Now gluing all the small parts on top. It will be a pain to mask it later, but that's modern Russian vehicles
>>6040710Afaik the only ones that do complete or almost complete (being the second the most common) buildings are miniart and verlinden (in 1:35). But also check other diorama accessories brands as there will be some buildings from others that I didn't list.
But now the bad news:
The architectural side of modeling is 98% done from scratch, either for dioramas or at profesional level.
If you don't care about the subjects like afvs, ships, planes, cars, motorbikes, mechas or figures why the fuck did you even think about wasting time and money on it?
You're shit out of luck in what you're looking for, your best bet is either 3D printing from cad models done by "you" or learn to scratchbuild.
My advice is to either be friends with some architect or interior designer and borrow their CAD file, save it in .stl (not sure how to do it in autocad as buildings aren't usually done as a whole, you will have it easier with some interior designer if they work with rhino or something like that that has 3D volumes) and 3D print it (this whole thing is rather expensive and bothersome). Or just buy some book about modeling dioramas and stuff like that and learn to do the architectural side of that.
I think the best you can do is do them yourself