zoned C-42 commercial or up to 10.9 units per are, = poss. 20 condos, or small rv park or inn or? However county general plan amendment now provides RURAL commercial (RC) densities possibly limiting development to 2 per acre if that be the use. County flood control requirements also limit commercial development through the whole area. Listing agent will provide more info and provide contact info for San Diego County departments to communicate with regarding these issues.