California Form GC-405(P) is the Letters of Conservatorship (and the closely related GC-405 Letters of Guardianship) issued by the Superior Court that proves a person has legal authority to act for a protected adult or minor. The clerk signs and seals this form only after the judge grants the petition, so the document you file is essentially a draft that the court completes and returns to you as your official badge of authority under Probate Code § 2890.
Roughly one in five California probate filings is rejected on first review for missing checkboxes, wrong case captions, or unsigned oath blocks, and a rejected GC-405 means the conservator or guardian has no legal power until the form is corrected and re-issued. This article walks you through every box on the November 2021 revision so the clerk can issue your Letters on the first try.
Here is what you will learn:
- 📋 What GC-405 does, who must sign it, and which Probate Code sections give it force
- 🗂️ Every document, ID number, and case detail to gather before you open the form
- ✍️ A line-by-line walkthrough of each box, checkbox, and signature line on the form
- 👥 Three named-filer scenarios with full sample entries you can model
- ⚖️ Filing channels, fees, processing times, and the mistakes that void your authority
What the Form Is and Who Must File It
Judicial Council Form GC-405 is the Letters of Conservatorship (or Guardianship) document that the Superior Court clerk signs, seals, and hands back to a newly appointed conservator or guardian. It is the single piece of paper that banks, hospitals, schools, and landlords accept as proof that you may act for the protected person. Without issued Letters, every act you take, signing a lease, withdrawing funds, consenting to surgery, is void under Probate Code § 2310.
The filer is almost always the proposed conservator or guardian named in the petition, working from the Judicial Council probate forms page. After the judge signs the GC-340 Order Appointing Conservator, the petitioner submits GC-405 to the clerk, who issues the Letters once the oath is signed and any required bond is posted. Attorneys, paralegals, and pro se family members all use the same form, and the clerk treats them identically.
Two close cousins share the GC-405 family. GC-405(P) covers conservatorships, while GC-405 covers guardianships of a minor. Both follow the same structure, but the powers boxes differ, conservatorships allow for limited conservatorship over a developmentally disabled adult, while guardianships always cover a minor under 18. The court issues separate Letters for the Person, the Estate, or both, and you must check the right box or your authority will be limited to whichever box you marked.
Before You Start: Documents and Information You Need
Gather these items before you open the form. Missing any one of them sends you back to the clerk’s window for a second trip, and in many counties the clerk will not even accept the packet for filing.
- Case number from the petition. This is the number assigned when you filed Form GC-310, and it must match exactly on every page.
- Full legal name of the protected person. Use the spelling on their birth certificate or government ID, because the clerk cross-checks it against the petition.
- Full legal name of the proposed conservator or guardian. Spell it as it appears on your driver’s license, or the bank will reject the Letters.
- Court branch and address. California has 58 county Superior Courts, and each has its own probate department, find yours through the court locator.
- Signed GC-340 Order or proposed order. The clerk issues Letters only after the judge has signed the appointment order.
- Bond information. If the judge required a bond under Probate Code § 2320, have the surety company name and bond number ready.
- Form GC-348 Duties of Conservator. Most counties require it filed alongside GC-405.
- Filing fee or fee waiver. The current first-paper fee is roughly $435, or file Form FW-001 to request a waiver.
- Notary or court clerk access. The oath on page 2 must be sworn before a notary or the clerk, not signed at home.
- Photo ID. The notary or clerk will refuse to administer the oath without it.
Where to Get the Form and How to Access It
The official, current version of GC-405 lives on the Judicial Council forms library, which posts the November 1, 2021 revision as a fillable PDF. Always download fresh, because counties reject older revisions, and the form footer carries the revision date the clerk checks. Print on plain white 8.5 x 11 paper, single-sided, because double-sided printing jams older clerk scanners in some counties.
You may also access the form through your county’s self-help center, such as the Los Angeles Superior Court probate self-help page, the San Diego Superior Court probate page, or the Orange County probate self-help site. These mirrors sometimes include county-specific cover sheets, so check the local rules before you print.
If you are e-filing, log into your county’s e-filing portal, often File & ServeXpress or Odyssey eFileCA, upload the completed PDF, and pay through the portal. The portal returns a stamped, conformed copy you can save as proof of filing under California Rules of Court Rule 2.259.
Step-by-Step: How to Fill Out Form GC-405 Line by Line
The form has two pages. Page 1 is the case caption and powers section the petitioner fills in. Page 2 is the oath and clerk’s certification the conservator signs and the clerk completes. Every box matters, so move through them in order.
Attorney or Party Without Attorney Box (Top-Left)
This top-left block asks for the name, State Bar number, address, phone, and email of the person filing the form. Write the proposed conservator’s name and contact information if filing pro se, or the attorney’s full bar information if represented. Janet Morales, 1422 Oak Street, Pasadena, CA 91106, (626) 555-0142, janet.m@email.com shows what a pro se filer enters.
If you have a P.O. Box, list it on the second address line and add a physical address if the court requires service of process. Skip the State Bar number entirely if you are not a lawyer, leaving it blank rather than writing N/A or none. The most common mistake here is using a workplace address that later changes, which causes you to miss notices about accountings and reviews. A misconception filers carry into this box is that the address only matters for mail, in fact, the court uses it as the official service address for the entire case under Code of Civil Procedure § 1013.
Superior Court of California, County of ___
This line names the court branch hearing the case. Write the county in the blank, then fill in the street address, mailing address, city and zip, and branch name in the boxes below. Los Angeles goes in the county line for a Stanley Mosk Courthouse filing, with 111 N. Hill Street, Los Angeles, CA 90012 in the address blocks.
If the case was transferred between branches, use the current branch, not the original. The mistake here is writing the county where the protected person lives instead of the county where the case is filed, which can happen when a conservator moves the protected person mid-case. The consequence is that the clerk will reject the form because the caption no longer matches the docket. A misconception is that the form follows the protected person, in reality, jurisdiction stays with the original court unless formally transferred under Probate Code § 2215.
Conservatorship/Guardianship of (Name) Box
This caption box names the protected person, called the conservatee or ward. Write the full legal name in all caps, last name first, exactly as it appears on the petition. MORALES, ROBERT JAMES is the proper format for an adult father in a conservatorship.
If the protected person uses a different name day-to-day, write the legal name here and note the alias only if the petition included an also known as line. The mistake is using a nickname like Bob instead of Robert, which breaks the chain of identification across the case. The consequence is that banks may refuse to honor the Letters because the name does not match the protected person’s account records. A misconception is that the conservatee signs this caption, they do not, the petitioner fills it in.
Case Number Box (Top-Right)
The case number sits in the top-right block of every California Judicial Council form. Copy it exactly from the file-stamped petition, including any letter prefix the county uses. 24STPB04217 is a typical Los Angeles probate case number, while 30-2024-01234567-PR-CP-CJC is the Orange County format.
If you are filing the very first paper in a brand-new case, leave the box blank, the clerk will assign and stamp the number when you file. The mistake is writing the petition number on a related family-law file by accident, which sends the form to the wrong department. The consequence is that your Letters never get issued because the probate clerk has no matching docket. A misconception is that the case number changes when a successor conservator is appointed, it does not, the same number follows the case for life.
Box 1: Type of Letters Checkboxes
Box 1 lets you tell the clerk what kind of Letters to issue. The choices include Conservatorship of the Person, Conservatorship of the Estate, Guardianship of the Person, Guardianship of the Estate, and Limited Conservatorship of the Person or Estate. Check every box that matches the judge’s order on GC-340.
If the judge appointed you over both the person and the estate, check both boxes. The mistake is checking only Person when the order also covers the Estate, which leaves you with no authority to manage bank accounts. The consequence is that you must file a new petition and pay another filing fee to add estate authority. A misconception is that limited conservatorship is a lesser form of regular conservatorship, in fact, it is a distinct legal status under Probate Code § 1801(d) reserved for adults with developmental disabilities.
Box 2: Appointment Information
Box 2 names the conservator or guardian and the date of appointment. Write the full legal name on the line, then the date the judge signed the order in MM/DD/YYYY format. Janet Morales and 03/14/2026 are typical entries for a daughter appointed conservator of her father.
If multiple co-conservators were appointed, list each name separated by and, and check whether they must act jointly or may act independently per the order. The mistake here is writing the hearing date instead of the order date, which differ when the judge takes the matter under submission. The consequence is that the Letters reflect the wrong start date and may complicate later accountings. A misconception is that appointment is effective on the hearing date, it is effective only when the judge signs the order and the clerk issues the Letters under Probate Code § 2310.
Box 3: Powers Granted (Conservator/Guardian of the Estate)
Box 3 appears on Letters of the Estate and lists any limited or expanded powers the judge granted under Probate Code § 2590. Check the box that says powers are listed in the attached order, or write the specific powers on the lines provided. Power to sell real property at 822 Elm Avenue, Pasadena, per Order dated 03/14/2026 is a sample entry for an expanded power.
If the order grants no special powers, leave the lines blank and check the box stating powers are limited to those granted by statute. The mistake is paraphrasing the order’s language instead of quoting it, which creates ambiguity when a title company reads the Letters. The consequence is that escrow may refuse to close on a sale because the Letters do not clearly grant the power. A misconception is that a conservator of the estate has all powers automatically, in fact, many actions, like selling real estate, require specific court authorization under Probate Code § 2540.
Box 4: Limited Conservatorship Powers (If Applicable)
Box 4 only applies in limited conservatorships of a developmentally disabled adult. The seven statutory powers, residence, access to records, contracts, marriage consent, medical consent, education, and social/sexual relationships, are listed here, and you check only the ones the judge granted. Power to fix residence and power to consent to medical treatment are the most common.
If the judge did not grant a particular power, leave it unchecked, even if you think the conservatee needs it. The mistake is checking all seven powers because they appear on the form, which exceeds the judge’s order. The consequence is that the Letters are void as to the unauthorized powers, and any act you take under them is unauthorized under Probate Code § 2351.5. A misconception is that limited conservators decide what powers they need, the judge decides, based on a Regional Center assessment.
Box 5: Expiration or Special Provisions
Box 5 captures any expiration date, restriction, or special provision the judge included in the order. Most general conservatorships do not expire, but temporary conservatorships under Form GC-150 expire after 30 to 60 days. Write Letters expire 05/13/2026 or leave blank for permanent appointments.
If the order includes a bond requirement that must be satisfied before Letters issue, note it here. The mistake is leaving Box 5 blank when a temporary order has a hard expiration date, which lets you act on expired Letters without realizing it. The consequence is personal liability for any acts taken after expiration. A misconception is that temporary Letters automatically renew, they do not, you must file a new petition before the expiration date under Probate Code § 2257.
Affirmation/Oath Section (Page 2)
Page 2 begins with the conservator’s or guardian’s affirmation or oath of office. You swear to perform the duties of the office according to law. Sign in the presence of a notary or court clerk, then date the signature in MM/DD/YYYY format.
If you are a non-citizen or have a religious objection, choose affirmation instead of oath, both are legally equivalent under Code of Civil Procedure § 2015.5. The mistake is signing at home before a non-California notary, which most clerks reject, sign at the clerk’s window or in front of a California notary. The consequence is that the clerk will refuse to issue Letters until you re-sign in proper form. A misconception is that the oath is a formality, in reality, it is a sworn statement that exposes you to perjury liability if you violate fiduciary duties.
Clerk’s Certification Block
The bottom of page 2 contains the clerk’s certification that Letters were issued. The clerk fills in the issue date, signs, and applies the court seal. Do not write in this block, leave it entirely blank.
If you receive Letters back without a seal, return them immediately, an unsealed Letter is not valid under Government Code § 68150. The mistake is photocopying unsigned, unsealed Letters and presenting them to a bank, which will refuse to act. The consequence is wasted trips and delayed access to the conservatee’s assets. A misconception is that any court clerk in California can certify Letters, only the clerk of the issuing county may sign and seal them.
Three Filled-Out Examples Using Real Scenarios
Scenario 1: Janet Morales, Daughter Conservator of Father with Dementia
Janet’s 78-year-old father Robert was diagnosed with advanced dementia, and she filed GC-310 in Los Angeles Superior Court. After the hearing on March 14, 2026, the judge appointed her conservator of both the Person and the Estate, requiring a $50,000 bond.
| Form Section | What Janet Enters |
|---|---|
| Attorney/Party box | Janet Morales, 1422 Oak Street, Pasadena, CA 91106 |
| County | Los Angeles |
| Caption | MORALES, ROBERT JAMES |
| Case number | 24STPB04217 |
| Box 1 | Checks Conservator of the Person and Conservator of the Estate |
| Box 2 | Janet Morales, appointed 03/14/2026 |
| Box 3 | Powers limited to those granted by statute |
| Box 5 | Bond of $50,000 filed 03/20/2026 |
| Oath | Signed before LA County clerk on 03/22/2026 |
Scenario 2: David Chen, Guardian of Niece After Sister’s Death
David’s sister died, leaving her 8-year-old daughter Mei. David filed GC-210 in Alameda County, and the judge appointed him guardian of the person on April 2, 2026, with no bond required.
| Form Section | What David Enters |
|---|---|
| Attorney/Party box | David Chen, 88 Lakeshore Ave, Oakland, CA 94610 |
| County | Alameda |
| Caption | CHEN, MEI LIN (minor) |
| Case number | RP26-987654 |
| Box 1 | Checks Guardian of the Person only |
| Box 2 | David Chen, appointed 04/02/2026 |
| Box 3 | Left blank (no estate) |
| Box 5 | Letters expire when ward turns 18 on 06/15/2035 |
| Oath | Signed before Alameda County clerk on 04/05/2026 |
Scenario 3: Maria Ruiz, Limited Conservator of Adult Son
Maria’s 22-year-old son Carlos has Down syndrome and aged out of her parental authority. She filed GC-310 in Orange County, and on May 1, 2026, the judge granted limited conservatorship of the person with four of the seven statutory powers.
| Form Section | What Maria Enters |
|---|---|
| Attorney/Party box | Maria Ruiz, 305 Pine Court, Anaheim, CA 92805 |
| County | Orange |
| Caption | RUIZ, CARLOS ANTONIO |
| Case number | 30-2026-01234567-PR-CP-CJC |
| Box 1 | Checks Limited Conservator of the Person |
| Box 2 | Maria Ruiz, appointed 05/01/2026 |
| Box 4 | Checks residence, medical consent, education, contracts |
| Box 5 | Annual review required per PC § 1850 |
| Oath | Signed before California notary on 05/04/2026 |
How to File the Completed Form
You may file GC-405 in person, by mail, or through e-filing in counties that offer it. In person, take the form, the GC-340 order, the GC-348 Duties, proof of bond if required, and the filing fee to the probate clerk’s window. The clerk reviews the packet, administers the oath, signs and seals the Letters, and hands you certified copies, usually for an extra $50.50 per certified copy under Government Code § 70626.
By mail, send the same packet plus a self-addressed stamped envelope to the probate clerk at the courthouse address listed on the court locator. Include a check payable to Clerk of the Superior Court for the filing fee and certified-copy fees, mailed filings take 2 to 4 weeks in most counties. Always keep a complete copy of the packet and the certified mail receipt as proof of filing.
For e-filing, log into your county’s portal, Odyssey eFileCA for most counties or LA Court Connect in Los Angeles, upload the signed PDF, and pay by credit card or e-check. The portal returns a file-stamped, conformed copy within 1 to 3 business days under California Rules of Court Rule 2.259, which serves as proof of filing. Save the receipt email and the conformed PDF in a dedicated case folder.
The first-paper filing fee is currently $435 in most California counties, set by Government Code § 70602.5. If you cannot afford the fee, file Form FW-001 with proof of public benefits or low income, the court rules within 5 court days.
What Happens After You File
Once the clerk issues Letters, you receive certified copies stamped with the court seal and signed by the clerk. Order at least three certified copies, banks, brokerages, and the IRS each demand their own original. Each certified copy is admissible as proof of authority for one year from the issue date in most institutions, though the Letters themselves do not expire unless Box 5 says so.
The court then schedules a first review hearing under Probate Code § 1850, usually 6 months after appointment, and biennial reviews after that. A court investigator interviews the conservatee and inspects the residence, then files a confidential report. If problems surface, the court may modify or terminate the conservatorship.
Within 90 days of issuance, the conservator of the estate must file an Inventory and Appraisal on Form DE-160 listing every asset, with non-cash assets valued by a court-appointed probate referee. Missing this deadline triggers a clerk’s notice and possible removal.
After one year, and every two years thereafter, the conservator of the estate files an accounting on Form GC-400/GC-405. Failure to account is grounds for surcharge against the conservator’s bond and personal liability for losses.
Mistakes to Avoid When Filling Out the Form
- Using an old form revision. The clerk rejects pre-2021 versions because the powers checkboxes have changed.
- Wrong case number. The form goes to the wrong department and never reaches your judge.
- Mismatched name spellings. Banks refuse to honor Letters when names differ from the petition.
- Checking too many powers boxes. You exceed the judge’s order, voiding unauthorized acts.
- Leaving Box 1 unchecked. The clerk cannot issue Letters without knowing the type.
- Signing the oath at home. The clerk requires sworn signature at the window or before a California notary.
- Forgetting the bond. The clerk holds Letters until proof of bond is filed.
- Skipping GC-348 Duties. Most counties refuse the packet without it.
- Wrong county. You must file in the county where the petition was heard, not where you live.
- Missing the filing fee. The clerk returns the packet unfiled with a fee notice.
- Filing before the order is signed. The clerk cannot issue Letters until the judge signs GC-340.
- Failing to order certified copies. Plain copies have no legal effect at banks or hospitals.
Dos and Don’ts
- Do download the latest form from the Judicial Council site every time, because revisions appear without notice.
- Do order at least three certified copies at filing, since each costs only $50.50 but a return trip costs hours.
- Do match every name and date to the petition exactly, because the clerk cross-checks every field.
- Do sign the oath in front of the clerk or California notary, because home signatures are routinely rejected.
- Do keep a digital copy of the conformed Letters, because banks often demand color scans.
- Do calendar the first review hearing under Probate Code § 1850, because missing it triggers court inquiry.
- Don’t check powers boxes the judge did not grant, because acts beyond the order are void.
- Don’t photocopy unsealed Letters, because they have no legal force.
- Don’t use nicknames in the caption, because banks reject mismatched names.
- Don’t mail the only signed original, because lost mail means filing the case again.
- Don’t ignore bond requirements, because the clerk holds Letters until bond posts.
- Don’t assume Letters never expire, because temporary and limited Letters often do.
Pros and Cons of Filing on Your Own vs. With Help
| Pro Se Filing | With an Attorney |
|---|---|
| Saves $3,000 to $8,000 in legal fees | Attorney catches form errors before filing |
| You learn the system for future filings | Attorney handles court appearances |
| No scheduling conflicts with counsel | Attorney negotiates bond reductions |
| Direct contact with court self-help | Attorney drafts complex powers language |
| Faster decisions on small estates | Attorney represents you at review hearings |
| Pro Se Cons | Attorney Cons |
|---|---|
| Higher rejection rate at clerk’s window | Costs $3,000 to $8,000+ in fees |
| No legal advice on powers scope | Slower communication on simple questions |
| Risk of personal liability for errors | Less hands-on learning for the filer |
| Time off work for court visits | Attorney calendars may delay filings |
| Stress of self-representation | Possible billing disputes |
Comparing Letters Forms
| Form | Purpose |
|---|---|
| GC-405(P) | Letters of Conservatorship over an adult |
| GC-405 | Letters of Guardianship over a minor |
| GC-150 | Letters of Temporary Conservatorship/Guardianship |
| DE-150 | Letters Testamentary or of Administration in probate of a decedent |
Key Entities and Statutes
The Judicial Council of California drafts and revises GC-405 under Government Code § 68511. The Superior Court clerk in each county issues the Letters under Probate Code § 2891, and a court investigator under Probate Code § 1454 follows up to protect the conservatee.
For limited conservatorships, California’s 21 Regional Centers under the Department of Developmental Services prepare the assessment that drives Box 4. The California Probate Referees Association appraises non-cash assets, and the State Bar of California regulates attorneys who file these forms. Together, these agencies form the network that makes GC-405 enforceable statewide.
Recap of Rulings That Shape GC-405
In Conservatorship of Wendland (2001) 26 Cal.4th 519, the California Supreme Court held that a conservator needs clear and convincing evidence before withdrawing life support, narrowing the medical-consent power in Box 4. The ruling means conservators cannot rely on Letters alone for end-of-life decisions, they need a separate court order.
In Conservatorship of O.B. (2020) 9 Cal.5th 989, the court reaffirmed that clear and convincing evidence applies on appeal of limited-conservatorship findings, raising the bar for proving statutory powers under Probate Code § 1801. Filers should expect closer judicial scrutiny of every powers checkbox in Box 4.
The 2023 LPS-Conservatorship reforms in SB 43 expanded grave disability to include severe substance use disorder, increasing the volume of GC-405 filings statewide. Counties have rolled out the change on different timelines, so check your local probate department before filing.
FAQs
Do I file GC-405 before or after the judge signs the order?
No. File it after the judge signs GC-340, because the clerk cannot issue Letters until an appointing order exists in the file.
Do I write my maiden name or married name in the caption?
Yes, use the name on your current government ID, since banks and hospitals match Letters to the ID you present, not to historical names.
Can I sign the oath at home before a notary?
Yes, but only before a California-commissioned notary, because out-of-state notarizations are routinely rejected by California probate clerks.
Do Letters of Conservatorship ever expire?
No, general conservatorship Letters do not expire, but temporary Letters under GC-150 and Letters with Box 5 expiration dates do.
Do I need to check every box in Box 4 of a limited conservatorship?
No. Check only the powers the judge granted in the order, because checking extras voids your authority as to those unauthorized powers.
Can I file GC-405 online in every California county?
No, e-filing is mandatory in some counties like Orange and San Diego, optional in others, and unavailable in a few rural counties, check your local court rules.
How many certified copies should I order?
Yes, order at least three certified copies, because banks, brokerages, and the IRS each demand a separate original sealed by the clerk.
Do I list co-conservators on the same form?
Yes. List both names in Box 2 separated by and, and note whether the order requires joint or independent action.
Can I act as conservator before Letters are issued?
No, any act before issuance is void under Probate Code § 2310, exposing you to personal liability for unauthorized actions.
Do I need a bond if the conservatee has no assets?
No, the judge may waive bond when the estate is empty, but you still need bond for any future income or settlements received during the conservatorship.
Can I e-file GC-405 without an attorney?
Yes, pro se filers may use Odyssey eFileCA and most county portals, though some courts charge a small e-filing service fee on top of the regular fee.
Do I write the case number if it is a brand-new filing?
No, leave the case number box blank for the very first paper, because the clerk assigns the number when the petition is filed.
Can I change the powers on Letters after they are issued?
Yes, but only by filing a new petition to modify under Probate Code § 2351, the clerk cannot edit issued Letters on request.
Do I need to refile GC-405 when a successor conservator is appointed?
Yes. A successor must file a new GC-405 with their own oath, because Letters are personal to the named conservator and cannot be transferred.
Related reading
- How to Fill Out California Form GC-140 (w/Examples) + FAQs
- How to Fill Out California Form GC-320 (w/Examples) + FAQs
- How to Fill Out California Form GC-330 (w/Examples) + FAQs
- How to Fill Out California Form GC-340 (w/Examples) + FAQs
- How to Fill Out California Form GC-501 (w/Examples) + FAQs
- How to Fill Out California Form GC-385 (w/Examples) + FAQs
- How to Fill Out California Form GC-200 (w/Examples) + FAQs