Oooohhhh!!! Thanks to both of you. At least now I have some places to start. My boyfriend works for Mercedes Benz so basically we're looking at any places that have a dealership - so right now Wilsonville and Portland proper.
Realistically speaking, if I could rent a place on horse property that would be my idea situation however that's not proving to be so easy to find. Second best option is full care board somewhere with LARGE stalls (my big boy is 17hh and can't be shoved into a 12'x12' stall) and either attached runs or daily full day turnout. Arena is a must as well as the option to feed my grain and supplements if they don't have something that will work for him.
At this point, my goal is to move jager up with me first and see how things work out. The other two (my mare and coming 2yr old gelding) will stay in reno until i'm certain i've found the right place for all of them. *sigh* never easy is it?