The Radon Council advises that all property purchases request a radon screening test to be carried out before exchanging contracts. It is often the case that a prospective purchaser will conduct a damp and timber survey before going ahead with a purchase, and it would be prudent to also conduct a radon test. If the test result is close to or exceeds the Action Level, it may be appropriate to negotiate with the vendor to pay all, or part, of the cost of remediation.