The permitting in PDX is very permissive if you do the work yourself. You don't need to build a second house - you can essentially stand up a large shed and do

The permitting in PDX is very permissive if you do the work yourself. You don't need to build a second house - you can essentially stand up a large shed and do some pretty basic work to finish it into a studio apartment. Alternatively, the tiny home bubble has popped, and you can buy a used, pre-built tiny home and just park them on your property.