If you make a 6 foot tall character and stand under an awning, you might feel like you need to duck.
Now that I think about it, at 6'3", I do that myself.
I literally have to duck to get through the doorway into my bedroom.
It sucks living in a house built by short people. (my grand parents built the house I'm currently living in)
None of the doors have the same measurements...
So, in game...
I do think that the scale of the buildings might be off a little on the small side though.
But, after 15 years, I hardly notice any more.