
The RSA Heritage Index, issued in the autumn of 2020, provides information on heritage at risk for each local authority. It is possible to quantify each local and unitary authority. For example, in Suffolk there are 8 Grade I, 22 Grade II*, and 3 Grade II buildings at risk; in addition, there are 25 scheduled monuments at risk.

In Cambridgeshire there are 10 Grade I, 12 Grade II*, and 2 Grade II buildings at risk; in addition, there are 56 scheduled monuments at risk.

In Norfolk there are 41 Grade I and 29 Grade II* buildings at risk; in addition, there are 18 scheduled monuments at risk.

In Essex there are 3 Grade I, 19 Grade II*, and 1 Grade II buildings at risk; there are 28 scheduled monuments at risk.

Turning the numbers into a percentage, it is possible to see that Norfolk has a particularly high percentage of Grade I buildings at risk. Cambridgeshire has a high percentage of scheduled monuments at risk.