Well (not a law student) TGC at the very least would not let us use the Mac Donald's sign in the model. I no because I had a tiny name on my speed camera (barely visible), but TGC would not accept the model until I took it off.
Myself I like to make my own shape of building and then add textures that may have been photographed. The model may have been based on a particular building but it would not be the same.
I should imagine that this would be OK or surely TGC would have something to say about it, after all they don't want to get into trouble either.
If you think about it though, you would think that say Mac Donald's and other business's would want people modeling there shops and putting them in games, imagine coming across said Mac Donald's after a grueling couple of hours in the game, it might make you think, wow I could really go for a Big Mack right now. It could be a great boost in business.
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