The video points towards the migration of Bay Area residence and Golden 1 Center as some of the driving forces.

There are three things I think are important for investing population migration to an area bases on job growth and affordability. 

I'm an aspiring investor in the Washington state market and am looking for macro data on counties and/or cities in my state (property values, RE sales data, vacancy rates, migration, etc).  

Migration data from the Internal Revenue Service, or IRS, show that as of tax year 2014, the average income of taxpayers leaving Illinois was $77,000 per year compared to an average income of $57,000 per year for those moving into Illinois.

Although, it has had a lot of growth recently, it is still getting a good amount of incoming migration and growth happening, with business growth (Oracle's new campus, etc). 

It doesn't mean they're not fine areas to live in, it just means that migration forces tend to see these areas appreciate slower or later than other nearby areas that experience greater demand from homebuyers.

If you are concerned that people are migrating I would look to see where they are migrating to and begin to size that market up for expansion.

We are doing exactly that in Texas.Given the current boom in Texas housing and the continued migration of people from other states, we are very optimistic that we will be able to find attractive opportunities to develop lots for builders.  

I've lost two good renting couples to Centennial so that tells you the demographic will improve with sustained economic prosperity and incoming migration.  

Nashville has great tourism, great rental migration for work and appreciation generating property everywhere.