Rule 23.Written Interrogatories
Group V: Discovery · Last amended October 1, 2013 · Last verified July 14, 2026
Full Text of Rule 23
Comment
Rule 23(b) represents a further restriction on the use of interrogatories than had been imposed under former Superior Court Rule 36. This new limitation is warranted by the adoption of the Automatic Disclosure requirements of Rule 22, which itself tracks in part the provision of Fed. R. Civ. P. 26(a)(1).
Amendment History
Adopted May 22, 2013, eff. October 1, 2013.
Plain-English Summary
Rule 23 governs written interrogatories — questions one party sends another party to answer in writing under oath. A party may serve more than one set, but the combined total may not exceed 25 questions unless the court allows more for good cause, and every subpart or subsidiary question counts toward that limit no matter how the questions are grouped. The interrogatories must carry a specific warning notice, printed in capital or bold type at the top of the first page, telling the recipient to answer each question separately and fully in writing and under oath, to return the original and one copy within 30 days, and that failure to respond can lead to a conditional default.
The party served with interrogatories answers under oath — personally if an individual, or through an officer or agent who can supply all the information available to a corporation, partnership, or association — and must answer each question separately so the final document pairs every question with its answer. If a party objects to a question, it must state the grounds and still answer the questions it does not contest; before either side goes to court over an unresolved objection, counsel must first try in good faith to work it out. If an interrogatory asks for copies of papers or electronically stored information, Rule 23(h) treats that request as a document request under Rule 24. Interrogatories and answers can be used at trial to the same extent as depositions, and neither the questions nor the answers need to be filed with the court unless the court says otherwise.
Frequently Asked Questions
How many interrogatories can a party send under Rule 23?
Up to 25 total, counting subsidiary and subsidiary parts of a question separately, however the questions are grouped or arranged. The court can allow more for good cause after the additional interrogatories have been filed with it.
How long does the responding party have to answer?
30 days after service of the interrogatories, unless the parties agree in writing to extend that time.
What happens if a party objects to a question instead of answering it?
The party must state the grounds for the objection and still answer any questions it does not object to. Before asking the court to rule on an unresolved objection, counsel for both sides must try in good faith to settle it, and the objecting party's counsel is responsible for starting that conversation.
Can interrogatories be used to get copies of documents?
Yes, but Rule 23(h) treats an interrogatory asking for copies of papers, documents, or electronically stored information as a request for production governed by Rule 24 rather than as an ordinary interrogatory.
Do interrogatories and answers need to be filed with the court?
No, not unless the court directs otherwise. They can still be used at trial to the same extent as deposition testimony.