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California Written Discovery: Interrogatories, RFAs, RFPs & Depositions

Master California's discovery tools. From form interrogatories to the 35-special-interrogatory limit, RFAs that can win your case if ignored, and document requests that actually get documents. Know the deadlines, the objections, and when to file a motion to compel.

Updated Jan 2026 ~20 min read CCP 2030-2033

📋 California Discovery Tools: The Complete Picture

TL;DR Bottom Line Quick Summary

California discovery is broad but regulated. You have five main written discovery tools: form interrogatories (unlimited), special interrogatories (35 limit without declaration), requests for production (unlimited), requests for admission (35 limit), and depositions. You can't serve discovery until 10 days after serving the summons and complaint, or when the defendant appears—whichever comes first. Responses are due in 30 days (35 if served by mail). Miss a deadline, and RFAs are deemed admitted. Fail to respond to anything else, and you waive objections.

📚 The Five Discovery Tools

Tool Authority Limit Key Feature
Form Interrogatories CCP 2030.010; DISC-001 No limit Pre-approved questions; can't object to form
Special Interrogatories CCP 2030.030 35 without declaration Custom questions; can exceed 35 with declaration
Requests for Production (RFPs) CCP 2031.010 et seq. No limit Documents, ESI, tangible things, inspections
Requests for Admission (RFAs) CCP 2033.010 et seq. 35 without declaration Deemed admitted if no timely response
Depositions CCP 2025.010 et seq. 10 per side; 7 hours each Live testimony; remote permitted under CRC 3.1010

When Discovery Can Begin

Under CCP 2030.020, there's a hold period before discovery can start:

  • Plaintiff: Cannot serve discovery until 10 days after service of the summons and complaint on the defendant, OR when the defendant appears in the action—whichever occurs first
  • Defendant: May serve discovery at any time after being served or appearing
  • Cross-complainant: Same 10-day hold as plaintiff after service of cross-complaint
[Cite] CCP 2030.020(b) - Discovery Hold Period

"A plaintiff may propound interrogatories to a party... without leave of court at any time 10 days after the service of the summons on, or appearance by, that party, whichever occurs first."

The same timing rule applies to RFPs (CCP 2031.020), RFAs (CCP 2033.020), and other written discovery.

The Proportionality Doctrine

California courts can limit discovery that's disproportionate to the needs of the case. Under CCP 2019.030, courts consider:

  • The importance of the issues at stake
  • The amount in controversy
  • The parties' resources
  • The importance of the discovery in resolving the issues
  • Whether the burden of the discovery outweighs its likely benefit
* Practitioner Insight: Proportionality Is Your Friend

The proportionality doctrine isn't just for defendants trying to avoid production. Plaintiffs can use it too—to argue that defendant's 500-interrogatory set is abusive, or that demanding 10 depositions in a $25,000 case is disproportionate. Frame your discovery objections (and motion opposition) around proportionality, not just burden.

💡 Key Takeaways
  • Wait 10 days: Plaintiffs can't serve discovery until 10 days after service of summons or defendant's appearance
  • Know your limits: 35 special interrogatories and 35 RFAs without a declaration; form interrogatories and RFPs unlimited
  • 30-day response deadline is the baseline; add 5 days for mail service, 2 for electronic
  • RFAs are deadly: Deemed admitted if you miss the deadline—and withdrawal requires court permission
  • Proportionality matters: Courts can and do limit disproportionate discovery

Interrogatories: Form vs. Special

TL;DR Bottom Line Quick Summary

Form interrogatories (DISC-001) are pre-approved by the Judicial Council—you can't object to their form. Special interrogatories let you ask custom questions, but you're limited to 35 without a declaration. To exceed 35, you must include a declaration stating you've made a reasonable inquiry and each question is necessary. Responding parties must answer under oath within 30 days.

📝 Form Interrogatories (DISC-001)

Form interrogatories are standardized questions approved by the Judicial Council. They're organized by category:

Category Numbers Topics Covered
Identity 1.0-2.0 Party information, agent for service
General Background 2.1-2.13 Addresses, education, employment history
Incident 6.1-6.7 Description of incident, location, witnesses
Injuries 6.4-6.7 Medical treatment, providers, lost income
Insurance 4.1-4.2 Coverage information
Damages 8.1-8.8 Property damage, economic losses
Investigation 12.1-12.6 Photographs, diagrams, statements obtained
Contentions 17.1 Facts supporting each denial/affirmative defense
[Tactic] Form Interrogatory 17.1: The Contention Interrogatory

Form interrogatory 17.1 is one of the most powerful discovery tools available. It asks for all facts, witnesses, and documents supporting each denial or affirmative defense in the answer. Many defense counsel object or give evasive responses—but this sets up a strong motion to compel. Use 17.1 in every case.

📋 Special Interrogatories: The 35-Limit Rule

Under CCP 2030.030, you can propound up to 35 special interrogatories without a declaration. The count includes:

  • Each discrete question counts as one interrogatory
  • Subparts that are "reasonably related" count as one interrogatory
  • Subparts that could stand alone as separate questions count separately

Exceeding the 35 Limit

To propound more than 35 special interrogatories, you must include a declaration stating:

  1. You've made a reasonable and good faith inquiry
  2. Each interrogatory is necessary for proper preparation of the case or trial
  3. None of the interrogatories is intended to harass or burden the responding party
!! Red Flag: Subpart Games

Both sides play games with subparts. Propounding parties cram multiple questions into "subparts" to stay under 35. Responding parties object that subparts should be counted separately. Courts have limited patience for both tactics. Draft clear, discrete questions—and object specifically if you receive compound interrogatories masquerading as single questions with subparts.

💬 Responding to Interrogatories

Responses must be served within 30 days of service of the interrogatories (CCP 2030.260). If served by mail, add 5 days. If served electronically, add 2 court days.

Each response must be:

  • Under oath (verified by the party, not just signed by counsel)
  • Complete as to the question asked
  • Based on reasonable inquiry of documents and persons with knowledge

Response Options

Response Type When to Use Requirements
Answer You have responsive information Complete, responsive, verified
Objection Question is objectionable State specific legal ground; preserve by timely response
Objection + Answer Partial objection Object, then answer to extent not objectionable
"Unable to Comply" No responsive information after reasonable inquiry State the efforts made to find information

Requests for Admission: The Deemed Admitted Trap

TL;DR Bottom Line Critical

RFAs are uniquely dangerous: fail to respond timely, and the matters are deemed admitted. Under CCP 2033.280, if no response is served within 30 days (plus extensions for mail/electronic service), the requesting party can move to have the RFAs deemed admitted—and the court shall grant that motion. Withdrawal of deemed admissions requires court permission and a showing that you didn't intend to admit the matter. Don't miss this deadline.

The Deemed Admitted Rule: CCP 2033.280

Unlike other discovery tools, RFAs have automatic consequences for non-response:

  • If no response is served within the deadline, the propounding party may move for an order deeming the matters admitted
  • The court shall grant the motion if the responses weren't served before the hearing
  • Deemed admissions are conclusive for purposes of the pending action
  • They can form the basis for summary judgment
[Cite] CCP 2033.280(b) - Mandatory Deemed Admitted

"If a party to whom requests for admission are directed fails to serve a timely response... the court, on motion, may order that... the matters specified in the requests be deemed admitted."

Despite the "may" language, courts have interpreted this as mandatory when no response is served before the hearing. See Wilcox v. Birtwhistle (1999) 21 Cal.4th 973.

📋 The 35-RFA Limit

Under CCP 2033.030, you can propound up to 35 RFAs without a declaration. This limit includes both:

  • Requests relating to facts
  • Requests relating to the genuineness of documents

To exceed 35, you must include a declaration substantially similar to the special interrogatory declaration, stating that each additional RFA is necessary for proper preparation.

💬 Responding to RFAs

Each RFA must be responded to with one of the following:

Response Effect When to Use
Admit Conclusively establishes the matter Matter is true; saves costs of proof at trial
Deny Puts matter in dispute Matter is genuinely disputed
Lack of Information Treated as denial After reasonable inquiry, unable to admit or deny
Objection Preserves objection; doesn't answer Request is objectionable (but be careful)
!! Red Flag: The Cost of Unreasonable Denial

Under CCP 2033.420, if a party denies an RFA and the propounding party later proves that matter at trial, the court shall award reasonable expenses (including attorney's fees) incurred in making that proof—unless the denial was reasonably based on lack of information or there was good reason for the denial. Don't deny matters you know are true; it will cost your client money at the end of trial.

🔄 Withdrawing Deemed Admissions

If matters are deemed admitted, you can seek relief under CCP 2033.300:

  • File a motion to withdraw or amend the admission
  • Must show the admission was the result of mistake, inadvertence, or excusable neglect
  • Must show withdrawal won't substantially prejudice the requesting party
  • Courts have discretion—but it's an uphill battle
[Tactic] Strategic RFA Use

Use RFAs to narrow issues for trial. Ask defendants to admit the authenticity of key documents, the accuracy of damages calculations, or undisputed facts. Even if they deny, you've set up a cost-of-proof motion under CCP 2033.420 if you prove the matter at trial. RFAs work best when they're genuinely asking about facts the other side should admit.

📂 Requests for Production: Getting Documents

TL;DR Bottom Line Quick Summary

RFPs let you demand documents, ESI, and tangible things—or inspect premises. Unlike interrogatories, there's no numerical limit on RFPs. Under CCP 2031, the responding party must state whether they will comply, produce documents as kept in the ordinary course of business or organized by category, and identify any withheld documents (including privilege log requirements). Response deadline is 30 days, plus extensions for mail or electronic service.

📝 What You Can Request

Under CCP 2031.010, RFPs can demand:

  • Documents: Papers, correspondence, contracts, invoices, reports, notes
  • Electronically Stored Information (ESI): Emails, text messages, databases, social media
  • Tangible things: Physical objects, products, equipment
  • Inspections: Access to property, premises, or things

💬 Responding to RFPs

For each RFP, the responding party must provide a written response stating one of the following:

Response What It Means Requirements
Will Comply Documents will be produced State documents will be produced in full or redacted form
Unable to Comply No responsive documents exist State documents never existed, have been destroyed, or are not in possession
Objection Request is objectionable State specific grounds; respond to extent not objectionable

Document Production Requirements

Under CCP 2031.280, documents must be produced either:

  • As kept in the ordinary course of business: Don't reorganize or rearrange—produce them as they were maintained
  • Organized and labeled by category: Match documents to each specific RFP number
[Tactic] Demand Organization by Category

When producing parties dump thousands of pages organized "as kept in the ordinary course of business," you end up with an unsearchable mess. In your RFPs, specifically demand production "organized and labeled by category corresponding to each request." This forces the responding party to identify which documents respond to which requests—making your review much easier.

📋 Privilege Logs

When documents are withheld on privilege grounds, CCP 2031.240(c) requires a privilege log that identifies:

  • The type of document (letter, memo, email, etc.)
  • The general subject matter
  • The date of the document
  • The author and recipients
  • The specific privilege claimed
!! Red Flag: Inadequate Privilege Logs

Many privilege logs are worthless—generic descriptions like "attorney-client privileged communication" without dates, authors, or subject matter. If you receive an inadequate privilege log, meet and confer and demand compliance. Courts can order production of documents where the privilege log doesn't adequately support the claimed privilege.

💻 ESI-Specific Considerations

For electronically stored information, consider:

  • Format: Specify the format you want (native, PDF, TIFF with load files, etc.)
  • Metadata: Request that metadata be preserved and produced
  • Search terms: Parties often negotiate search terms to narrow ESI productions
  • Cost allocation: Courts can shift costs for disproportionate ESI requests
  • Preservation: Send a litigation hold letter early; spoliation can result in sanctions

🎙 Depositions: Live Testimony

TL;DR Bottom Line Quick Summary

Depositions let you take live testimony under oath before trial. Each side gets 10 depositions without leave of court, and each deposition is limited to 7 hours. Remote depositions are standard practice under CRC 3.1010. Notice requirements vary by type of deponent (party vs. non-party), and subpoenas are required for non-party witnesses. Deposition testimony can be used at trial for impeachment or as substantive evidence under certain circumstances.

📋 Deposition Basics

Element Rule Notes
Number Limit 10 per side Leave of court to exceed; parties can stipulate to more
Duration Limit 7 hours CCP 2025.290; excludes breaks; parties can stipulate to more
Notice to Party 10 days CCP 2025.270; 20 days if out of state; service by any method
Non-Party Deponent Subpoena required Deposition subpoena under CCP 2020.010 et seq.
Remote Depositions Permitted under CRC 3.1010 Physical presence can be demanded with 5 court days' notice

📝 Deposition Notice Requirements

Under CCP 2025.220, the deposition notice must include:

  • The name and address of the deponent (or description if name unknown)
  • The date, time, and place of the deposition
  • Whether the deposition will be recorded by audio or video
  • If remote, the technology to be used and how to participate
  • Any documents the deponent should bring (if party) or subpoena duces tecum attachment (if non-party)
[Cite] CRC 3.1010 - Remote Depositions

"Oral depositions may be taken by telephone, videoconference, or other remote electronic means."

Remote depositions are now standard practice. The court reporter can attend remotely, and the deponent doesn't need to be physically present with the officer when sworn. Any party can demand physical presence by giving 5 court days' written notice under CRC 3.1010(a)(3).

👥 Person Most Qualified (PMQ) Depositions

Under CCP 2025.230, you can notice the deposition of an organization and require it to designate its "person most qualified" to testify on specified topics:

  • Notice must describe with reasonable particularity the matters for examination
  • Organization must designate and produce one or more persons to testify on its behalf
  • Testimony binds the organization—the witness testifies on behalf of the entity
  • If organization fails to prepare its designee, you can move to compel
[Tactic] PMQ Depositions: Be Specific

The more specific your PMQ notice, the harder it is for the organization to produce an unprepared witness. Instead of "policies and procedures," ask about "the specific policy in effect on [date] governing [specific topic], including who drafted it, who approved it, and how it was communicated to employees." Vague topics let organizations designate whoever they want; specific topics require actual preparation.

📄 Deposition Subpoenas for Non-Parties

To depose a non-party witness, you need a deposition subpoena under CCP 2020.010:

  • Subpoena for personal appearance: Requires attendance at deposition
  • Subpoena duces tecum: Requires production of documents at deposition
  • Consumer/employee notice: If seeking consumer or employee records from a third party, notice to the consumer/employee is required under CCP 1985.3/1985.6

Witness fees and mileage must be tendered with the subpoena (CCP 2020.230).

📅 Discovery Timing: Response Deadlines

TL;DR Bottom Line Quick Summary

Base deadline: 30 days from service. Add 5 calendar days if served by mail within California (10 if outside). Add 2 court days if served electronically. The deadline extension applies to the response deadline, not the service date. Miss an RFA deadline, and matters are deemed admitted. Miss any other deadline, and you waive objections.

Response Deadline Chart

Discovery Type Base Deadline + Mail (CA) + Mail (Out of State) + Electronic
Form Interrogatories 30 days 35 days 40 days 32 court days
Special Interrogatories 30 days 35 days 40 days 32 court days
RFAs 30 days 35 days 40 days 32 court days
RFPs 30 days 35 days 40 days 32 court days
Deposition Notice (Party) 10 days 15 days 20 days 12 court days
[Cite] CCP 1013 - Mail Service Extensions

CCP 1013 provides the extensions for service by mail:

  • Within California: Add 5 calendar days
  • Outside California but within the U.S.: Add 10 calendar days
  • Outside the United States: Add 20 calendar days

For electronic service, CCP 1010.6(a)(4)(B) adds 2 court days to any deadline.

📆 Key Discovery Dates Timeline

Event Deadline Authority
Discovery hold (plaintiff) 10 days after service or appearance CCP 2030.020
Discovery cutoff 30 days before trial CCP 2024.020
Expert discovery cutoff 15 days before trial CCP 2024.030
Motion to compel (non-RFA) 45 days after response CCP 2030.300, 2031.310
Motion to compel (RFA) No specific deadline CCP 2033.280
Discovery motion hearing 15 days before discovery cutoff CCP 2024.020
!! Red Flag: The 45-Day Motion Deadline

Under CCP 2030.300 and 2031.310, you must file a motion to compel further responses within 45 days of service of the deficient responses. Miss this deadline, and you waive your right to compel—unless you obtained an extension by agreement. Calendar the 45-day deadline immediately upon receiving responses.

📋 Discovery Cutoff Calculation

The discovery cutoff is 30 days before the initial trial date (CCP 2024.020). Key points:

  • All discovery must be completed by the cutoff—not just served
  • Depositions must occur before the cutoff
  • Responses must be received before the cutoff
  • Discovery motions must be heard at least 15 days before the cutoff
  • Continuances don't automatically extend the discovery cutoff—you must stipulate or move for extension
[Tactic] Calculating Backward from Trial

Work backward from your trial date: Discovery cutoff is 30 days before. Last day to hear a discovery motion is 15 days before cutoff (45 days before trial). To get a motion heard by that date, you need to file and serve 16 court days earlier (plus mail time). If your opponent is stonewalling, start this calculation early—you may have less time than you think.

🚫 Common Objections and When They Apply

TL;DR Bottom Line Quick Summary

Objections must be specific and timely. Boilerplate objections are disfavored and may be waived. The most common valid objections are privilege (attorney-client, work product), relevance, overbreadth, vagueness, and undue burden. For each objection, you must state the specific ground—and you should respond to the extent the discovery is not objectionable. Failure to timely respond waives all objections except privilege.

📋 Common Objection Categories

Objection When Valid When Overruled
Attorney-Client Privilege Confidential communication between attorney and client for legal advice Communication shared with third parties; crime-fraud exception
Work Product Documents prepared in anticipation of litigation; attorney mental impressions Substantial need + inability to obtain equivalent without undue hardship
Relevance Information not reasonably calculated to lead to admissible evidence Broad discovery standard; tangentially related information often discoverable
Overbreadth Request captures far more than relevant information Request can be reasonably interpreted to have limits
Vagueness/Ambiguity Request is genuinely unclear as to what's sought Reasonable interpretation available; meet and confer required
Undue Burden Cost/effort to respond vastly outweighs likely benefit No evidence of actual burden; proportionality not analyzed
Privacy Third-party privacy interests; financial/medical information Protective order addresses concerns; direct relevance to claims
Trade Secret Proprietary business information Protective order with confidentiality tiers

Waiver of Objections

Under CCP 2030.290, 2031.300, and 2033.280, failure to serve timely responses results in waiver of all objections—except for claims of privilege. Key points:

  • Even privilege objections should be asserted timely, but courts are more forgiving
  • Waiver can sometimes be relieved by motion showing substantial justification
  • Courts disfavor waiver arguments when the discovery dispute is substantive
  • Always serve at least a placeholder response to preserve objections
!! Red Flag: Boilerplate Objections

Courts (and opposing counsel) have no patience for boilerplate objections. "Objection: vague, ambiguous, overbroad, unduly burdensome, calls for legal conclusion, attorney-client privilege, work product" copied to every response is not a valid objection—it's a refusal to participate in discovery. Courts can strike such responses and order answers without objections.

💬 Proper Objection Format

A proper objection should:

  1. State the specific objection: Not a list of every possible objection
  2. Explain the basis: Why does this objection apply to this specific request?
  3. Respond subject to objection: If partial response is possible, provide it
  4. Identify withheld information: For privilege, provide a privilege log
📝 Sample Proper Objection Format
RESPONSE TO SPECIAL INTERROGATORY NO. 15: Objection. This interrogatory is overbroad as to time and scope. Defendant's employment history "at any time" is not relevant to the contract dispute at issue, which concerns a single transaction in 2024. The interrogatory also seeks information protected by third-party privacy rights. Subject to and without waiving the foregoing objections, responding party states: [Responsive information limited to relevant time period and subject matter].
* Practitioner Insight: The "Subject to Objection" Response

Always respond "subject to and without waiving" your objections when you can provide any information. This preserves your objection for appeal while showing the court you're participating in discovery. A response that's all objections and no substance is much harder to defend on a motion to compel than one that objects but still provides relevant information.

Discovery Disputes and Motions to Compel

TL;DR Bottom Line Quick Summary

Meet and confer first—it's required. Before filing any discovery motion, you must make a reasonable and good faith attempt to resolve the dispute informally. The motion must include a meet and confer declaration. If you prevail on the motion, the court shall award sanctions unless the opposing party's position was substantially justified. Motion to compel deadline for interrogatories and RFPs is 45 days after service of deficient responses.

🤝 Meet and Confer Requirements

Under CCP 2016.040, the meet and confer effort must be a "reasonable and good faith attempt at an informal resolution." This means:

  • Letter or email: Send a detailed meet and confer letter identifying deficiencies
  • Phone call: An actual conversation, not just voicemails
  • Specificity: Identify each deficient response and what you need
  • Time to respond: Give the other side reasonable time to supplement
  • Good faith: Actually try to resolve the dispute, not just check a box
[Cite] CCP 2016.040 - Meet and Confer Declaration

"A meet and confer declaration in support of a motion shall state facts showing a reasonable and good faith attempt at an informal resolution of each issue presented by the motion."

Courts take this seriously. A declaration that says "I sent a letter and got no response" may be insufficient if you didn't follow up or attempt a phone call. Document your efforts thoroughly.

📋 Types of Discovery Motions

Motion Type When to File Standard
Motion to Compel Initial Responses No response served No showing required; court shall grant
Motion to Compel Further Responses Deficient responses served Show response incomplete, evasive, or objection without merit
Motion to Deem RFAs Admitted No RFA response served Court shall grant if responses not served before hearing
Motion for Protective Order Discovery is oppressive/burdensome Show good cause for protection
Motion to Quash Subpoena Non-party objects to subpoena Subpoena unreasonable or oppressive

💰 Discovery Sanctions

Under CCP 2023.010 and 2023.030, discovery sanctions are designed to compel compliance:

Sanction Type When Imposed Effect
Monetary Sanctions Almost every motion; losing party pays Attorney's fees and costs of bringing motion
Issue Sanctions Repeated failure to comply Designated facts deemed established
Evidence Sanctions Failure to produce; spoliation Evidence excluded; adverse inference
Terminating Sanctions Egregious discovery abuse Dismissal or default judgment
!! Red Flag: Sanctions Are Mandatory

Under CCP 2030.290(c), 2031.300(c), and similar provisions, if you file a motion to compel initial responses and win, the court "shall" impose sanctions on the losing party—unless the court finds substantial justification or other circumstances make sanctions unjust. This isn't discretionary. Budget for sanctions when advising clients about discovery disputes.

📝 Motion to Compel Checklist

[List] Motion to Compel Filing Checklist Printable
  • Confirm 45-day deadline has not passed (for motions re: further responses)
  • Send detailed meet and confer letter identifying each deficiency
  • Attempt phone call to discuss; document the call
  • Allow reasonable time for supplemental responses
  • Draft motion with separate statement (required for further responses)
  • Prepare meet and confer declaration with specific facts
  • Attach copy of discovery requests and responses
  • Include sanctions request with attorney declaration of fees/costs
  • Reserve hearing date; file and serve 16 court days before hearing
  • Confirm hearing is at least 15 days before discovery cutoff
[Tactic] The Separate Statement

For motions to compel further responses, California Rules of Court 3.1345 requires a separate statement. This document lists each request, the response given, and the reason the response is deficient. It's tedious to prepare but essential—courts won't hear your motion without it. Use the separate statement to make your best argument for each disputed item; judges often rule based on this document alone.

Need Help with California Discovery?
Consultation on discovery strategy, motions to compel, or deposition preparation

I'm Sergei Tokmakov (CA Bar #279869), a California attorney who handles civil litigation matters. Whether you need help with a discovery dispute, motion to compel strategy, or deposition preparation, I can help.

Discovery Services

  • Motion to compel drafting
  • Discovery response review
  • Meet and confer strategy
  • Deposition preparation
  • Protective order motions
  • Privilege log review

Consultation Topics

  • Discovery timing and deadlines
  • Objection strategy
  • Proportionality arguments
  • ESI discovery issues
  • Sanctions exposure
  • RFA deemed admitted relief