Oldest mention I found was from 2008: http://news.bbc.co.uk/2/hi/europe/7596341.stm http://news.bbc.co.uk/2/hi/europe/7596341.stm After that it seems there has

Oldest mention I found was from 2008: http://news.bbc.co.uk/2/hi/europe/7596341.stm http://news.bbc.co.uk/2/hi/europe/7596341.stm After that it seems there has been quite lot of uptake. But idea was always the same price is token payment, and there is requirement to repair these very old and very dilatated houses.