Main area is 24 x 34, with 14 foot ceilings. Bump out in back is 8 x 18, with an 8 foot ceiling. That area will be where the compressor, generator, blast cabinet, and welding booth will go.
Attaching it to the house would have created a morass of cost and permitting paperwork that I didn't want to get into. It will have a covered walkway to the house.