So, call me crazy but I'm starting to work seriously on a 3D map of all my city of Argona (remembering the incredible bridge city of THW, I know I'm not the only one, though ). I'll need basic buildings I can repeat many times, in addition to the unique and specific buildings.
Here's a first residential house.
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Working on a more bigger residence.

By the way, any idea of how many different buildigns I should do to avoid a "too repeated" feeling?