A quick browse along the river Thames and in [taginfo][1] has found some tags that might be relavent: relevant: building=ship building=boat building=floating building=house (or similar) + floating=yes houseboat=yes [1]: http://taginfo.openstreetmap.org/

A quick browse along the river Thames and in [taginfo][1] has found some tags that might be relavent: building=ship building=boat building=floating building=house (or similar) + floating=yes houseboat=yes [1]: http://taginfo.openstreetmap.org/