Where are Orange County homes cheapest — per square foot?

Where are Orange County’s best housing bargains, based on selling price per square foot?
ReportsOnHousing’s June report shows the 10 markets with the lowest square-foot costs, one measure of relative value between communities or individual homes:
(1) Laguna Woods:$303 per square foot from 83 sales at an average $350,327 sales price for an average residence size of 1,156 square feet.
(2) Dove Canyon:$335, from 13 sales at an average $1,038,014 for 3,098 square feet.
(3) Placentia:$342