Hanger space at Aurora
I keep my Pitts at Aurora and just leased half of my hanger to an Extra 300L for $200 a month - a day late and a doller short : )
But...I know a number of folks at Aurora with space available if you are willing to share...nice thing about that is that it keeps the rent down, Aurora is untowered (good and bad depending on how you look at it) and your right on the same field as Vans and Pacific Coast Avionics for those days when you can't fly.
Aurora is about 20 minutes from Beaverton give or take depending on where in the city you are located, and it has an ASOS you can dial into, which is great for checking the weather before heading out to the airport.
Starks and Hillsboro would be good choices for proximity. Lenhardt, McMinnville less so because of the drive, but both excellent airports, and Independance even more so unless you want to drive an hour plus each way just to go to the airport (but it is a great airport). Also check out Newberg. They are building new hangers there, and it's pretty close to Beaverton as well. Troutdale, Mulino, and Pearson would be worth checking out, but are on the other side of the city, and only worth considering if you struck out elsewhere.
Feel free to drop me a line at 503-939-3018 if you need more.