The Roundhouse Foreman has his office in a small building that also has the hostler crew room. It is located in between the coaling tower and steam plant. Like many other structures on my layout, it is sectioned to give the impression of more outside the layout boundaries.
This is the Walthers Industry Office kit, the prototype Milwaukee Road yard office signature structure on the Beer Line. To make it look less identifiable, I modified it by removing the basement level and stairs and adding a rectangular patch over the “diamond” window on the left door.
Figures are from Preiser. I much prefer them as they look very natural.