What is a key requirement following a loss according to standard insurance duties?

The key requirement following a loss according to standard insurance duties is to give prompt notice. This obligation is critical because notifying the insurer without delay allows for a timely investigation of the claim. It helps the insurer assess the extent of the damage, verify the occurrence of the loss, and begin the claims process efficiently. Prompt notification facilitates a better evaluation of the claim and can often lead to quicker settlements.

In contrast, notifying the insurer at the policyholder's convenience would not align with the expectation of timeliness that is essential in the insurance claim process. Preparing an inventory of unaffected property, although possibly useful, does not address the immediate need for the insurer to be aware of the loss. Filing a proof of loss before any repair is not a requirement for all types of claims, and it could delay the necessary repairs to the damaged property. Thus, the emphasis on providing prompt notice reflects the importance of communication in the claims process, ensuring that both parties can take the necessary actions following a loss.