California CodesCivil CodeDivision 3 - OBLIGATIONSPart 2 - CONTRACTSTitle 1 - NATURE OF A CONTRACTChapter 1 - Definition§ 1549§ 1549A contract is an agreement to do or not to do a certain thing.Cite this sectionCal. Civ. Code § 1549 (2026)Copyhttps://ca.codecond.com/codes/civ/division-3-obligations/part-2-contracts/title-1-nature-of-a-contract/chapter-1-definition/section-1549CopyOther sections in Chapter 1 - Definition§ 1549§ 1550§ 1550.5§ 1550 →