Many houses, especially new houses (size 3000+ sqft) in Northern Inland are about $220 per square feet while many houses sold in 2001 in the same communities were about $170 per square feet.
In 4S Ranch and the such, $220 per square foot is an exception rather than the rule. Even those sold much cheaper than 170 per sq.ft. in 2001.
These are some of the cheapest (in terms of ppsf) relatively new homes for sale in North County.