In 1868, the California Legislature authorized the first of many ad hoc Code Commissions to begin the process of codifying California law. Each Code Commission was a one- or two-year temporary agency which either closed at the end of the authorized period or was reauthorized and rolled over into the next period; thus, in some years there was no Code Commission. The first four codes enacted in 1872 were the Civil Code, the Code of Civil Procedure, the Penal Code, and the Political Code. Statutes that did not fit these categories were simply left uncodified in the California Statutes.

The four original California Codes were not drafted from scratch but were mostly adapted by the Code Commission from codes prepared for the state of New York by the great law reformer David Dudley Field II. As a result of the Gold Rush, many New York lawyers had migrated to California, including Field’s brother, Stephen Johnson Field, who would ultimately serve as California’s fifth Chief Justice before being appointed to the U.S. Supreme Court. The strong New York influence on early California law started with the California Practice Act of 1851 (drafted with the help of Stephen Field), which was directly based upon the New York Code of Civil Procedure of 1850 (the Field Code). In turn, it was the California Practice Act that served as the foundation of the California Code of Civil Procedure. New York never enacted Field’s proposed civil or political codes, and belatedly enacted his proposed penal and criminal procedure codes only after California, but they were the basis of the codes enacted by California in 1872.

As noted above, the initial four codes were not fully comprehensive. As a result, California statutory law became disorganized as uncodified statutes continued to pile up in the California Statutes. After many years of on-and-off Code Commissions, the California Code Commission was finally established as a permanent government agency in 1929. In its first report, the Commission stated: “The California statutory law is in a deplorable condition … law writers and publishers unite in considering it the worst statutory law in the country.” To staff the new permanent incarnation of the Code Commission, the state Legislature simply appointed the Legislative Counsel as the secretary of the Commission. Thus, as a practical matter, most of the real work was performed by the Legislative Counsel’s deputies and then approved by the Code Commissioners.

The Commission spent the next 24 years analyzing the massive body of uncodified law in the California Statutes and drafting almost all the other codes. By 1953, when the Code Commission completed its assigned task and issued its final report on September 1 of that year, 25 Codes were then in existence. That year, the Legislature replaced the Code Commission with the California Law Revision Commission. Since then, the CLRC has been tasked with regularly reviewing the Codes and proposing various amendments to the Legislature. Most of these are simple maintenance amendments to ensure that statutory cross-references are properly updated to add new laws or omit laws which no longer exist.

The newest code is the Family Code, which was split off from the Civil Code in 1994. Although there is a Code of Civil Procedure, there is no Code of Criminal Procedure. Instead, criminal procedure in California is codified in Part 2 of the Penal Code, while Part 1 is devoted to substantive criminal law.

Pursuant to the state constitution, the California State Legislature and the Governor have enacted the California Statutes, which in turn have been codified into the 29 California Codes. The first four codes, enacted in 1872, were the Civil Code, the Code of Civil Procedure, the Penal Code, and the Political Code (which much later would become the Elections Code). However, these did not constitute a complete codification, and statutes on subject matter inappropriate for the four codes were simply not codified. In 1929, the Legislature finally established the California Code Commission as a permanent government agency (it had previously existed only intermittently on an ad hoc temporary basis), and it spent the next thirty years slowly codifying the rest of the California Statutes. Upon completing this task in 1953, the Code Commission was replaced by the California Law Revision Commission.

Although there is a Code of Civil Procedure, there was never a Code of Criminal Procedure; California’s law of criminal procedure is codified in Part 2 of the Penal Code. The newest code is the Family Code, which was split off from the Civil Code in 1994.

The foremost source of state law is the Constitution of California, which like other state constitutions derives its power and legitimacy from the sovereignty of the people. The California Constitution in turn is subordinate to the Constitution of the United States, which is the supreme law of the land.

The Constitution of California is the foremost source of state law. Legislation is enacted within the California Statutes, which in turn have been codified into the 29 California Codes. State agencies promulgate regulations with the California Regulatory Notice Register, which are in turn codified in the California Code of Regulations. California’s legal system is based on common law, which is interpreted by case law through the decisions of the Supreme Court of California, California Courts of Appeal, and Appellate Divisions of the Superior Courts of California, and published in the California Reports, California Appellate Reports, and California Appellate Reports Supplement, respectively (among others). Counties and incorporated cities may promulgate local ordinances which are usually codified in county or city codes, respectively. There are also several sources of persuasive authority, which are not binding authority but are useful to lawyers and judges insofar as they help to clarify the state of the law.