Start with the OPW’s flood maps and check the property’s location, access roads and nearby watercourses, while remembering that online maps may not show every local risk. Ask the seller or estate agent about previous flooding, and consider a survey that specifically examines flood exposure, drainage and signs of past water damage. You should also check whether buildings insurance is available on suitable terms, as this may affect your mortgage and ownership costs. For a detailed assessment, speak to a qualified surveyor, your insurer and the relevant local authority.