Hi Kristen!
My place is way to tiny to host you, unless you want to camp, and my place isn't that far along either. BUT, I do know of a few places that maybe might work out. One is CopperMoon Advanced Retreat Center (
http://www.coppermoonie.com). They're located northeast of Seattle, in the foothills. One of the owners,
Scott McBride, is here on permies, so you can send him a "Personal Mooseage." But, you might get a faster response via his webpage or facebook page (
https://www.facebook.com/CoppermoonARC/?fref=ts)
Another place is Windward Ecovillage in south central Washington (Klickitat county)
http://windward.org. One of the members,
Andrew Schreiber, is here on permies, so you can send him a "Personal Mooseage" or contact Windward via their webpage.
There's probably more Cascadia permaculuralists able to house you, these were just the ones I found here:
https://permies.com/t/52406/Cascadia-Bloggers-Websites-Facebooks-Project
I hope that helps and you're able to find a place to stay. If you end up in the Seattle area, your more than welcome to swing by my place for a tour. I live not far from Coppermoonie

.