La Jolla is a coastal market, too many variables (distance to water, view of water, audible range of water). In a more level market that is inland we still can’t give you a price guess per sq ft. because 1200 sq ft homes and 3000 sq ft homes on the same sized lot won’t have the same ppsqft, one story vs two story also are different.
That is why we prognosticators use terms like % off from peak or predict prices in terms of what year (ie. 2003 prices).
Here’s my vague answer to your vague question, you will pay LESS per square foot.