PreFab Modular

OneBuild (steel frame)

Seattle company

Hybrid Architecture

http://www.onebuildinc.com/gallery/projects/modules/mod-19

http://www.onebuildinc.com/gallery/projects/modules/nhabit-belltown

Blokable

http://www.blokable.com

http://www.blokable.com/microblok

https://www.bisnow.com/national/news/affordable-housing/your-lego-dream-home-could-become-a-reality-77733?be=larryp%40officelease.com&utm_source=Newsletter&utm_medium=email&utm_campaign=mon-21-aug-2017-000000-0500_seattle-re

Guerdon Modular Buildings

http://www.guerdonmodularbuildings.com/our-work-category/multifamily-housing

Seattle Cubix

http://www.guerdonmodularbuildings.com/our-work/cubix

Portland

https://www.bizjournals.com/portland/blog/real-estate-daily/2016/05/modular-construction-makes-its-way-to-portlands.html

Factory OS

https://factoryos.com/off-site-construction

Kasita

https://kasita.com

https://austin.curbed.com/2017/11/28/16712178/tiny-prefab-home-kasita-austin-expansion