I have bought a new house but think the survey was wrong, who can I sue?

‘Buyer beware’ is the maxim which applies when buying a property, but if you have engaged a surveyor to inspect a property and report upon it for you then, depending upon on the nature of the defect(s) and the type of survey which you obtained, you may be entitled to redress against the surveyor. It is much less common for there to be redress against the seller, unless they have deliberately concealed or otherwise misled you about the condition of the property.