When we built our condo, I got to design just how I wanted to finish my basement. (Wife had the upstairs). Needless to say, first thing was my gun/loading room. Room is 21' X 11', with a 4'X7' concrete vault in one corner. Built "U" shaped work bench around 3 sides of the room. Dedicated one side to cleaning / repair (and also do my Fly tying there).
One side to load development with my single stage turret press, and last side to production, with my Dillon 550 and Mec 9000. I put in lots of good lighting, and did carpet it.
Cleaning/repair section.
Load development section
Production section