Probate in St. Louis County, Missouri: 2026 Guide

This guide is for educational purposes only and is not legal advice. Laws change frequently — verify current requirements with the St. Louis County probate court or an attorney.

Last updated: February 15, 2026

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Overview

St. Louis County is located in Missouri with a population of approximately 992,929. The St. Louis County Probate Court (Probate Division of the Circuit Court) handles all probate and estate matters for decedents who were domiciled in the county at the time of death.

Missouri probate is governed by Title XXXI of the Missouri Revised Statutes (Chapters 470-475). The process begins with filing a Petition for Letters Testamentary (if there is a will) or Petition for Letters of Administration (if there is no will) to admit the will and appoint a personal representative. The court then issues Letters Testamentary for testate estates or Letters of Administration for intestate estates.

For smaller estates, Missouri offers a Small Estate Affidavit procedure if the entire estate value (less liens and encumbrances) does not exceed $40,000. This process is faster and less expensive than full probate.

Missouri law sets statutory minimum fees for attorneys and personal representatives based on a percentage of the estate's value (e.g., 5% on the first $5,000, 4% on the next $20,000, etc.), though additional fees may be allowed for extraordinary services.

This guide provides an informational overview of the St. Louis County probate process. It is not legal advice and is not a substitute for consulting a qualified attorney. Laws and local procedures may change — verify current requirements with the court.

Courthouse Information

St. Louis County Probate Court

Probate matters in St. Louis County are handled at the St. Louis County Courts Building.

Address: 105 South Central Avenue, Clayton, MO 63105

Phone: 314-615-8029 (Probate Division)

Hours: Monday through Friday, 8:00 AM to 5:00 PM

The Probate Division is located on the 5th floor. It handles decedent estates, guardianships, conservatorships, and mental health proceedings. The Honorable Nicole S. Zellweger serves as Circuit Judge for Division 5 (Probate).

Parking and Access

Public parking is available in the garage adjacent to the courthouse (entrance on Carondelet Ave) and at metered street spots nearby. Security screening is required for entry; cell phones are generally permitted but must be silenced in courtrooms.

Filing Process

Step 1: Determine If Probate Is Necessary

Before filing, assess whether formal probate is required:

  • Small Estate Affidavit: If the estate is valued at $40,000 or less (less liens/encumbrances), you may file an affidavit 30 days after death to transfer assets without full probate.
  • Refusal of Letters: For surviving spouses or unmarried minor children, the court may "refuse" letters if the estate is small (statutory allowances apply), effectively closing it immediately.
  • Trust administration: Assets held in a living trust generally do not require probate.

Step 2: File the Petition

If formal probate is needed, file a Petition for Letters Testamentary or Petition for Letters of Administration with the St. Louis County Probate Court. Include:

  • Application for Letters
  • Original will and codicils (if any)
  • Certified death certificate
  • Filing fee deposit (typically $175-$225 depending on estate type)
  • List of heirs and interested parties

Note: Attorneys are required to e-file documents via the Missouri eFiling System. Self-represented litigants may file in person.

Step 3: Provide Notice

After filing, you must:

  • Mail notice of the hearing to all heirs, beneficiaries, and interested parties.
  • Publish notice in a newspaper of general circulation in St. Louis County (e.g., St. Louis Countian) for four consecutive weeks.

Step 4: Attend the Hearing

The court will review the petition. If approved, the judge issues Letters Testamentary or Letters of Administration, granting the personal representative authority to act.

Step 5: Administer the Estate

After receiving Letters, the personal representative must:

  • Publish notice to creditors (if not already done) — creditors have 6 months from the first date of publication to file claims.
  • Inventory and appraise all estate assets within 30 days of appointment.
  • Pay valid creditor claims and estate expenses.
  • File federal and state tax returns as needed.
  • Distribute assets to beneficiaries.
  • File a Statement of Account and Petition for Distribution to close the estate.

Local Requirements

St. Louis County-Specific Procedures

  • E-filing: Mandatory for all attorneys via the Missouri Courts eFiling system.
  • Bond requirements: A bond is typically required for personal representatives unless waived by the will or all distributees.
  • Local court rules: St. Louis County (21st Judicial Circuit) has specific local rules regarding probate forms and hearings.
  • Publication: Notice must be published in a newspaper of general circulation in St. Louis County for four consecutive weeks.

Consult the St. Louis County Probate Court website for the most current local rules and administrative orders.

Timeline & Fees

Filing Fees (St. Louis County)

  • Full Estate Deposit: approximately $175-$225 (varies by estate value)
  • Small Estate Affidavit: approximately $65-$105 (plus publication if required)
  • Will Contest: approximately $145
  • Certified copies: approximately $1.50 per page + certification fee
  • Publication costs: approximately $150-$300 (paid directly to newspaper)

Missouri law sets a statutory fee schedule for attorneys and personal representatives:

  • 5% on the first $5,000
  • 4% on the next $20,000
  • 3% on the next $75,000
  • 2.75% on the next $300,000
  • 2.5% on the next $600,000
  • 2% on amounts over $1 million

Payment Methods

The court accepts cash, checks, money orders, and credit/debit cards (convenience fees apply).

Estimated Timelines

  • Simple estates: 6-12 months
  • Average estates: 9-18 months
  • Complex or contested estates: 18 months to 2+ years

The 6-month creditor claim period (starting from first publication) is a primary factor in the timeline, as the estate generally cannot be closed until this period expires.

Local Resources

St. Louis County Court Resources

Publication

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County Forms

Small Estate Affidavit Packet

Forms and instructions for filing a small estate affidavit (assets <$40k).

Petition for Letters

Standard petition to open a full decedent's estate.

Frequently Asked Questions

Where do I file for probate in St. Louis County?
File at the St. Louis County Probate Court, 105 South Central Avenue, 5th Floor, Clayton, MO 63105. Attorneys must file electronically.
How much does probate cost in St. Louis County?
Filing fees typically range from $175 to $225 to open an estate, plus publication costs ($150-$300). Attorney fees are often based on a statutory percentage of the estate value.
Can I avoid probate in St. Louis County with a small estate?
Yes. If the estate is valued at $40,000 or less (excluding liens), you can file a Small Estate Affidavit 30 days after death to transfer assets without full probate.
How long does probate take in St. Louis County?
A simple estate typically takes 6-12 months. The process includes a mandatory 6-month waiting period for creditor claims.
Do I need an attorney for probate in St. Louis County?
While not strictly required for all small estates, Missouri law generally requires an attorney for full probate administration because the personal representative is representing the interests of others (heirs/creditors).
What is the deadline to file for probate in Missouri?
Generally, a will must be presented and probate opened within one year of the decedent's death.

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Informational guidance only — not legal advice

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Probate laws and local court rules in St. Louis County, Missouri may change without notice. Consult a qualified attorney for advice specific to your situation. SwiftProbate is not a law firm and does not provide legal representation.