Does anyone have some really good websites for accurate up to date data for vacancy rates, median rents, average household income, etc? 

The E-Myth by Michael Gerber- Start and operate your business with the consumer in mind... not you... not your product or service.

So will see how that all shakes out for PDX. really the affordable is in Townhouse production by the large production builders thats about as good as it gets..

Warren Buffet has discussed this in the past saying if you had all the gold in the world you would have a giant cube of gold except for minor industrial uses, but if you had all the farmland in the world you would be able to produce a product (food) that people would buy, thus giving you a return on investment.

If you borrow against the equity, you'll need to include that payment in your calculation, as well.You make 3x the average income for Pennsylvania at the age of 32.

Real estate investing is forgiving; the average person can still make money even with some big mistakes.

The average currency last 37 years, this may last longer than average who knows for sure.

I’m making a few assumptions: 1) at least some buyers and sellers will accept much less agent handholding than commonly assumed, 2) the primary value that agents add is a) pricing guidance and b) advising clients on offers and counter-offers, and 3) there’s no truly compelling reason why North America has the highest average commissions in the rich world.

It's a pretty standard product these days.

Averaging these, I calculated ARV to be $174k.