Z Scale Cottage
This is a model of a cottage-style house. It has a roughly 20’ by 25’ scale footprint. If you wish to add roof overhangs you can put paper or thin card on the roof. Feel free to customize the sides with paper siding material if that will make it fit better on your model railroad.
I print my models on a filament (FDM) printer. That's what they're designed to be printed on. I printed this structure at 30% infill. Print the structure floor-side down and no supports will be needed.