How often can you renew a caveat?

Answer 1

My understanding is that a caveat is generally valid for a period of six months unless it is withdrawn by the person entering the caveat (caveator). Before the the six month period expires the caveat must be renewed and will remain in force until it is removed by the caveator or as a result of a successful court action by the executor. In certain circumstances the caveat if constantly renewed can go on indefinitely.

Another Perspective

A caveat in one sense is a formal notice that an interested party files with the proper legal authorities, directing them to refrain from rendering a decision in an action until the party can be heard.

It depends on the nature of the caveat and the jurisdiction. A will caveat is effective for a limited period of time in most jurisdictions and that period varies. A person who files a caveat cannot be allowed to delay adjudication of the case forever.

For a definitive answer you need to check the type of case and the laws in your jurisdiction.