When can i change the locks and do you have to tell the spouse?

You can change the locks on your home at any time, but if you're married, it's generally advisable to inform your spouse, especially if you are still living together or if you share ownership of the property. In some jurisdictions, changing locks without notifying your spouse could be considered a form of marital misconduct or lead to legal complications. If you're in the process of separation or divorce, consult a legal professional for guidance on your rights and responsibilities.