Portland is unique among similar cities in that large tracts of undeveloped land became available for housing construction in the last several years. That mean

Portland is unique among similar cities in that large tracts of undeveloped land became available for housing construction in the last several years. That means thousands of units will be available in the near future, in addition to the large number recently added to the inventory in the metro area. I'm guessing that would well exceed the 10% zoning limit increase you mention. I haven't checked housing costs recently, but anecdotal data (from people looking for apartments, etc.) is that prices are still through the roof (so to speak). It could be prices will decline later this year or into next year, but pretty soon the supply of new housing will cease to increase so rapidly. It remains to be seen what happens to housing costs. I could be all wrong, but I'll predict there won't be a significant decrease despite the rapid pace of development.