Thanks for the advice and mentioning the Clever Models card range. Go to know they are customizable. In the plan I posted, there are buildings on the edge of the layout that look like partial buildings. I haven't seen any buildings that look like partial buildings for sale. Would any of the Clever Models or others fit this type of footprint?I've built three "shelf" layouts over the years, along the lines of shunting puzzles. With all of them I should have taken more care in track-laying. My view is that you need to be absolutely anal about getting it right, and even then you will still make mistakes. At least I did. Re buildings, I'm a big fan of the Clever Models card range - they are endlessly customisable. I even went to the trouble of cutting their Quonset hut in half when building it, so I could fit both halves in the two spaces I had available. So if you do get it wrong in terms of not allowing enough space for a building, just view it as an opportunity to get a little creative.