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State Building Code Council advisory group debates 120 vs. 70 sq ft standards for small dwelling units
Summary
The council's IBC Technical Advisory Group spent its Jan. 15 meeting debating whether to align a primary habitable-room minimum at 120 square feet or adopt a 70-square-foot baseline used elsewhere; members agreed to refine language offline and return with diagrams and reconciled drafts. No formal votes were taken.
The State Building Code Council's IBC Technical Advisory Group spent the Jan. 15 meeting hashing out competing proposals over minimum sizes for small dwelling units, including whether to retain a 120-square-foot primary habitable-room standard or move toward a 70-square-foot baseline referenced by the National Healthy Housing Standard.
Micah Chappell, who submitted one of the proposals, told the group he wanted the IBC language to align with recent residential-code changes by keeping a 120-square-foot primary room while preserving a 70-square-foot threshold for defined sleeping units. "We're gonna look at a 120 square foot room and then don't look at other stuff," Micah said, describing an approach intended to avoid reintroducing broader minimums that could conflict with recent IRC changes.
David…
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