Existing buildings that undergo a change of group or occupancy shall comply with this section.

• Exception: Type B dwelling or sleeping units required by Section 1107 of the International Building Code are not required to be provided in existing buildings and facilities undergoing a change of occupancy in conjunction with alterations where the work area is 50 percent or less of the aggregate area of the building.

Where existing buildings undergo a change of group or occupancy any alterations shall comply with Sections 410.6, 410.7 and 410.8 as applicable. Existing buildings that Where existing buildings undergo a change of group or occupancy any alterations shall comply with this sectionSections 410.6, 410.7 and 410.8 as applicable.

• Exception: Type B dwelling or sleeping units required by Section 1107 of the International Building Code are not required to be provided in existing buildings and facilities undergoing a change of occupancy in conjunction with alterations where the work area is 50 percent or less of the aggregate area of the building.