Cal. Codes » Penal Code / PART 2. OF CRIMINAL PROCEDURE / TITLE 12. OF SPECIAL PROCEEDINGS OF A CRIMINAL NATURE / CHAPTER 1. Of the Writ of Habeas Corpus
California Codes

Cal. Penal Code § 1509.1 (2026)

Of the Writ of Habeas Corpus

✓ leginfo export of Sept. 26, 2026 (applied Oct. 1, 2026)
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(a)Either party may appeal the decision of a superior court on an initial petition under Section 1509 to the court of appeal. An appeal shall be taken by filing a notice of appeal in the superior court within 30 days of the court’s decision granting or denying the habeas petition. A successive petition shall not be used as a means of reviewing a denial of habeas relief.

(b)The issues considered on an appeal under subdivision (a) shall be limited to the claims raised in the superior court, except that the court of appeal may also consider a claim of ineffective assistance of trial counsel if the failure of habeas counsel to present that claim to the superior court constituted ineffective assistance. The court of appeal may, if additional findings of fact are required, make a limited remand to the superior court to consider the claim.

(c)The people may appeal the decision of the superior court granting relief on a successive petition. The petitioner may appeal the decision of the superior court denying relief on a successive petition only if the superior court or the court of appeal grants a certificate of appealability. A certificate of appealability may issue under this subdivision only if the petitioner has shown both a substantial claim for relief, which shall be indicated in the certificate, and a substantial claim that the requirements of subdivision (d) of Section 1509 have been met. An appeal under this subdivision shall be taken by filing a notice of appeal in the superior court within 30 days of the court’s decision. The superior court shall grant or deny a certificate of appealability concurrently with a decision denying relief on the petition. The court of appeal shall grant or deny a request for a certificate of appealability within 10 days of an application for a certificate. The jurisdiction of the court of appeal is limited to the claims identified in the certificate and any additional claims added by the court of appeal within 60 days of the notice of appeal. An appeal under this subdivision shall have priority over all other matters and be decided as expeditiously as possible.

Notes of Decisions
Cited in 4 cases (4 in the last 5 years), 2021–2024 · leading case: In re Friend, 489 P.3d 309 (Cal. 2021).
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In re Friend, 489 P.3d 309 (Cal. 2021). · cites it 6× “(Pen. Code, § 1509.1, subd. (a).)3 3 Penal Code section 1509.”
In re Hernandez, No. F076752B (Cal. Ct. App. Sept. 8, 2023). “When apparently informed by a clerk of the Kern County Superior Court that the notice of appeal was improper since the trial court denied the petition for writ of habeas corpus, counsel for appellant (who also represents her on appeal) explained that the case essentially…”
(DP) Vieira v. On Habeas Corpus, No. 1:23-cv-01085 (E.D. Cal. Oct. 11, 2023). “(Pen. Code, § 1509.1, subds. (a) & (c).) This court issued an order on October 11 27, 2021, finding that no certificate of appealability was necessary, and allowing the appeal to proceed.”
In re Hill, No. A166191 (Cal. Ct. App. Aug. 29, 2024). “Accordingly, the court denied these claims and denied claim 16 because it did not find “any error to cumulate.”
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