I only have a very small layout 18 metres long consisting of a straight section with a reversing loop at each end, the loops controlled by spring switches. As my Locos are battery powered I don't have to worry about track polarity.
The photo shows my first attempt at a building.
Based roughly on Highley Station less the station masters house.

I bought the cladding and figures the rest being scratch built.
I firstly made a core from PVC foam board then covered it with the cladding, the station veranda is made from sheets of microscopic glass slides and took a few attempts to get it right.
I also made the windows and doors, the only thing remaining is to make up some signage but so far I think it does the job.


