It doesn’t directly cost more to insure a Grade II listed building; the same factors will be used to determine the premium you pay as are used for a non-listed building. However, because it is usually more expensive to rebuild listed properties, the sum insured is likely to be higher, which can affect the premium you pay. Some insurers will ask to see a professional rebuilding cost survey to ensure the sum insured is adequate and takes into consideration any special features, materials used, professional fees, and other factors. This will also help you avoid the risk of being underinsured.