If you're interested in buying a property, but are unsure whether or not it is at risk, you can get a Subsidence Report. If there are any potential risks involved, you can then take any necessary steps. Alternatively, if you already own a property and start to notice signs of subsidence, you can request help from a structural engineer. They will carry out a survey on your house and tell you what the best course of action is. Early signs of subsidence are: cracks in walls (3mm) sticking doors or windows rippling wallpaper