SundayShunter posted:A lack of space is merely a challenge to the imagination.
With respect, get away from the usual notions of what constitutes a layout - i.e. a Basement Empire!! Here in the UK we are very space-starved:- a population 1/6 that of the USA, but in a Country only 1/38th the size - yeah most of us have rather small houses by US standards, & basements are very rare. We have learned to overcome such problems, & it isn't always by dropping down to the smaller scales.
For your inspiration, here's an American outline, O Scale layout, built here in England, depicting part of Laramie engine terminal, Wyoming, total length, just 12ft long.
https://laramieengineterminal.com/track-plan/
Many might dismiss it as just a diorama, & wonder if it might not be boring compared to a Basement Empire. But - it gives a chance for those massive American steamers to turn a wheel, & if the Basement Empire ain't ever going to happen, then what would you rather have - Something, or Nothing..??
From Laramie, let me endorse the idea! Beautiful little plan.