The Kadett A Caravan was a nice touch.

Thank you. The Kadett A is from Brekina.

Wonder what the damage on the wall was supposed to have been from..

Artillery shell during World War 2.

That's what I thought originally. Guessing it got fixed, somewhat after it went though. Whoever just redid the brickwork, left the outside alone..?

Yep. I actually added the hole with an exacto knife and glued a piece of spare HO scale brick wall behind it. Been learning a lot about kit-bashing. This is what the kit would have looked like had I done it right from the box:\
http://www.myeasypics.com/is.php?i=879565&img=pola188aaa.jpg

Changed up the majority of the front wall for the ground floor. I do however have another copy of the kit, which I built as shown on the box and in the linked image.