Fuckin' Waaaaaaah. Wanna see what horrible "regulation" killed microhousing? It's in the text:
Wanna see what Cap Hill looks like?
Fuckin' half a parking spot per rental unit.
So. I start new construction for a 10-unit "studio" apartment block and I need to build ten parking spots... because none of the tenants are not owning a car (and we all know it) and parking is already fucked up there. But I build "micro units" at 200 square feet and all of a sudden I need to build fifteen parking spots and the economics simply don't pencil out because a parking spot is already 100 square feet and suddenly my building is 1/3rd parking.
That's not "regulation" that's "quit externalizing your shitty business model all over your neighbors." By the way, studio apartments on Capitol Hill vary in size from 350 sqft to 500 sqft but all hit between $1300 and $1500/mo. That's what we rented our 1300sqft 3br, 1/3 acre house for about six exits north. This isn't the indigent waifs of Seattle we're talking about, this is Amazonians.
Up in my hood you can get a mortgage for that much even now.