At least 7 feet in any direction.
Building regulations attic bedrooms.
Space regulations are often a deal breaker for many homeowners.
Openings for ventilation having a least dimension of not less than 1 16 inch 1 6 mm and not more than inch 6 4 mm shall be permitted.
Many older homes simply do not have the right types of attics to construe this space.
To satisfy building code you need to have enough space and the right kind of space to meet these following regulations.
To satisfy building codes you need to have enough space in your planned attic conversion to meet the following regulations.
70 square feet or more of floor space.
Building code requirements for bedrooms by nathalie mornu updated april 12 2018 as long as half of the ceiling is 7 feet tall the height restrictions for a bedroom are met.