5-yearly maintenance tasks should include:
- Painting external woodwork, iron rainwater goods and window bars.
- Checking safety and integrity of belfries and bell supports (with a structural engineer)
- Arrange inspection and maintenance of boilers and instantaneous water heaters.
- Checking and testing electrical installations and lightning conductors (by qualified electrician)
Note that a qualified professional should inspect and sign off all but very basic repair work, such as attending to cupboard locks and touching up paintwork.