Not sure where Grafenwoehr is in Germany, but in 06 we were in Poppendorf and it was such a neat little town. Like Bob Masters said, the houses over there are designed to last 100 years if not longer. In the "need it now" mentality of the US, people would rather buy a 100 year old house and tear it down to build a new house.
In Poppendorf the people we visited had a house that they built with the help of the town, and it was next to their folks house, whose house was in turn next to their folks house, but since they'd passed on it was given to another relative.
They had a fantastic pub there too! We might have had our fill of bier!
*EDIT* Just checked a map, we were pretty close to you in Poppendorf Heroldsbach. Kinda cool.