The big challenge is that both buildings are constructed of brick. That is the bad news.
The good news is that they are somewhat modular, and if you are handy with RTV rubber, you can make one master and cast multiple parts. This will work well for the rear walls; the side walls will each have to be one piece.
There is styrene sheet, and I saw someone has a laser cut wood brick product out there. These will work well for the masters. The tough part is the corners, and getting the bricks at the return to both course horizontally and vertically. Both structures are masonry load bearing walls, and have multiple-wythe walls, with deep set windows. Speaking of which, I don't know if the windows are available commercially. I would start with Grandt or Tichy, and don't be afraid at looking at HO or O parts: you will be surprised what you can find.
If you can overcome these hurdles, and get some good plaster parts, a great model will be the result.
Me? I am planning my model of the C&S Leadville roundhouse (which is wood) in styrene.