Houseboats used to be a really cheap way to live, but not anymore, especially on the Thames. Moorings and service charges are ridiculously expensive in London.
But I know a couple of people who have lived on them for years. The downside (as well as the above) is the maintenance and the fact that that they rarely increase in value. It's the lifestyle you do it for. There is often a real sense of community spirit, sometimes communal gardens, drinks on each others roofs... and there's the waking up with mist on the river and ducks and swans paddling past - bliss!
I want one!
Which one would you have?