Hm, yes, it should have been a special building instead. This was the first larger building I made and I didn't understood the importance of picking the right template. I also doesn't matter very much for me since I place everything by hand anyway. But yes, my bad. I think it will be even worse to change the template now, right? Any instances of this building people have in their models will probably not stay in the same place.

This looks very nice, but the size is off when used as growable. It covers several more squares than the stated 4x2. Just fyi.