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§ 2034.230.Form and content of demand

Title 4. Civil Discovery Act · Chapter 18. Simultaneous Exchange of Expert Witness Information · Article 2. Demand for Exchange of Expert Witness Information · Enacted 2004 · no amendments on record · Last verified July 29, 2026

In one sentenceSection 2034.230 requires a demand for exchange of expert witness information to be in writing, identify the demanding party, and state that it is made under this chapter, and sets the exchange date at 50 days before the initial trial date or 20 days after service of the demand, whichever is closer to trial.

Full Text of § 2034.230

Text sizeJump to: (a) (b)

(a) A demand for an exchange of information concerning expert trial witnesses shall be in writing and shall identify, below the title of the case, the party making the demand. The demand shall state that it is being made under this chapter.
(b) The demand shall specify the date for the exchange of lists of expert trial witnesses, expert witness declarations, and any demanded production of writings. The specified date of exchange shall be 50 days before the initial trial date, or 20 days after service of the demand, whichever is closer to the trial date, unless the court, on motion and a showing of good cause, orders an earlier or later date of exchange.

Plain-English Summary

Once a party decides to demand the expert-witness exchange, this section dictates what the demand document itself has to say. It must be in writing, identify the party making the demand beneath the case title, and expressly state that it is being made under this chapter, so nobody mistakes it for an interrogatory or some other discovery request.

Subdivision (b) is where the demand does its real work: it has to specify the actual date on which the exchange will happen. That date is fixed by the same closer-to-trial logic used elsewhere in the chapter, 50 days before the initial trial date, or 20 days after the demand is served, whichever comes closer to trial. The default is not absolute. A court, on motion and a showing of good cause, can order an earlier or later exchange date than the demand would otherwise set, giving the parties or the court room to adjust the schedule when the standard formula does not fit the case.

Frequently Asked Questions

What must a written demand for exchange of expert witness information state?

It must identify the party making the demand below the case title and state that it is being made under this chapter.

How is the exchange date calculated?

50 days before the initial trial date, or 20 days after service of the demand, whichever is closer to the trial date.

Can the exchange date set by the demand be changed?

Yes. On motion and a showing of good cause, the court may order an earlier or later date of exchange.

Amendment History

(Added by Stats.2004, c. 182 (A.B.3081), § 23, operative July 1, 2005.)

Source & verification. Section text is reproduced verbatim from the West's Annotated California Codes / Thomson Reuters. Enacted by the California Legislature. Last verified July 29, 2026. · Official source
Also known as: ccp 2034.230 exchange date expert witness demand50 days before trial expert exchangeform of demand expert witness information