This guide provides practical advice to anyone who is involved in the buying and selling of homes in areas affected by radon. It explains in simple terms what radon is, the health risks, where it is found, how to measure it and practical methods for reducing the risk from radon. It gives a common-sense approach to addressing radon during a property transaction, including information on a ""radon retention"" or bond whereby a small sum of the purchase money is withheld to pay for remedial works should they be needed. The guide was written mainly for solicitors, conveyancers, surveyors and estate agents, although it will also be of interest to buyers and sellers. Its message is that although radon is important, dealing with it should not prevent or delay property transactions.