Portland has no idea how to deal with the growth we get now, much less anything that would qualify as a 'boom'. Traffic is frequently terrible with no real plan in place on how to deal with it. The canned answer is 'more bikes and light rail' but that's clearly not going to cut it.

Plus, houses are already getting quite expensive here, largely due to that UGB you mention. Unless we're willing to compromise on that (and as a long-time resident who appreciates being able to reach something like wilderness pretty easily, I hope we do not) then pretty quickly we are going to have SF-level housing problems.