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San Mateo — Filing of Guardianship Petition

California foreclosure, tax-defaulted, court-ordered and probate-sale law and official procedures — verbatim and citable.

Edition
2026-09-26
Last updated
2026-09-27
Jurisdiction
San Mateo County

San Mateo — Filing of Guardianship Petition

Exceptions & meaning →

Page 1

SUPERIOR COURT OF CALIFORNIA - COUNTY OF SAN MATEO

Filing of Guardianship Petition - Information on Notification Requirements

California Probate Code Sections 1511, 1516, and 1543 require that certain, specific persons and agencies must be notified when a PETITION FOR GUARDIANSHIP is filed.

In order to avoid an unnecessary delay of the scheduled court hearing of the PETITION FOR GUARDIANSHIP that you are filing, the following parties MUST be served by an adult, other than the petitioner(s), in the manner specified with a copy of the:

NOTICE OF HEARING Form Number: GC-020
PETITION FOR APPOINTMENT OF GUARDIAN OF MINOR Form Number: GC-210

1. The proposed ward(s) (child/ren) MUST be personally served if 12 years of age or
older.

2. The birth mother or adoptive mother MUST be personally served.

3. The birth father or adoptive father MUST be personally served.

4. Any person having legal custody of the proposed ward MUST be personally served.

5. The maternal grandparents (mother’s parents) and paternal grandparents (father’s
parents) MUST be served by mail or personally.

6. Any sibling(s) brother(s) or sister(s) who are not a subject of the Petition for
Guardianship and are 12 years of age or older, MUST be served by mail or personally.

7. The Director of the San Mateo County Human Services Agency MUST be served
copies by mail or by delivering copies to the following address:

Sarah Gregg, Supervisor
SMC Children & Family Services
400 Harbor Boulevard, Building B
Belmont, CA 94002

The person who completes the serving of notices MUST complete and file with the court, a PROOF OF SERVICE before or at the hearing, to prove that the above parties were legally served. If you tried to serve those persons and you could not find or serve them or they are no longer living, then you must file a DECLARATION OF DUE DILIGENCE stating why they could not be served with the NOTICE OF HEARING and the PETITION FOR APPOINTMENT OF GUARDIAN FOR MINOR.

PR-20 [Rev. 7/2011] www.sanmateo.courts.ca.gov

Exceptions & meaning →

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