CPLR 3211 Motions to Dismiss: The Single-Motion Rule, the Grounds You Waive, and the Conversion Traps

Short answer: CPLR 3211(e) permits “no more than one” pre-answer motion to dismiss. Omit a personal jurisdiction or service objection from it and that objection is waived; plead a service objection instead and you have 60 days to move on it.

Most 3211 problems are lost on sequencing, not merits: a defendant moves on (a)(7) and later learns the jurisdiction objection went with that motion. Below: what subdivision (e) does to each ground, the (c) and (d) conversion provisions, and the (f) timing rule. Broader context is on our New York legal research and writing page.

What does the CPLR 3211(e) single-motion rule say?

Subdivision (e) opens: “At any time before service of the responsive pleading is required, a party may move on one or more of the grounds set forth in subdivision (a) of this rule, and no more than one such motion shall be permitted.” Grounds you hold back do not all survive equally. Subdivision (e) sorts them into three groups.

Which CPLR 3211 defenses are waived and which survive?

Group one: (a)(8) and (a)(9), the jurisdiction objections. These are the most fragile. An objection under paragraph eight or nine “is waived if a party moves on any of the grounds set forth in subdivision (a) of this rule without raising such objection or if, having made no objection under subdivision (a) of this rule, he or she does not raise such objection in the responsive pleading.” Even if preserved in the answer, a service objection carries its own clock: it is waived if the party “does not move for judgment on that ground within sixty days after serving the pleading, unless the court extends the time upon the ground of undue hardship.”

Group two: (a)(1), (3), (4), (5), and (6). “Any objection or defense based upon a ground set forth in paragraphs one, three, four, five and six of subdivision (a) of this rule is waived unless raised either by such motion or in the responsive pleading.” These can sit out the motion, but they must then appear in the answer. Paragraph (a)(5) is the long list: “arbitration and award, collateral estoppel, discharge in bankruptcy, infancy or other disability of the moving party, payment, release, res judicata, statute of limitations, or statute of frauds.”

Group three: (a)(2), (7), and (10). Subject matter jurisdiction, failure to state a cause of action, and nonjoinder. “A motion based upon a ground specified in paragraph two, seven or ten of subdivision (a) of this rule may be made at any subsequent time or in a later pleading, if one is permitted.”

CPLR 3211 rule table

Provision	Operative language	Source
One motion	“no more than one such motion shall be permitted”	CPLR 3211(e), nysenate.gov
(a)(8), (a)(9) waiver	“is waived if a party moves on any of the grounds set forth in subdivision (a) of this rule without raising such objection”	CPLR 3211(e), nysenate.gov
Service objection clock	“within sixty days after serving the pleading, unless the court extends the time upon the ground of undue hardship”	CPLR 3211(e), nysenate.gov
(a)(1), (3) to (6)	“waived unless raised either by such motion or in the responsive pleading”	CPLR 3211(e), nysenate.gov
(a)(2), (7), (10)	“may be made at any subsequent time or in a later pleading, if one is permitted”	CPLR 3211(e), nysenate.gov
Conversion	“may treat the motion as a motion for summary judgment”	CPLR 3211(c), nysenate.gov
Facts unavailable	“facts essential to justify opposition may exist but cannot then be stated”	CPLR 3211(d), nysenate.gov
Time to answer	“until ten days after service of notice of entry of the order”	CPLR 3211(f), nysenate.gov
Pleading standard	“determine only whether the facts as alleged fit within any cognizable legal theory”	Leon v Martinez, 84 NY2d 83 (1994)

When does a CPLR 3211 motion convert to summary judgment?

Under subdivision (c), “either party may submit any evidence that could properly be considered on a motion for summary judgment.” Then: “Whether or not issue has been joined, the court, after adequate notice to the parties, may treat the motion as a motion for summary judgment.” It also authorizes the court to “order immediate trial of the issues raised on the motion.” A movant who loads the motion with affidavits invites conversion, and an opponent who answers with a bare memorandum may face a summary judgment standard without a summary judgment record. The protection is “adequate notice,” so state in opposition whether you consent to conversion.

The pleading standard itself comes from the Court of Appeals in Leon v Martinez, 84 NY2d 83 (1994): the Court wrote that “We accept the facts as alleged in the complaint as true,” that courts “accord plaintiffs the benefit of every possible favorable inference,” and that the task is to “determine only whether the facts as alleged fit within any cognizable legal theory.” On documentary evidence, “dismissal is warranted only if the documentary evidence submitted conclusively establishes a defense to the asserted claims as a matter of law.” The Court affirmed the Appellate Division, and the complaint survived.

How does CPLR 3211(d) protect the opposing party?

Subdivision (d) is the opponent’s tool: “Should it appear from affidavits submitted in opposition to a motion made under subdivision (a) or (b) that facts essential to justify opposition may exist but cannot then be stated,” the court may deny the motion and let the movant “assert the objection in his responsive pleading,” or “order a continuance to permit further affidavits to be obtained or disclosure to be had.” The statute keys this to affidavits, so identify what facts exist, who holds them, and why they cannot be stated now.

Drafting-ready text: CPLR 3211(d) affirmation paragraph

[COUNSEL], an attorney duly admitted to practice in the courts of the
State of New York, affirms the following under the penalties of perjury:

1. I am counsel for [PARTY] and submit this affirmation in opposition
   to [MOVANT]'s motion to dismiss under CPLR 3211(a)([GROUND]) and
   pursuant to CPLR 3211(d).

2. Facts essential to justify opposition to the motion may exist but
   cannot now be stated. Specifically, [identify each fact, e.g., the
   terms of the [DATE] agreement between [MOVANT] and [NON-PARTY]],
   which bear on [the issue raised by the motion] because [explain].

3. Those facts are exclusively within the possession of [MOVANT /
   NON-PARTY]. [PARTY] requested them on [DATE] by [describe request],
   and they have not been produced.

4. No discovery has been exchanged. [PARTY] seeks [identify the
   specific documents or deposition] limited to [issue].

5. [PARTY] therefore requests that the Court deny the motion, or in
   the alternative order a continuance to permit further affidavits
   to be obtained or disclosure to be had on [issue].

Conform the affirmation language to the form your court currently requires before filing.

Worked example: the 60-day service objection and the 3211(f) answer date

Scenario A. Defendant answers on Thursday, October 15, 2026 and pleads improper service. The 3211(e) clock runs 60 days from service of the pleading: Monday, December 14, 2026. If no motion on that ground is made by then, the objection is waived absent an undue hardship extension.

Scenario B. Defendant moves under 3211 before answering. The court decides the motion, and plaintiff serves the order with notice of entry by personal delivery on Tuesday, November 3, 2026. Under 3211(f) the answer is due “ten days after service of notice of entry of the order”: Friday, November 13, 2026. If notice of entry is served by another method, check CPLR 2103 for any added days before relying on this count; that addition is not computed here.

Cross-jurisdiction contrast: federal, bankruptcy, and California

Federal court. FRCP 12(g)(2) is the closest analog: “a party that makes a motion under this rule must not make another motion under this rule raising a defense or objection that was available to the party but omitted from its earlier motion.” Under 12(h)(1), the Rule 12(b)(2) through (5) defenses are waived by “omitting it from a motion in the circumstances described in Rule 12(g)(2).” Failure to state a claim survives under 12(h)(2), including “at trial.” Rule 12(d) converts a 12(b)(6) or 12(c) motion on outside matters, and there the language is mandatory: the motion “must be treated as one for summary judgment under Rule 56.” New York’s 3211(c) says “may.”

Bankruptcy adversary proceedings. Bankruptcy Rule 7012(b) makes Civil Rule 12(b) through (i) applicable in an adversary proceeding, so the federal waiver structure applies there, not CPLR 3211. Rule 7012(a) sets the answer at “30 days after the summons was issued, unless the court sets a different time,” and 7012(b) requires the responsive pleading to state whether the party consents to final orders or judgment by the bankruptcy court.

California. Under CCP 430.80(a), a party who fails to object “either by demurrer or answer” is “deemed to have waived the objection unless it is an objection that the court has no jurisdiction of the subject of the cause of action alleged in the pleading or an objection that the pleading does not state facts sufficient to constitute a cause of action.” Same two survivors as New York’s (a)(2) and (a)(7). The California demurrer timing and recycled-grounds bar are covered in demurrer timing after an amended complaint.

Pre-filing checklist for a CPLR 3211 motion

• Every (a)(8) and (a)(9) objection is in this motion, or you have decided in writing to waive it.
• Every (a)(1), (3), (4), (5), and (6) ground is either in the motion or listed for the answer.
• If a service objection is being pleaded rather than moved, the 60-day date is calendared.
• Affidavits and exhibits are reviewed for conversion risk under 3211(c).
• Documentary evidence under (a)(1) is the kind that “conclusively establishes a defense,” not a contested affidavit.
• The 3211(f) answer date is diaried off service of notice of entry, with the service-method addition checked.
• Motion return date and answering-paper schedule set under CPLR 2214(b); see our CPLR 2214(b) timing guide.
• Memorandum length checked against 22 NYCRR 202.8-b; see New York motion word limits.

Getting the one motion right

Because a New York motion to dismiss is a single shot, ground selection matters as much as the brief. Send us the complaint, the affidavit of service, and your answer deadline, and we will return a ground-by-ground waiver analysis with the 3211 motion papers drafted for your review and signature. If you are opposing, we draft the 3211(d) affirmation and the conversion objection with it.

Send the pleadings for a quote on your NY motion to dismiss.

Authorities cited

N.Y. CPLR 3211(a), (b), (c), (d), (e), and (f), read in four separate fetches of nysenate.gov (most recent revision shown: 2022-05-13), with consistent text across reads. Leon v Martinez, 84 NY2d 83 (1994), opinion text read at law.justia.com and independently at law.cornell.edu, which confirms the July 7, 1994 decision date and “Order affirmed.” FRCP 12(d), (g)(2), (h)(1), and (h)(2), read at law.cornell.edu. Bankruptcy Rule 7012(a) and (b), read at law.cornell.edu, which shows a restyling amendment effective December 1, 2024. Cal. Code Civ. Proc. 430.80(a), read at california.public.law and confirmed verbatim at codes.findlaw.com. Left out for lack of same-day verification: all other case law, including Appellate Division decisions on successive 3211 motions and on undue hardship extensions; pin cites for Leon; the CPLR 2103 additions for service by mail or other methods; CPLR 320 appearance deadlines; the CPLR 3211(g) anti-SLAPP standards; and California’s motion to quash procedure.

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