Re: lower catherdal ceiling?
Converting the space may depend on the construction of the walls and foundation of the open area. You would have to make sure that they are engineered to support a new second floor; this may require retrofitting posts & beams into the construction. You may need to contact a structural engineer, unless the walls & foundation meet current codes for supporting a second story.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.