So....it is still possible to re-produce.
Check out Walmart photo prints. Photo poster prints run $9 to $19 depending on size needed for each segment. Each segment (building side (4), roof (2), roof ends(2) ..plus) would need to be printed to scale. After all your efforts you might incur costs of $100 +.
Some folks would say..." buy one with the rust, scratches and dings". I did my own attempt but was not satisfied with the results. It's on the "back burner" for now. I cleaned up a "rusty" one instead.
Best regards