The California counties which, as of December 2020, mandate some type of e-Filing include:

• Butte County: As of 2017, e-Filing is now mandatory for all civil, probate, juvenile dependency, and family law cases pursuant to Local Rule 21. 

• Contra Costa.E-Filing is now mandatory for most complex civil litigation.

• Fresno County: E-Filing is now mandatory for all civil, family law and probate cases.

• Imperial County: As of January 2020, e-Filing is now mandatory for all civil, probate, family law, family support, small claims and adoptions cases pursuant to Local Rule 2.18.

• Kern County: Pursuant to Local Rule 1.10, e-Filing is now mandatory for all civil, California Environmental Quality Act, Civil writ, and unlawful detainer cases. E-Filing is also mandatory in all family law cases, with some exceptions for cases involving the Domestic Violence Prevention Act, the Elder Abuse and Dependent Adult Civil Protection Act, or an attorney representing a minor in a family law proceeding.

• Los Angeles County: E-filing is mandatory for all limited and unlimited non-complex civil cases, as well as all probate and non-adoption juvenile dependency E-filing is not yet available for complex cases, but is expected to be implemented in 2021, after a specific general order is issued and notice is posted on the court’s website.

• Merced County: Pursuant to Local Rule 2.E., e-Filing is now mandatory for all civil and non-DCSS family law and probate cases.

• Monterey County: Pursuant to Local Rule 1.6, e-Filing is now mandatory in all cases, excepting appellate department cases.

• Orange County: As of January 2013, and pursuant to Local Rules 352 and 01, respectively, all documents filed by attorneys in probate and civil cases must be filed electronically, unless the Court excuses parties from the e-Filing requirements or an exception is specified on the Court’s website.

• San Diego County: San Diego County Superior Court mandates e-Filing for civil class actions, some consolidated and coordinated actions, and actions that are provisionally complex, including Construction Defect, Antitrust/Trade Regulation, Mass Tort, Environmental/Toxic Tort and Securities Litigation cases.

• San Francisco County: Pursuant to Local Rule 2.11, e-Filing is mandatory for all single-assignment cases, complex cases, general civil cases (with the exception of small claims cases), misdemeanor appeals, misdemeanor writs, and ex parte applications involving misdemeanor convictions. Pursuant to Local Rule 14.93, e-Filing is also mandatory for all probate and trust cases. Notwithstanding Local Rules 2.11 and 14.93, the initial pleadings or ex parte petitions, if applicable, must be filed in hard copy. All documents thereafter may be electronically filed.

• San Luis Obispo: As of January 2017, and pursuant to Local Rule 31.06, e-Filing is mandatory for all civil case types, including limited and unlimited cases, small claims cases, probate and guardianship cases, family law cases, family support cases, and adoption and mental health cases.

• San Mateo County: E-filing is mandatory for all civil, complex civil, small claims and unlawful detainer cases. As of January 2020, e-Filing is mandatory for all family law and probate cases. As of June 2020, e-Filing is also mandatory in criminal cases for all documents filed after the initial complaint. E-Filing is governed by Local Rule 2.1.7. 

• Santa Barbara County: As of January 2016, and pursuant to Local Rule 1012, e-Filing is mandatory for all documents presented for filing in all civil cases, including limited, unlimited, complex, small claims, family law and probate cases.

• Santa Clara County: Pursuant to Local Rule 6(B)(1), e-Filing is mandatory for all parties represented by attorneys in all civil cases, including family law cases, juvenile dependency cases and probate cases..

• Santa Cruz County: Pursuant to Local Rule 1.3, e-Filing is required for civil, family, dependency and LPS cases. E-filing is required for appellate cases, except for felony appellate filings. E-Filing is also mandatory in juvenile justice and criminal cases, for all documents filed subsequent to the initial pleading.

• Sonoma County: As of January 2020, and pursuant to Local Rules 18.22-18.23., e-Filing is required for all civil matters, probate matters and family law matters, including Department of Child Support Services cases.

• Stanislaus County: As of January 2020, and pursuant to Local Rule 1.14, e-Filing is mandatory in all civil cases, including limited, unlimited, complex, family law, and probate.

• Sutter County: As of July 2017, and pursuant to Local Rule 2.2, e-Filing is mandatory in all civil cases (except small claims cases), probate cases and family law cases. 
• Yuba County: As of July 2018, e-Filing is mandatory in all probate, family law, juvenile dependency and civil cases, including complex unlimited, limited and small claims cases.

Counties which do not mandate any e-Filing include:

• San Bernardino County: As of December 2020, San Bernardino County still does not mandate any e-filing in any type of case.

Note that in all California superior courts, self-represented litigants are exempt from mandatory e-Filing.California Rule of Court, Rule 2.253 subd. (b)(2). Furthermore, parties facing undue hardship or significant prejudice may apply for an exemption from any mandatory e-Filing. California Rule of Court, Rule 2.253 subd. (b)(4). California Rules of Court 2.250 through 2.261 address e-Filing and e-Service.