Another reason this HUD-approved document caught my eye is because of the 400 square footage footprint. On May 4th, 2022 ICC published new Model Legislation For Tiny Houses that was written by THIA and ICC to promote compliance to IRC codes and the two ICC/MBI standards 1200 and 1205.
This was published during the time that THIA and ICC were jointly fighting the ASTM Tiny House Committee from being approved.
What I never agreed with was the footnote about tiny homes and the HUD code and the 320 square foot print as stated;
” 1 Tiny houses on wheels with a permanent chassis over 320 square feet are subject to the Manufactured Home Construction and Safety Standards administered by the US. Department of Housing and Urban Development. Where these requirements apply, a manufacturer may opt-out if they then follow requirements equivalent to those contained in a model building code. ”
