What is habitable space?

Article Type: 
Updated: 
Wednesday, March 23, 2011

Habitable space definition 
In addition, GHI requires habitable space to be constructed with party walls having one-hour fire resistance (usually 5/8" type-X drywall) on the interior exposure, including the attic [IRC §302.1 ]. 3-season sunrooms may not be considered habitable space because their construction does not include a fire-resistant  party wall.