpine County has no incorporated cities. Every address in it is in the unincorporated area.