Cal. CIV § 1577

This is the official text of Cal. CIV § 1577, part of California’s Civil Code — covers contracts, property ownership, personal rights, and other general civil obligations between private parties.

Not legal advice. This page reproduces the official text of a government statute for reference only. Laws change, and how a statute applies depends on your specific facts. For advice about your situation, consult a licensed attorney in your state.

Official statutory text

Mistake of fact is a mistake, not caused by the neglect of a legal duty on the part of the person making the mistake, and consisting in:

1. An unconscious ignorance or forgetfulness of a fact past or present, material to the contract; or,

2. Belief in the present existence of a thing material to the contract, which does not exist, or in the past existence of such a thing, which has not existed.

Status: in_force · Read it on the official government site

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About this page: Statute text is reproduced from official government publishers via the Open US Law dataset (Vaquill AI, snapshot v2026.08, CC BY 4.0). Primary legislative text like this is public domain under the government-edicts doctrine (Georgia v. Public.Resource.Org, 2020). We link every section back to its official source so you can verify it independently.