Custom Tiny Homes, Park Models,
and ADU Studios
RESIDENTIAL
ADU / GUEST HOUSE
MODELS
ACCESSORY STRUCTURE
STUDIO / OFFICE / SELF STORAGE
MODELS
COMMERCIAL / SPECIALTY
CUSTOMIZED
MODELS
RECREATIONAL (RV)
PARK MODELS –
CURRENTLY NOT AVAILABLE

20 Twenty SMI builds Custom Accessory Dwelling Units (ADU’s), Accessory Structures, Tiny Homes & Park Models in Salem & Portland areas. 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
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Residential
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Accessory Structure
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Commercial & Specialty
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RV Park Model & Tiny Home
Structures Built In Factory Delivered On Skids Or Chassis
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…..