Ceiling height questions

[jjonas (Jeffrey Jonas)]

@ndegaris

2021 International Residential Code (IRC) - CHAPTER 3 BUILDING PLANNING - R305.1 Minimum height. (iccsafe.org)

Thanks for the link, Neil, but I have to ask… are you certain this is the same reference that Todd was referencing?
It wouldn’t surprise me, (and is very common), if the OP has a different source that contradicts the source you posted.

Finished basement ceiling height confirmation

I think this is what you are looking for… # 305.1.1 Basements. Portions of basements that do not contain habitable space or hallways shall have a ceiling height of not less than 6 feet 8 inches (2032 mm). Exceptions: At beams, girders, ducts or other obstructions, the ceiling height shall be not less than 6 feet 4 inches (1931 mm) from the finished floor. Habitable spaces created in existing basements shall be permitted to have ceiling heights of not less than 6 feet 8 inches (2032 …