If you are buying when unemployment is 4%, you are buying trouble
I googled the unemployment history of US, and here is the chart... Out of the past 65 years, maybe 10 saw unemployment at around 4%....All other 55 years were higher.... If you are buying RE in today's enviroment when unemployment is 4% and interest rate is 4%, you are buying yourself trouble, in my opinion....
As a matter of fact, RE in the Bay Area is slowing down already, in my observation... My favorite example - Redwood City listing prices is now 15% ish lower than what properties have been selling at in the last 6 months... Big signal to me...