What determines building size?

Great work at the mod kit. It is dazzling what van be done with it :slight_smile: May we see many mods.

Looking at the for example the saltmine mod, what determines the final building size ? Say i’d want to make a ‘large salt mine’ with twice the footprint in the world. Resizing the /buildings/something/colliders does not seem to determine the actual object size in the world. Is this locked into the .isasset file somehow ? - or am i missing a footprint property somewhere.