Maybe I'd think differently if I actually saw the footprint of a large office building, but I'm thinking... My house has a basement and a garage, which are not

Maybe I'd think differently if I actually saw the footprint of a large office building, but I'm thinking... My house has a basement and a garage, which are not approved as living space, and don't have proper windows or egress. Would it solve the problem to let the interior portions of buildings be designated as storage and utility space? I'd love to have more space for bikes and musical instruments. ;-)