Motion to Modify Sentence in California: Petitions and Resentencing

A motion to modify a sentence in California is not one procedure but several, and the pathway that fits your case depends on what you were convicted of, when you were sentenced, and whether the law lets you file the petition yourself or requires the court, the prosecutor, or the California Department of Corrections and Rehabilitation (CDCR) to start the process. Picking the wrong route, or assuming you can petition when only an agency can, is where most requests fail before they’re even considered.

Below are the main routes to a reduced sentence, who can trigger each one, and what the court weighs before granting relief.

Recall and Resentencing Under Penal Code 1172.1

Penal Code 1172.1 is the broadest resentencing tool in California, and it comes with a catch that surprises almost everyone: the defendant has no right to file. The statute explicitly says a defendant is not entitled to petition for relief, and the court has no obligation to respond if one is filed anyway.¹

Resentencing under this section can only be initiated in three ways. The court can act on its own within 120 days of the original commitment date. The court can act at any time if sentencing laws have changed through legislation or case law since the original sentence. Or certain agencies can recommend resentencing at any time, including the CDCR secretary, the Board of Parole Hearings, the county jail administrator, the district attorney, or the Attorney General.¹

You aren’t powerless. Defendants and their attorneys frequently write to CDCR, the district attorney, or the sentencing court itself asking one of these authorized parties to initiate the process. A well-documented letter laying out rehabilitation, changed circumstances, and the legal basis for a reduced sentence can prompt action. The statute just means no one is required to act.

When the process does move forward, PC 1172.1 creates a presumption in favor of reducing the sentence. The court can only overcome that presumption by finding the defendant currently poses an unreasonable risk of danger to public safety.¹ The court weighs:

Disciplinary and rehabilitation record in custody, including participation in educational, vocational, and substance abuse programs.
Age, time served, and physical condition, and whether these have reduced the risk of future violence.
Whether continued incarceration still serves the interest of justice, including any evidence of constitutional violations at the original proceedings.
Psychological, physical, or childhood trauma, intimate partner violence, or human trafficking that contributed to the offense.
Whether the defendant was a youth at the time of the offense.

The new sentence cannot be greater than the original, and the court must apply any current sentencing rules that would reduce it or expand judicial discretion.¹

One more thing to know: if you write to the court under this section and are ignored or denied, that decision is generally not appealable. Because you had no statutory right to file, the court’s refusal doesn’t affect your substantial rights on appeal.

Proposition 47: Felonies Now Charged as Misdemeanors

Proposition 47, passed in 2014, reclassified several nonviolent felonies as misdemeanors, and unlike PC 1172.1, this pathway lets you file your own petition. If you were convicted of an eligible felony that would now be a misdemeanor, you can petition the sentencing court to recall the sentence and resentence you.²

Eligible offenses include shoplifting, petty theft, receiving stolen property valued under $950, forging checks under $950, and certain drug possession offenses. If you’ve already finished the sentence, you can instead apply to have the felony redesignated as a misdemeanor on your record.²

The original filing deadline was November 4, 2022. Late petitions are still accepted on a showing of good cause, such as not knowing about the law or lacking access to legal resources.³

The court can deny a Prop 47 petition only if resentencing would pose an unreasonable risk of danger to public safety, looking at criminal history, injury to victims, disciplinary record, and other relevant evidence. Prior convictions for certain serious offenses, including sexually violent crimes and offenses requiring sex offender registration, disqualify you entirely.²

Felony Murder Resentencing Under Penal Code 1172.6

Changes to California’s murder laws effective January 1, 2019, narrowed when a person can be convicted of murder under the felony murder rule or the natural and probable consequences doctrine. If you were convicted under one of those theories and could not be convicted today under the revised law, you can petition to have the conviction vacated and be resentenced on any remaining charges.⁴

The petition goes to the sentencing court and must be served on the district attorney and on the trial attorney (or the public defender’s office). It must include a declaration of eligibility, the case number and year of conviction, and a statement about whether you want appointed counsel.⁴

The prosecutor then has 60 days to respond, and you have 30 days after that to reply. The court holds a hearing to decide whether you’ve made a prima facie case. If you clear that bar, the court issues an order to show cause and holds an evidentiary hearing within 60 days. At the evidentiary hearing, the prosecution must prove beyond a reasonable doubt that you’re not entitled to relief.⁴ That burden on the prosecution is a real advantage for petitioners who get past the prima facie stage.

Three Strikes Reform Act Resentencing

The Three Strikes Reform Act of 2012 (Proposition 36) changed the law so that a life sentence is generally reserved for cases where the third strike is a serious or violent felony. If you’re serving an indeterminate life sentence because your third strike was neither, you can petition under Penal Code 1170.126.⁵

The original two-year filing window closed in November 2014, but late petitions are allowed on a showing of good cause. Certain offenses disqualify you, including some drug offenses involving large quantities and crimes involving firearms or sexual offenses. If the court finds you eligible, it must resentence you unless doing so would pose an unreasonable risk of danger to public safety, judged against your criminal history, disciplinary record, rehabilitation efforts, and any other relevant evidence.⁵

Resentencing for Military Veterans

Penal Code 1170.91 gives current or former U.S. military members a dedicated resentencing route. If you’re serving a felony sentence and suffer from a service-connected condition such as PTSD, traumatic brain injury, sexual trauma, substance abuse, or another mental health problem, and that condition was not considered as a mitigating factor at your original sentencing, you can petition.⁶

The petition goes to the sentencing court, which must hold a public hearing with at least 15 days’ notice to the prosecution, defense, and any victims. If you meet the criteria, the court can reduce your sentence, or with agreement from both you and the district attorney, vacate the conviction and enter judgment on a lesser offense. Any resentencing must credit time served and cannot exceed the original sentence.⁶

Invalid Prior Prison Term Enhancements

Before 2020, California courts routinely added one-year enhancements for each prior prison term under former Penal Code 667.5(b). Legislation effective January 1, 2020, eliminated most of these, and Penal Code 1172.75 declared any such enhancement imposed before that date legally invalid, except those based on prior sexually violent offenses.⁷

This one doesn’t run on defendant petitions. CDCR and county jail administrators are responsible for identifying people currently serving sentences that include these invalid enhancements and forwarding their information to the sentencing court. The court then reviews the judgment, confirms the enhancement, recalls the sentence, and resentences. The resulting sentence must be lesser unless the court finds by clear and convincing evidence that a lesser sentence would endanger public safety.⁷

If you think your sentence includes one of these enhancements and CDCR hasn’t flagged your case yet, an attorney letter or a letter to the court raising the issue can help move things along.

Clerical Errors Are Not Sentence Modifications

If the written record of your sentence doesn’t match what the judge actually said in court, that’s a clerical error, and California courts have inherent authority to correct it at any time through a nunc pro tunc order. Common examples are the clerk recording the wrong sentence length or the wrong penal code section on the abstract of judgment. A clerical error is not a judicial error. If the judge miscalculated the sentence or misapplied the law, the remedy is an appeal, not a motion to correct the record.

How to File When You Can Petition

For the pathways where defendants can file directly (Prop 47, PC 1172.6, PC 1170.126, PC 1170.91), the mechanics follow a similar pattern, with details set by each statute.

Gather Your Case Information

You’ll need your full name as it appears in court records, your case number, date of conviction, the penal code sections you were convicted under, and the name and location of the sentencing court. If you’re incarcerated, your prison counselor or the facility’s law library can help you find these.

Draft the Petition to the Right Statute

Each statute has its own content requirements. PC 1172.6 requires a declaration of eligibility, the case number and year of conviction, and a statement about appointed counsel.⁴ A Prop 47 petition should identify the specific offense and explain why it qualifies for reclassification. There’s no single statewide Judicial Council form that covers every kind of resentencing petition, so check the California Courts website for any available forms and read the statute for what your petition must contain.⁸

File the original with the clerk of the superior court that imposed your sentence. Keep a copy, and prepare another for service.

Serve the Prosecution

Serve a copy on the district attorney’s office that prosecuted the case. Under PC 1172.6, you must also serve the trial attorney or the public defender’s office.⁴ Service is usually by mail. The person who mails the documents (not a party to the case) signs a proof of service form, which you then file with the court.

Ask for Appointed Counsel

Several of these statutes let you request an attorney if you can’t afford one. Under PC 1172.6, the court must appoint counsel once it receives a facially sufficient petition that requests it.⁴ Given how technical this area is, asking for counsel when the option exists is almost always the right call.

After You File

The prosecution gets time to respond, and the specific window depends on the statute. Under PC 1172.6, the prosecutor has 60 days and you have 30 days to reply.⁴ Other statutes vary, but the general pattern is the same: the court reviews the petition, weighs the prosecution’s position, and decides whether to hold a hearing.

At the hearing, the judge evaluates the petition against the statutory criteria. For most resentencing routes, the core question is whether releasing you or reducing your sentence would pose an unreasonable risk of danger to public safety. Evidence of rehabilitation, good conduct in custody, program completion, and community support all support your case.

Victims Have a Right to Participate

Under Marsy’s Law, victims have a constitutional right to reasonable notice of post-conviction proceedings and the right to be heard at sentencing and resentencing hearings on request.⁹ Victims can submit written statements or speak in person about the impact of the crime. Their input doesn’t automatically block resentencing, but judges take it seriously, and the veteran resentencing statute expressly preserves Marsy’s Law rights.⁶

If the Court Denies Your Petition

Whether you can appeal depends on which statute you used. Defendant-initiated denials under PC 1172.6, PC 1170.126, or PC 1170.18 are generally appealable because you have a statutory right to petition. Under PC 1172.1, the court’s refusal to act on an informal request doesn’t affect your substantial rights and isn’t appealable.¹

Look closely at whether the denial was with or without prejudice. A denial without prejudice under PC 1172.6, for instance, may let you refile once you fix the deficiency the court identified. Talking to an attorney before you refile or appeal is worth doing; the procedural rules for each pathway are unforgiving, and a botched second filing can foreclose relief you might otherwise have won.

1
California Legislative Information. California Penal Code – Section 1172.1
2
California Legislative Information. California Penal Code – Section 1170.18
3
Judicial Branch of California. Proposition 47 Frequently Asked Questions
4
California Legislative Information. California Penal Code – Section 1172.6
5
California Legislative Information. California Penal Code – Section 1170.126
6
California Legislative Information. California Penal Code – Section 1170.91
7
California Legislative Information. California Penal Code – Section 1172.75
8
Judicial Branch of California. Forms and Rules
9
Justia Law. California Constitution – Article I Section 28