Grade I listed St Mary's has been the parish church of Chaddesden since at least 1347 AD. The chancel of the present building dates from that period, with the nave, aisles and tower being later additions.
In the Victorian era the church building was refurbished, with alterations to the height and pitch of the roof, and in the Edwardian era, there was further work with additional wood panelling and a reredos added to the chancel.
The project will focus on replacing the roof slates over the aisles and the nave and repairing the lead on the tower roof. It includes improving the rainwater goods to protect the new roofs.