§ 1697 Contract Modification By Writing
This law says that even if a contract isn’t written down, the people involved can change it in writing later without needing anything new in return, and the old parts are replaced by the new agreement.
Two friends agree to rent a bike for $5 a day. Later they both agree, in a text message, to change the price to $3 a day.
Because the change is in writing and both agree, the new $3 price replaces the old $5 price, even though they didn’t add anything new like extra money or a promise.
AI-generated — May contain errors. Not legal advice. Always verify source.
§ 1697 Contract Modification By Writing
Last verified: January 9, 2026