13 An innovative aspect of the financing structure is that AGP has retained the risk associated with potential changes in the value of the property at the end of the contract term. To reduce the cost of the Home Office's annual payment to AGP, the deal was constructed such that £100 million of debt is not repaid over the contract life. Instead it will either be paid off at the end of the contract if the Home Office chooses to buy the building (at the lower of market value or £137.5 million) or renewed if the Home Office does not take up this option. AGP are therefore retaining the risk that the market value of the site will not fall below £100 million in 29 years time and the Home Office has flexibility over its accommodation options at the end of the contract.