I had a plan a few years ago to build a one off workshop about 2 foot long with bricked up rear windows and 6 large front windows. It was to hold a range of working Wilesco steam powered machines, driven via a Wilesco steam plant outside. I had all the steam units ready to go, but plans change and I sold off all the units I had.
This is a collection of parts I bought new from Pendle Valley to make my one off workshop. It will produce a building about 2 foot long and would make a great addition to any 16mm railway.
Because it is just a pile of basic parts, a certain level of skill and ability will be needed to turn it into a building. It should also be noted that the metal windows are a little bigger than the cast openings, so the openings will need to be made a little wider. If you'd rather not have the rear windows 'blocked up' as I intended, I'm sure Pendle Valley would sell you some extra window frames.