Many of us have at some point toyed with the idea of pooling our resources to buy a holiday home abroad with friends or family. After a few glasses of wine in the throes of a successful trip, it can seem a great idea: half the costs (or less), half the hassle and more than enough weeks a year to use it. What could be better? Well many such daydreams never survive the plane home yet for some co-buying a second home can be an affordable and immensely rewarding way to own abroad.