While it is a condition of mortgage agreements that homeowners have buildings insurance, it does not mean that they have to accept their lender's insurance policy. But while homeowners can still shop around for a more competitive deal, many are still lumbered with buildings insurance which is costing them more than it ought. Once you obtain all these information, ask for the same information from other lending companies. In this way, you can start comparing the costs of each loan and decide which one has the best mortgage rate.