CPLR 6314: Concrete Proof Required to Vacate a Preliminary Injunction; Undertaking Must Be Non-Speculative

Introduction

Zwickel v Underhill Land LLC (2026 NY Slip Op 01106 [3d Dept Feb. 26, 2026]) is the Appellate Division, Third Department’s third encounter with a dispute between plaintiff trustees of a family trust (owners of the “Zwickel property”) and developer defendants (owners of an adjacent subdivided parcel). The conflict centers on an “old wagon road” (the “subject road”) running from Underhill Road and along the parties’ boundary, which defendants sought to improve to provide practical access to their development lots.

After plaintiffs sued for trespass and obtained a preliminary injunction barring roadway improvements that encroached on the Zwickel property, the litigation shifted to whether defendants could (1) vacate the injunction based on claimed easement rights and/or the road’s asserted status as a public highway, and (2) dramatically increase the injunction undertaking after the Town denied certificates of occupancy due to inadequate access.

Summary of the Opinion

The Third Department affirmed Supreme Court’s order that (i) declined to vacate the preliminary injunction and (ii) increased the undertaking to $165,000—but rejected defendants’ demand to raise the undertaking to $1 million.

The court held that, under CPLR 6314, vacatur/modification is discretionary and requires compelling or changed circumstances rendering continuation inequitable (or failure to proceed expeditiously). On this record, defendants did not show a likelihood of success on their express, implied, or prescriptive easement theories, nor did they establish the subject road was a public highway warranting vacatur. As to the undertaking, the court emphasized that an undertaking must be rationally related to non-speculative damages; defendants’ asserted $1 million figure was supported only by conclusory, “potential” harms.

Analysis

Precedents Cited

1) The CPLR 6314 framework: vacatur/modification is discretionary and requires a developed showing

  • Hofstra Univ. v Nassau County, N.Y., 166 AD3d 863, 866 (2d Dept 2018): cited for the general proposition that CPLR 6314 allows a defendant to move “at any time” to vacate or modify a preliminary injunction or undertaking. This case anchors the procedural posture: defendants were not time-barred from seeking relief after the injunction issued.
  • Matter of New York State Off. of Victim Servs. v Blue, 240 AD3d 1064, 1065 (3d Dept 2025), appeal dismissed 44 NY3d 1035 (2025): supplied the controlling standard that vacatur/modification may be granted upon “compelling or changed circumstances that render continuation of the injunction inequitable” (or failure to proceed expeditiously), and that the decision lies in the court’s sound discretion. The Third Department used this standard to frame both issues: whether to vacate the injunction and whether the undertaking was an abuse of discretion.

2) Easement doctrines: what must be proven (and what was missing here)

  • Gugino v Scripa, 228 AD3d 1112, 1113 (3d Dept 2024), and Northwood Sch., Inc. v Fletcher, 190 AD3d 1136, 1138 (3d Dept 2021): cited for the definition of an express easement appurtenant—created through a written conveyance subscribed by the grantors that burdens the servient estate for the benefit of the dominant estate. These cases shaped the court’s conclusion that a deed between other parties cannot, by itself, impose a burden on the Zwickel property.
  • Biles v Whisher, 160 AD3d 1159, 1160 (3d Dept 2018), and LaBarge v MJB Lake LLC, 220 AD3d 1100, 1102 (3d Dept 2023): cited for the elements of an implied easement: (1) unity and subsequent separation of title, (2) pre-severance use that was long continued and obvious/manifest indicating permanence, and (3) necessity for beneficial enjoyment. The court accepted unity/severance but relied on these precedents to find the record lacking on obvious “meant-to-be-permanent” use and necessity at the time of severance.
  • Sardino v Scholet Family Irrevocable Trust, 238 AD3d 1289, 1292 (3d Dept 2025), lv denied 44 NY3d 909 (2026): cited for the requirement that a prescriptive easement be shown by clear and convincing evidence of open, notorious, hostile, and continuous use for 10 years. The court invoked this standard to reject generalized references to use without evidence of dates, duration, and continuity.
  • Curtis v Town of Galway, 50 AD3d 1370, 1371 (3d Dept 2008): cited for the proposition that once a road becomes a public highway, it is presumed to continue until shown otherwise. The Third Department used this presumption as a doctrinal reference point—then found defendants had not first established that the subject road became a public highway.

3) Why the particular easement proofs failed: chain-of-title and evidentiary sufficiency

  • Simone v Heidelberg, 9 NY3d 177, 182 (2007), and McColgan v Brewer, 84 AD3d 1573, 1574 (3d Dept 2011): applied to reject defendants’ reliance on a 1911 deed because the Zwickel property owner was not a party; thus defendants’ predecessor could not gain a right-of-way over the Zwickel property through that instrument. These authorities underscore a basic property principle: easements are burdens on land that generally require a grant (or a doctrine substituting for grant) tied to the servient estate.
  • Beretz v Diehl, 302 AD2d 808, 810 (3d Dept 2003), and U.S. Cablevision Corp. v Theodoreu, 192 AD2d 835, 838 (3d Dept 1993), with Thomas Gang, Inc. v State of New York, 19 AD3d 861, 862 (3d Dept 2005) (compare): used to reinforce that implied easements require evidence of pre-severance conditions demonstrating permanence and necessity. The “compare” citation signals that where proof exists (as in the compared case), the result can differ; here, the proof did not reach that level.
  • Weir v Gibbs, 46 AD3d 1192, 1193-1194 (3d Dept 2007), and Alexy v Salvador, 217 AD2d 877, 879 (3d Dept 1995), with Auswin Realty Corp. v Klondike Ventures, Inc., 163 AD3d 1107, 1109-1110 (3d Dept 2018) (compare): cited to illustrate that prescriptive easement claims fail where the proof is vague on the “when” and “how continuously” of the claimed use. The court treated the 1911 deed’s references to “open use” as too nonspecific to establish the 10-year continuous period by clear and convincing evidence.
  • Petti v Town of Lexington, 92 AD3d 1111, 1113 (3d Dept 2012) (compare), and Curtis v Town of Galway, 50 AD3d at 1371-1372: cited in the discussion of public-highway character; the Third Department contrasted situations where the evidence established (or more strongly supported) highway status with the ambiguity here (the deed calling Underhill Road “public” but the subject road merely “an old highway”).

4) Undertakings: must be rational and supported, not speculative

  • 572 Walt Whitman Rd. Holdings, LLC v Whitman Capital, LLC, 237 AD3d 878, 883 (2d Dept 2025): provided the key undertaking principle: the amount must not be based upon speculation and must be rationally related to damages defendants might suffer if the injunction is later found improper. This case is the backbone of the Third Department’s rejection of the $1 million request.
  • Tahmin v Interlaken Owners, Inc., 228 AD3d 983, 985 (2d Dept 2024), and Darwish Auto Group, LLC v TD Bank, N.A., 224 AD3d 1115, 1119 (3d Dept 2024): cited for appellate deference: fixing an undertaking is within Supreme Court’s discretion and is disturbed only for improvident exercise.
  • Matter of National Fuel Gas Distrib. Corp. v City of Jamestown, 108 AD3d 1045, 1047 (4th Dept 2013): used to frame the “compelling or changed circumstances” inquiry as applied to defendants’ attempt to justify a dramatic increase based on asserted inequity.
  • 255 Butler Assoc., LLC v 255 Butler, LLC, 208 AD3d 829, 831 (2d Dept 2022), and 456 Johnson, LLC v Maki Realty Corp., 177 AD3d 829, 830 (2d Dept 2019): cited as additional support for affirming the exercise of discretion in setting an undertaking where the movant’s claimed harms are not adequately substantiated.

Legal Reasoning

1) No vacatur: defendants did not show a sufficiently strong easement/highway basis to undo the injunction

The court did not re-try the merits of the underlying trespass action; instead, it evaluated whether defendants’ asserted property-right defenses were developed enough to show Supreme Court acted unreasonably in continuing interim relief. Applying the easement doctrines:

  • Express easement: The 1911 deed did not bind the Zwickel property because the Zwickel owner was not a party to the conveyance; therefore it could not create a right-of-way over plaintiffs’ land.
  • Implied easement: Even with undisputed unity/severance in 1906, defendants failed to show pre-severance use of the subject road that was sufficiently obvious and intended as permanent, or that an easement was necessary at severance.
  • Prescriptive easement: References to use in the deed did not establish the required clear and convincing proof of continuous, uninterrupted use for 10 years—missing were concrete dates and continuity evidence.
  • Public highway: The record was “at best inconclusive.” The deed’s language distinguished Underhill Road as a “public highway” while describing the subject road as “an old highway,” leaving defendants short of establishing public status.

The throughline is evidentiary: defendants presented theories but did not supply the kind of proof that would make continuation of the injunction inequitable as a matter of discretion under CPLR 6314.

2) Undertaking affirmed at $165,000: Supreme Court could increase it based on concrete cost evidence, but not to $1 million on conjecture

The court accepted that circumstances changed in a meaningful way—certificates of occupancy were denied due to access issues—but it insisted the undertaking still must be supported and rational. Defendants’ $1 million request relied on an affidavit describing “potential” losses, “probable” future litigation with neighbors, and financing risks driven by market forces. That showing was deemed conclusory and speculative under 572 Walt Whitman Rd. Holdings, LLC v Whitman Capital, LLC.

Supreme Court’s $165,000 figure was tied to an estimated cost to construct an alternate roadway (a more concrete proxy for potential damages attributable to the injunction). Given the appellate standard of deference, the Third Department found no improvident exercise of discretion in selecting that number rather than defendants’ unsupported seven-figure demand.

Impact

  • Developers facing access disputes: The decision signals that a municipality’s denial of certificates of occupancy may justify seeking modification (including a higher undertaking), but it does not automatically entitle a developer to vacatur of an injunction restricting disputed access work.
  • Evidence-driven easement litigation at the injunction stage: Parties seeking to dissolve injunctions based on easement theories must marshal proof with the same rigor the doctrines require—particularly for prescriptive easements (dates, continuity) and implied easements (conditions and necessity at severance).
  • Undertakings as a disciplined damages proxy: Trial courts are reaffirmed in setting undertakings based on tangible, articulable measures (e.g., alternative access costs) and rejecting speculative business-loss narratives untethered to proof.
  • Public highway claims: Ambiguous historical references (e.g., “old highway” versus “public highway”) will not carry the burden; litigants should expect to need clearer documentary and/or governmental evidence to establish highway status.

Complex Concepts Simplified

  • Preliminary injunction: A temporary court order maintaining the status quo while the case is litigated, granted before final adjudication.
  • Undertaking: A bond-like security posted by the party who obtained the injunction, meant to cover the enjoined party’s damages if the injunction is later found to have been wrongly issued.
  • Express easement appurtenant: A written, recorded (or otherwise provable) grant that gives one parcel (dominant estate) a right to use another parcel (servient estate), and “runs with the land.”
  • Implied easement: An easement not written down, inferred from how the land was used when a single owner split it into separate parcels—requiring obvious pre-split use suggesting permanence and a level of necessity at the time of the split.
  • Prescriptive easement: An easement acquired by long, adverse use (similar in spirit to adverse possession but for use rather than title), requiring open, notorious, hostile, and continuous use for the statutory period (10 years).
  • Public highway (in this context): A road recognized as public; once established, it is presumed to remain public until shown otherwise—but the party invoking that presumption must first prove the road attained public-highway status.

Conclusion

Zwickel v Underhill Land LLC reinforces two practical rules in New York injunction practice under CPLR 6314: (1) a party seeking to vacate a preliminary injunction must present concrete, doctrine-specific proof supporting the claimed right (here, easement or public-highway status), not merely plausible theories; and (2) an injunction undertaking must be evidence-based and rational, not a vehicle for speculative projections of business harm. The decision strengthens trial-court discretion to maintain interim restraints in land-use/access disputes while calibrating security to demonstrable risk.