Second hand property is normally sold on an "as is" basis. The property is sold and delivered to the purchaser in such physical condition as at the time the agreement is signed. It should be noted that sale on an "as is" basis does not protect the vendor from failure to disclose the existence of unauthorised alterations or structures affecting the property. Unless the purchaser accepts such unauthorised structures/alterations, the purchaser may challenge the title of the property on this basis.