Typical goods shed at a minor or branchline stn up to the Beeching era, single storied with room for 2 to 4 wagons/vans inside.
I have seen a couple of photos though of (I believe Amberley and one on the L&Y system somewhere) where without any increase in the size of the floor plan a second floor has been added, at Amberley it looks like a warehouse has been stuck on top and the L&Y one appeared to contain offices.
I just wondered how widespread this practice was, baring in mind I'm not talking about the large warhouses at important distribution points, just the smaller facility.
Reason for asking, I'm thinking of building something similar for my layout, 3 or 4 wagon shed, outside transfer to a second line wih two additonal floors, 1st floor as a warehouse and second floor as officies.
Just wondered if anyyone had any pics lying around.