People are here posting how the market is crashing and keep using Temecula as an example. The reason why San Diego can sustain itself over a place like Temecula is that its is a coastal city and a hotbed for tourists.

The fact there are a lot of jobs there is no relevant. So does places like Irvine but homes in Irvine fail in comparison to Newport and home prices in Irvine do not affect prices in Newport.

The oppisite is true. Home prices in San Diego can have an effect though on Temecula and all other areas.