The 45-day deadline to compel further responses: what starts it, and who can extend it

This is the deadline that ends discovery disputes without anyone arguing the merits. It is short, it is easy to compute wrong in the direction that hurts, and unlike most civil deadlines there is no relief provision sitting behind it. The Legislature took the discretion away on purpose.

Two things make it dangerous. The clock starts on a document you are still reading, and the extension you are entitled to is small enough that people skip it and then run out of room.

What actually starts the clock

Service of the verified response. Verification is not a formality here, it is the trigger.

CCP 2030.300(c). The inspection demand and requests for admission versions read the same way, with the party labels changed. CCP 2031.310(c), 2033.290(c).

Two consequences worth separating. A supplemental verified response starts a new 45 days, which is the one part of this statute that runs in your favour: if the responding party serves an amended verified response, you get a fresh window as to that response. And an unverified response does not start the clock at all. In Golf & Tennis Pro Shop, 84 Cal.App.5th 127, the Court of Appeal held that service of a combination of unverified substantive responses and objections did not begin the 45-day period, because verification of that hybrid was required first.

The extension nobody counts

45 days is the base. The service method adds to it, and the two devices add different units.

Electronic service adds two court days to the period, CCP 1010.6(a)(3)(B). Service by mail adds five calendar days where both the place of mailing and the place of address are in California, ten calendar days if either is outside California but within the United States, and twenty if either is outside the United States. Overnight delivery and facsimile each add two court days. CCP 1013.

Golf & Tennis Pro Shop applied this arithmetic directly, and described the deadline for an electronically served verified response as 45 calendar days plus 2 court days. That the mail extension reaches discovery deadlines at all comes from California Accounts, Inc. v. Superior Court (1975) 50 Cal.App.3d 483, which treated a discovery response as a notice or other paper within CCP 1013.

Mixing the units is where this goes wrong. Forty-five calendar days plus two court days is not forty-seven days, and it is not forty-seven court days. It is a calendar count, then a court-day count from that date, with court holidays in the way.

The only way to move the date

A written agreement to a specific later date. The statute names it, and it is the entire list.

All three sections permit the propounding and responding parties to agree in writing to "any specific later date." Lincolnshire Condominium, Ltd. v. Superior Court (1984) 158 Cal.App.3d 524 confirmed that a valid written agreement preserves the court's authority to rule after the base period has run. Standon Co. v. Superior Court (1990) 225 Cal.App.3d 898 is the other side of the same coin: absent such an agreement, the motion is untimely.

Two words do the work, and both get missed. "Writing," which rules out the phone call where opposing counsel said take your time. And "specific later date," which rules out the thing people actually say, that they will not oppose on timeliness while the parties keep talking.

Ask, and expect to get it. Extensions on this deadline are routinely given and the professional norm is to give them. Unless there is a real reason to refuse, or the matter is contentious enough that the reason is obvious, grant the extension when it is requested. Making an adversary hearing more adverse buys you nothing. And the practice cuts both ways: an opponent who will not agree to a written extension on a discovery deadline is telling you something useful about how the rest of the case is going to run.

"Jurisdictional," and what that word is doing here

Not fundamental jurisdiction. Something narrower, and for your purposes worse.

Sexton v. Superior Court (1997) 58 Cal.App.4th 1403, 1410 held the time to move to compel production is mandatory and jurisdictional just as it is for interrogatories, then drew the distinction that matters: the limitation is not jurisdictional in the fundamental sense, but is jurisdictional in the sense that it renders the court without authority to rule on the motion other than to deny it.

So the order is not void in the way a judgment without personal jurisdiction is void. The practical effect is the same for you. There is no showing you can make. Diligence, excusable neglect, the other side's stonewalling, and the fact that the responses were plainly deficient are all irrelevant to the date. Sexton also noted that the Legislature deliberately removed the earlier provision giving courts discretion to extend the period, which is why the usual relief arguments have nothing to attach to.

The lineage is Karz v. Karl (1982) 137 Cal.App.3d 637 and Vidal Sassoon, Inc. v. Superior Court (1983) 147 Cal.App.3d 681, both treating an order granting a belated motion as in excess of jurisdiction.

"Notice of this motion is given" is not the same as filing a notice

Serve the whole motion inside the window, not a placeholder.

In Weinstein v. Blumberg (2018) 25 Cal.App.5th 316, the court held a motion to compel further responses was not made until the required supporting papers were served. A notice filed inside the deadline with the supporting papers served well after it was untimely.

That kills the reservation workaround. In counties where a hearing date cannot be obtained quickly, the instinct is to file a notice with a placeholder date and follow with the papers. On this deadline that does not hold the date. Serve the notice, the motion, the meet and confer declaration and the separate statement together, inside the window, and sort the hearing date out afterwards.

What has to be in the motion

Three requirements, and the third one is not the same across the three devices.

A meet and confer declaration. CCP 2016.040 requires a declaration stating facts showing a reasonable and good faith attempt, in person, by telephone, or by videoconference, to informally resolve each issue presented by the motion. Each issue, not the dispute generally. In Obregon v. Superior Court (1998) 67 Cal.App.4th 424 the Court of Appeal affirmed a denial where the effort was a single letter arriving one business day before the filing deadline, with no response to the other side's proposed alternatives.

And since 1 January 2026 the declaration has to say one more thing. CCP 2016.040(b) requires it to state whether the moving party met and conferred, including by electronic communication, regarding retention of a certified shorthand reporter to report the hearing on the motion. The subdivision adds that it does not prevent retaining one. It is a new sentence in a declaration most firms generate from a template, which is exactly the kind of omission that gets raised in an opposition.

A separate statement. California Rules of Court, rule 3.1345(a) requires one for any motion to compel further responses to interrogatories, inspection demands or requests for admission. It is a standalone document, and it has to carry each request in dispute, the response given in full, and the factual and legal reasons why that response is inadequate. Mills v. U.S. Bank (2008) 166 Cal.App.4th 871 upheld a denial where the separate statement did not set out the full responses and the reasons section was too confusing to serve its purpose. Rule 3.1345(b) lists exactly two circumstances in which no separate statement is required: where no response was provided at all, 3.1345(b)(1), and where the court has allowed a concise outline in its place, 3.1345(b)(2). See also CCP 2031.310(b)(3), and In re Marriage of Moore (2024) 102 Cal.App.5th 1275 treated the grant of a motion as an exercise of that discretion even without express prior permission. Do not rely on that. Ask first or file the separate statement.

Good cause, but only for documents. CCP 2031.310(b)(1) requires the moving party to set forth specific facts showing good cause justifying the discovery sought by the demand. There is no equivalent affirmative showing for interrogatories or requests for admission. Sinaiko Healthcare Consulting, Inc. v. Pacific Healthcare Consultants (2007) 148 Cal.App.4th 390 lays out the framework.

Make sure it is the right motion

If nothing was served, this is not your statute and you are not on a 45-day clock.

The 45-day waiver attaches to a motion to compel a further response, meaning a response was served and you say it is inadequate. Where the responding party served nothing at all, the motion is to compel a response in the first instance under CCP 2030.290, 2031.300 or 2033.280, and those sections carry no 45-day limit. Late responses also waive objections under the same sections, which is usually the more valuable point. Rule 3.1345(b)(1) also excuses the separate statement on that motion, because there is no response to set out.

No 45-day limit is not no limit. The outer boundary is the discovery motion cutoff, 15 days before the initial trial date under CCP 2024.020(a), and Pelton-Shepherd Industries, Inc. v. Delta Packaging Products, Inc. (2008) 165 Cal.App.4th 1568 holds that a discovery motion must be heard on or before that date. Heard, not filed. In a county where discovery motions set out two or three months, that is the deadline you are actually working to.

A third variant catches people out. Where the response promised production, agreed to comply, and then no documents came, the motion is to compel compliance with the statement of compliance under CCP 2031.320, not a motion for a further response. Reading a failure to produce as a deficient response and filing under 2031.310 is how a motion arrives with the wrong standard, the wrong deadline, and a separate statement it did not need.

The IDC problem, stated plainly

Where a department requires an informal discovery conference first, the requirement and the deadline can collide, and the deadline wins.

CCP 2016.080, which gave informal discovery conferences a statewide statutory footing, was repealed operative 1 January 2023. What remains is a patchwork of local rules and individual department standing orders. Los Angeles Superior Court Local Rule 3.26 and its appendix are the most cited example.

There is no statewide statutory tolling of the 45 days for an IDC. Some standing orders address the interaction and some do not. A rule requiring an IDC before a motion will be heard does not by itself extend a statutory waiver deadline, and the order that would extend it is a local one you have to actually read.

What to expect in practice, and San Diego is the clearest case. The court expects you to have met and conferred before you bring an issue to a judge, and that expectation is strongest on discovery. Ask to set a motion to compel and the judge will often want an IDC first, calendar permitting. Treat that as how the department prefers to handle the dispute rather than as an obstacle to route around. Expect a version of the same instinct in most counties.

The variation worth knowing about, because it surprises people: an ex parte application to shorten time can come out the other side as an IDC. You go in asking for a hearing date and leave with a conference instead. That is a good outcome if the point was to get in front of the judge quickly. It is a bad one if you were relying on the ex parte to protect a deadline, because a conference is not a motion heard.

So the sequence is: get the written extension to a specific later date first, then request the IDC. If the other side will not sign one, file the motion inside the window and request the IDC in parallel. A motion filed and then continued is recoverable. A waiver is not.

The local layer

Everything above is statewide. What sits on top is the part that varies most in the Discovery Act: whether the department requires an informal discovery conference before it will hear the motion, how a reservation is obtained, and how far out the first available hearing date is.

In San Diego, the working assumption is that a judge will not want to see a discovery dispute you have not genuinely tried to resolve, and that an IDC comes before a motion where the calendar allows it. Check the assigned department's standing order rather than the county rules alone. Riverside and San Bernardino run their own reservation practices and lead times differ by department.

For every other county, including Los Angeles and Orange, the statewide rule above is what this site states. Read the local rules and the assigned department's standing order yourself, because a confident sentence here about how a department runs would be worse than no sentence. What does travel is the instinct: expect any California civil department to prefer a conference to a motion on discovery, and to notice whether you met and conferred properly before you asked for a hearing.

One habit is worth more than everything else on this page. Calendar the date the responses arrive, from the proof of service, before you have formed an opinion about whether the responses are any good. The deadline is set by a document you already have, and the reason people blow it is that they start with the substance and get to the arithmetic in week six.