@Steve B.. and others who keep preaching the outlying markets. I've heard the following statement many times.
"others have stated the dumb money is still driving up investments here while the smart money is looking outside Portland as an increasing population will drive up previously under appreciated outlying areas as a matter of simple demographics."
This position doesn't make sense. You're basically saying that 1) Portland won't have any appreciation because of dumb money increasing prices and 2) outlying areas still have appreciation because of migration. This mindset only looks at the negative in Portland and only looks at the positive in the outlying markets. Either way it’s short sighted.
If 1) is true. Then yes, you'll see appreciation in both types of markets. That is until the dumb money bursts the bubble, in which case these outlying markets will crash faster than Portland.
If 2) is true. Then Portland still has upside in appreciation. If this is the case, Portland has added leverage, so that can increase returns greatly over the alternative secondary markets.
Portland metro prices and rents are increasing right now as a side effect to Portland's rapidly increasing rates (which as @Derrick Aragon correctly stated is a function of high demand and low supply). Either way, Portland is the driving force in both cases.
I believe it is much more advantageous to be a "smart buyer" in Portland, buying properties that make sense with "forced appreciation", creating positive cash flow, a large % of equity and a cushion should the market go down. Buying properties in cheaper areas just because Portland is too expensive will have the same result in the end, just with lower leverage being factored in. We either get 1) Portland crashes, so do the outlying markets. In this scenario the alternative markets help you lose less because of leverage. Or we get 2) Portland continues to go up, which will continue putting upward pressure on the outlying areas. In this scenario the alternative markets earn less because of Portland's greater ability to leverage.
Portland has so much opportunity right now that ignoring it because of "dumb money" is super short sighted. Changing to a cheaper market doesn't make up for the work that you have to do, in any market, to mitigate risk in your acquisitions. If you're going to put the work in to be successful, you may as well put the work into a more expensive higher demand market. Portland's proven that it crashes less and rebounds faster than the suburbs. And it's not like the suburbs create great cash flow, so the lure of the secondary markets doesn’t make a ton of sense to me, unless you’re investing for appreciation, which starts this cycle right over again. :)