Hello from Portland :
Duplex - Four Plex market is so overpriced. Those that live in a market that can follow the 1% rule would faint. My personal take is that folks are using the 1% rule and then adding 100k to the price. I've seen duplex listed for 450k that bring in 3k a month in rent. Rent prices are up 40% in 4 years.
I wouldn't look in Portland but outside of Portland. Smaller towns in Yamhill or Washington County. Washington County has Intel and Nike World Headquarters so it isn't cheap.
Even at these prices, the small plex get snapped up. I saw a new listing yesterday in (Washington County ) Hillsboro. 2/1 duplex... the second bedrooms are non conforming / converted garage space. " Lower then market rents" .... the place is vacant. So yeah, I guess that is lower then market. One side is "mid construction". A rehab that stopped ? Most renters expect drywall, etc. Market rent is $1,000 mo. Asking price ? $270k. ( Plus costs to finish second unit.) I'm wondering if it will go into foreclosure ?
Portland Metro has very strict urban boundaries set by the state. You can't just go to the outskirts of the area and build new. This preserves rural lands but creates an artificial price influence too.