Can I get legal guardianship of my sibling under CA guardianship laws

You will need to petition the probate court and request to be the guardian. The court will review your request. They will want to know who you are, what you are about, and why a guardianship is necessary. They will consider the family circumstances, the age of the child, and what is best for the child.

Any individual seeking legal advice for their own situation should retain their own legal counsel as this response provides information that is general in nature and not specific to any person's unique situation. Circular 230 Disclaimer - Advice given in this response cannot be used to eliminate penalties with the IRS or any other governmental agency.