What is the minimum property value for a mortgage? 10 February 2023 14:21 Updated We do not have a minimum value on our BTL (Buy to Let) mortgages. However the minimum loan size is £45k. Related articles Which postcodes are considered in the North of England? What type of property tenure do you accept? What information do you need from me? Can friends/family help with a deposit? Why do I need a Solicitor for a mortgage? What do they do?