@ rik4000: please have a look: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=519694392&tscn=1442540681

If all else fails just create your own theme using the building themes mod, then you can pick and chose what building you want. To be honest tho i cant say ive had the issue you're talking about, as without using the theme they all seem to grow for me.

Is It necessary to have all the buildings from the pack? I mean that Im only interested in using these 3 story buildings. If im using the theme they wont grow unless I have every building. I get that. But I dont use the theme and when I zone, I cant get any type of 3 story buildings to grow. Any help?

I think Boformer has to add it to the theme, but these can still grow if you tick the 'Allow buildings which are not in any theme' box

So this is automatically added to the UK themed collection right?