No one wants to borrow more than is necessary, of course, but it can be difficult to predict exactly how much you will need. As well as your property’s purchase price, you need to take into account things like house and contents insurance and relocation costs, as well as transaction fees such as stamp duty and conveyancing. There is a lot of inter-dependent calculations that impact the minimum needed to borrow so whilst you can get some idea from stamp duty calculators the best option is actually to contact a UNO broker who can model your personal situation and make sure all aspects are considered correctly.