I agree with Ryan,One major thing that hasn't been spoken much of is being "counter cyclical"...Remember right after 9/11 how the stock market began to plummet?

Since he is going back to Mexico, his caring about the situation has plummeted.

Rents and prices will plummet when interest rates go up?

In my world, if some gang moves into an area, that can plummet the rental rates, but it takes a seasoned mind to know how to even look for that.  

The town's population and housing demand plummeted, and it turned out to be a bad investment. 

Sacramento got plummeted with hard core foreclosures at 50-60% discounts.

From amazing returns in the early nineties to a plummeting crash that sent repercussion’s world-wide into every sector, the real estate market has had its highs and certainly its low.

It is hard to imagine the areas we're looking in Seattle will plummet especially it looks like there is strong job growth in these areas, which is also bringing in population growth.

Did you see how far the Dow plummeted?  

Thus the occupancy of the neighborhood plummets, the values plummet because landlords have a hard time selling their units to an owner occupant, and the tenants who want to live there are locked out.