This house is relatively expensive compare to other house in Sorrento Valley. Here’s one that’s bigger at a slightly higher price: Linky.
This one is 2527 sq-ft asking for $650,000 – $690,000. Which equates to $257-$273/sq-ft. While the one you linked to is 1832 sq-ft asking for $615-674k, which equates to $335-$368/sq-ft.