Interesting concept, not sure it will work.
In Germany, there is an acute shortage of housing in urban areas. Many people are looking for a new apartment for almost 5 years.
If you are interessted you i have a newspaper article in German but Google Translate is not so bad from German to English
http://www.tagesspiegel.de/politik/eine-million-wohnungen-zu-wenig-gebaut-der-wohnungsmangel-erreicht-die-mittelschicht/20021944.html
Greetings Hannes