Custom Tiny Homes, Park Models,

and Micro Studios


ADU / Guest House 



Micro Studio / Office





Park Model & Tiny Home


20 Twenty SMI builds Custom ADU’s, Accessory Structures, Tiny Homes & Park Models in Salem. These homes are manufactured with both GreenFLEX and traditional stick-frame. Our GreenFLEX models are a world first, combining the durability of concrete, the super-insulation of modern EPS foam, and the mobility of a Park Model. Our ADU’s, Accessory Structures, Tiny Homes and Park Models come either as a shell or completely finished. The RV’s are tested to meet ANSI A119.5 & FPBR 1192 and we are certified by RVIA. This meets the standard for a RV Park Model in almost all states. Please refer to the applicability in your state and reference to the associated laws. Please note that in many states Park Model RV’s are for temporary/seasonal living and kept in RV Parks. This makes them attractive as vacation homes or rental units.

Years in Operation

Patented Technology

Call For a Quote:

(503) 588-6769

Custom Tiny Homes 

Your Portland Tiny Home will be constructed with high quality industry materials. Our proven designs are personally tailored and appointed to suit you. Our Park Models are RVIA Certified and built to ANSI Code A119.5. Let’s get started…..

Our Portland / Salem Models

including Backyard ADUs, ADU Studios, Office Units, Student Housings, & more