This is Mira Mesa, not Sorrento Valley. Sorrento Mesa if you want to get specific. If you look at its history, $755k is definitely out of the norm. Even bigger houses on bigger lots with canyon view north Calle Cristobal would have been happy to have it sold for $755k.
BTW, most of that 1/3 acre is the slope, so they’re not very usable. The backyard in that development is very small and they’re very squished together.