Unfortunately, I have to agree with Henan Man that

Silicon Valley's housing price is very vulnerable that this moment. Most existing home owners are still in mental denial. However, if we simply go back to check out what happened during 2002, we should know that Silicon Valley's housing price is not as sticky as many people thought it to be. The reality is: Silicon Valley simply can't be immune from a severe economic crisis and large layoffs which is currently worsening. A drop of 25% to 30% is not inconceivable. As a sane investor, we have to face reality and be flexible. Denial is simply self-cheating which serves no good to protect ourselves.