I've recently moved into a new house that has a detached barn in the back yard. Due to some permitting issues, the county is going to make me put a concrete slab under it, and I thought that this might be a perfect opportunity to turn it into a brew shed. The barn is roughly 24x17 feet, and I'd probably have about half that space for brewing. I use a Blichman Top Tier modular brewing stand. Currently there is no electric run to the barn, but that's something fairly easy to do.
I'm looking for any advice or things to keep in mind for turning it into a brewing shed down the road. I know I'm going to need some sort of vent/hood to get all the steam out. Is it a concern to burn propane in a shed, or would simply leaving the door open suffice? Also, I'm not planning on adding any kind of floor drain, but spills happen.
So I'm looking for any advice from people that have built their own brew shed, or adapted something into one. Things to look out for, or address at this time, etc.