FAPA Bars Challenges to Prior Mortgage Acceleration After a Service-Based Dismissal

Case: Desrosiers v U.S. Bank Natl. Assn., 2026 NY Slip Op 06414

Court: Appellate Division, Second Department, Supreme Court of New York
Decided: November 4, 2026

The supplied opinion is designated uncorrected and subject to revision before publication in the Official Reports.

1. Introduction

This decision addresses whether a mortgage holder can avoid the consequences of an expired foreclosure limitations period by arguing that an earlier foreclosure plaintiff lacked standing. The earlier action had demanded immediate payment of the entire mortgage debt but was later dismissed because the borrower had not been properly served.

Applying CPLR 213(4)(b), as amended by the Foreclosure Abuse and Prevention Act (FAPA), the Second Department held that the defendants could not challenge that earlier acceleration. The statutory exception required an express judicial determination, made upon a timely interposed defense, that the debt had not been validly accelerated. A dismissal for defective service did not meet that requirement.

The court therefore affirmed cancellation of the mortgage under RPAPL 1501(4). It also rejected the current mortgage holder’s unjust-enrichment counterclaim for real estate taxes and property-related expenditures because the voluntary payment doctrine barred recovery.

The decision principally applies established statutory rules and cited precedents rather than announcing an entirely new doctrine. Its significance lies in distinguishing a service-based dismissal from an express invalid-acceleration determination, and in refusing to treat equitable reimbursement as an automatic consequence of mortgage cancellation.

2. Background and Procedural History

Samuel Desrosiers executed a $340,000 note in favor of Lehman Brothers Bank, FSB, in October 2006. A mortgage on property in Amityville secured the loan. He allegedly failed to make the payment due April 1, 2008, and subsequent monthly payments.

Date Event and significance
July 30, 2008 Mortgage Electronic Registration Systems, Inc. (MERS), as nominee for Lehman, commenced foreclosure proceedings. Its complaint expressly elected to accelerate the mortgage balance and declare it immediately payable.
February 18, 2010 A judgment of foreclosure and sale was entered.
March 7, 2011 The Supreme Court vacated the foreclosure judgment and directed dismissal because service of process on Desrosiers had not been properly effected.
August 8, 2022 Desrosiers commenced this action under RPAPL 1501(4), seeking cancellation and discharge of the mortgage as time-barred.
February 8, 2024 The Supreme Court granted Desrosiers summary judgment against U.S. Bank National Association, the current mortgage-loan holder, and MERS. It also effectively dismissed U.S. Bank’s unjust-enrichment counterclaim and denied the corresponding branches of the defendants’ cross-motion.
May 14, 2024 Judgment was entered directing the Suffolk County Clerk to discharge the mortgage of record.
November 4, 2026 The Second Department affirmed the judgment, dismissed the separate appeal from the intermediate order, and awarded Desrosiers one bill of costs.

U.S. Bank and MERS principally contended that MERS lacked standing to commence the 2008 foreclosure action. They argued that the complaint therefore could not have validly accelerated the debt, so the six-year limitations period had not begun to run on the entire balance. They also challenged FAPA’s retroactive application and its constitutionality.

3. Summary of the Opinion

  1. The borrower established entitlement to mortgage cancellation. The 2008 complaint expressly accelerated the debt, and the cancellation action was commenced more than six years later.
  2. FAPA barred the defendants’ standing-based response. The earlier action was dismissed for defective service, not upon an express judicial determination that acceleration was invalid.
  3. The retroactivity and constitutional objections failed. The court relied on controlling and related precedents rejecting those challenges.
  4. The unjust-enrichment counterclaim failed. U.S. Bank did not show that its property-related payments resulted from mistake, accident, or fraud sufficient to avoid the voluntary payment doctrine.
  5. The final judgment was the proper vehicle for appellate review. Entry of judgment terminated the right to appeal directly from the intermediate order, but the issues raised by that order remained reviewable on the appeal from the judgment.

4. Legal Reasoning

A. Acceleration connects the earlier foreclosure to the limitations defense

CPLR 213(4) establishes a six-year limitations period for mortgage foreclosure actions. For an installment loan, acceleration is critical because it makes the entire unpaid balance immediately due. Once acceleration occurs, the limitations period runs against the whole accelerated debt, not merely individual installments.

The 2008 complaint expressly elected to “accelerate the mortgage balance and declare the same to be immediately due and payable.” That language established the relevant acceleration date as July 30, 2008. Desrosiers commenced his cancellation action on August 8, 2022, more than fourteen years later.

RPAPL 1501(4) supplies the corresponding title-clearing remedy. When the applicable foreclosure limitations period has expired, a qualifying person with an estate or interest in the property may seek cancellation and discharge of the recorded mortgage. Thus, the passage of time supported affirmative relief removing the encumbrance, rather than merely a defense to a later foreclosure.

B. FAPA restricted the defendants’ ability to contest the earlier acceleration

The court acknowledged the general rule that an attempted acceleration is ineffective when the foreclosing plaintiff lacks authority to accelerate or sue. Nevertheless, that principle did not resolve this case because CPLR 213(4)(b) specifically limits the arguments available to defendants in mortgage-discharge actions.

A defendant is estopped from asserting that the limitations period has not expired because the instrument was not validly accelerated, unless the prior action was dismissed “based on an expressed judicial determination, made upon a timely interposed defense, that the instrument was not validly accelerated.”

The statutory exception is therefore narrower than a showing that the prior foreclosure failed. It requires a particular judicial determination about acceleration, made in response to a timely defense and forming the basis for dismissal.

The 2011 dismissal did not satisfy that exception. It rested on improper service of process, not an express determination that the debt had not been validly accelerated. The defendants could not convert that service ruling into the different determination required by the statute.

Importantly, the appellate court did not decide that MERS actually possessed standing in 2008. Nor did it establish that every foreclosure complaint filed by an unauthorized plaintiff necessarily effects a valid acceleration for all purposes. Its holding was that these defendants were statutorily barred from using the asserted lack of standing to defeat this RPAPL 1501(4) action.

C. The summary-judgment record presented no triable issue

Desrosiers made a prima facie showing through the earlier complaint’s express acceleration language and the passage of more than six years before commencement of the cancellation action. The defendants’ principal response depended on an argument CPLR 213(4)(b) precluded.

Because the prior dismissal did not contain the required invalid-acceleration determination, the defendants failed to raise a triable issue of fact. The court accordingly upheld summary judgment for Desrosiers and the denial of the defendants’ competing request for judgment.

D. Retroactivity and constitutional objections were resolved by precedent

Both the earlier foreclosure and the commencement of the cancellation action predated FAPA’s enactment in 2022. The defendants therefore sought to avoid the amended statute through retroactivity and constitutional objections.

The Second Department rejected those objections by citing Court of Appeals decisions and its own precedent. The opinion does not independently develop a detailed constitutional analysis or identify separate constitutional theories. Its reasoning on this issue is precedent-driven, and the decision should not be read as supplying constitutional explanations it does not express.

E. Unjust enrichment did not overcome the voluntary payment doctrine

U.S. Bank sought reimbursement for real estate taxes and other expenditures toward the property’s upkeep. Unjust enrichment generally requires proof that one party benefited at another’s expense and that retention of the benefit would offend equity and good conscience.

However, the voluntary payment doctrine limits recovery even where another person receives a benefit. It bars recovery of payments voluntarily made with full knowledge of the facts and without fraud or a qualifying mistake.

U.S. Bank made no showing that its payments were accidental or mistaken, or that fraud induced them. The doctrine therefore barred its unjust-enrichment counterclaim. The court did not hold that tax or maintenance expenditures can never be recoverable; it held that the pleaded equitable theory failed on this record.

5. Precedents Cited and Their Influence

A. Appellate procedure

Matter of Aho, 39 NY2d 241, 248. This authority explains why the separate appeal from the February 2024 order was dismissed. Once final judgment was entered, direct appeal from that intermediate order terminated. Together with CPLR 5501(a)(1), the decision also preserved review of the order’s issues through the judgment appeal. The dismissal was therefore procedural, not a refusal to review the defendants’ substantive arguments.

B. Mortgage cancellation, limitations, and acceleration

Bank of Am., N.A. v Scher, 205 AD3d 985, 987–988. Cited alongside RPAPL 1501(4), this case supports the availability of an affirmative action to cancel a mortgage after the foreclosure limitations period expires. It supplies the remedial foundation for Desrosiers’s claim.

Bank of N.Y. Mellon v Mor, 201 AD3d 691, 694. The court quoted this decision for the rule that acceleration makes the entire mortgage debt due and starts the limitations period on the whole debt. That principle made the 2008 acceleration, rather than merely the dates of missed installments, central to the analysis.

Cohen v Deutsche Bank Natl. Trust Co., 229 AD3d 758, 760–761. This decision reinforced the acceleration rule and supported the conclusion that a cancellation plaintiff can establish the necessary limitations showing by demonstrating acceleration more than six years before the discharge action. It informed both the legal framework and the assessment of Desrosiers’s prima facie proof.

Wells Fargo Bank, N.A. v Lefkowitz, 171 AD3d 843, 844. This authority identifies a foreclosure complaint seeking the full unpaid balance as a means of accelerating mortgage debt. It connects the wording of the 2008 pleading to the commencement of the limitations period.

Citimortgage, Inc. v Gunn, 234 AD3d 922, 923. The court cited this case when finding that the borrower established acceleration through the earlier foreclosure complaint. Its role was to support applying the general acceleration rule to the express election contained in MERS’s pleading.

C. Authority to accelerate and FAPA’s statutory estoppel

U.S. Bank Trust, N.A. v Atedgi, 236 AD3d 707, 711. This decision supplied the general proposition that service of a complaint does not validly accelerate debt when the plaintiff lacks authority to accelerate or foreclose. Its inclusion matters because the court recognized the underlying legal premise of the defendants’ argument before explaining why FAPA barred them from relying on it here.

Brennan v Deutsche Bank Trust Co. Ams., 237 AD3d 1027, 1029–1030. This was the principal cited authority for CPLR 213(4)(b)’s restriction on challenges to prior acceleration. It supported both the statutory framework and the conclusion that the defendants could not invoke an alleged standing defect without the required express judicial determination in the earlier action.

D. Retroactive application and constitutional challenges

Van Dyke v U.S. Bank, N.A., 45 NY3d 461. The court relied on this Court of Appeals authority to reject both the objection to FAPA’s retroactive application and the constitutional challenge to that application. It furnished higher-court support for applying the amended limitations framework to the earlier events.

Article 13 LLC v Ponce De Leon Fed. Bank, 45 NY3d 441. Also cited on both issues, this Court of Appeals decision reinforced the conclusion that neither nonretroactivity nor constitutional objections prevented application of FAPA here. The opinion relies on it without restating its underlying analysis.

FV-1, Inc. v Palaguachi, 234 AD3d 818, 822. This decision provided additional appellate support for rejecting the constitutional challenges to retroactive application. Its citation reinforces that the court treated the objection as governed by existing authority rather than as an unresolved question.

E. Unjust enrichment and voluntary payments

Daniels v Ruggiero, 230 AD3d 563, 565. This case supplied the stated elements of unjust enrichment: enrichment at another’s expense and circumstances making retention inequitable. It established the starting framework for U.S. Bank’s counterclaim.

Delidimitropoulos v Karantinidis, 186 AD3d 1489, 1491. Quoted through Daniels v Ruggiero, this authority was the underlying source for that formulation. Its role concerned the governing test, not a separate factual analogy developed in the opinion.

Daldan, Inc. v Deutsche Bank Natl. Trust Co., 188 AD3d 989, 991–992. The court cited this decision for both unjust-enrichment principles and the application of the voluntary payment doctrine. It linked the general equitable test to the specific obstacle facing reimbursement of voluntarily incurred property expenses.

GITSIT Solutions, LLC v Azcuy, 242 AD3d 956, 959–960. This authority directly supported the analysis of payments made without accident, mistake, or fraud. It provided the immediate precedent for concluding that U.S. Bank’s failure to show such circumstances defeated its reimbursement claim.

Dillon v U-A Columbia Cablevision of Westchester, 100 NY2d 525, 526. Quoted through GITSIT Solutions, LLC v Azcuy, this Court of Appeals decision supplied the general voluntary-payment rule. Its influence was doctrinal: an alleged benefit to the recipient does not alone justify recovering a knowingly and voluntarily made payment.

6. Impact and Limits

Historical dismissal orders become decisive

Future RPAPL 1501(4) litigation will require close attention to why an earlier foreclosure was dismissed. An unsuccessful foreclosure is not, by itself, an adjudication of invalid acceleration. Parties invoking the statutory exception must identify the express determination and timely defense the statute requires.

Late standing arguments have reduced utility

The decision prevents a mortgage holder from avoiding the limitations consequences of an earlier acceleration merely by asserting, years later, that the earlier plaintiff lacked standing. In the circumstances addressed here, the statutory inquiry concerns what the earlier court expressly decided, not simply whether a standing argument could now be formulated.

Service defects and acceleration defects remain distinct

A ruling that the borrower was not properly served addresses a different issue from a ruling that the mortgage debt was not validly accelerated. The decision makes that distinction consequential under FAPA without establishing a universal rule about every possible defective-service scenario.

Property expenditures do not guarantee equitable reimbursement

Mortgage holders should not assume that taxes and maintenance expenses will be recoverable through unjust enrichment if the mortgage is later discharged. The voluntary nature of those expenditures and evidence of any qualifying exception remain critical. The opinion does not resolve other contractual, statutory, or equitable theories not adjudicated in the supplied text.

The holding remains bounded

The court did not determine MERS’s actual standing, announce that every dismissed foreclosure remains an effective acceleration for every purpose, or hold that every recorded mortgage older than six years must be canceled. Its result depended on the express acceleration, the elapsed limitations period, the statutory estoppel, and the absence of a qualifying earlier judicial determination.

7. Complex Concepts Simplified

Acceleration
A demand that the entire remaining loan balance be paid immediately, rather than through future installments. It starts the limitations period on the whole accelerated debt.
Standing
The legal entitlement to bring a lawsuit. The defendants alleged that MERS lacked that entitlement in 2008, but the court held that FAPA barred their use of that argument here.
Service of process
The legally required delivery of court papers to a defendant. Improper service caused dismissal of the earlier foreclosure but did not constitute the express invalid-acceleration ruling required by CPLR 213(4)(b).
Statutory estoppel
A legislative rule preventing a party from advancing a specified argument. Here, the statute barred the defendants from denying prior acceleration unless its stated exception applied.
Prima facie showing and summary judgment
A sufficient initial evidentiary showing of entitlement to judgment without trial. Once Desrosiers made that showing, the defendants needed to identify a genuine factual issue requiring trial.
Cancellation and discharge of record
Judicial removal of the mortgage as a recorded encumbrance on the property. It clears the title of that mortgage rather than merely defeating a particular foreclosure lawsuit.
Unjust enrichment
An equitable claim seeking recovery of a benefit that another person should not fairly retain.
Voluntary payment doctrine
A rule generally preventing recovery of payments knowingly and voluntarily made without fraud or a qualifying mistake, even when the recipient benefited.
Retroactive application
Applying a statute to earlier events or existing disputes. The court rejected the argument that FAPA could not apply to this litigation.

8. Conclusion

Desrosiers v U.S. Bank Natl. Assn. confirms that a service-based dismissal does not satisfy FAPA’s exception permitting a mortgage-discharge defendant to challenge prior acceleration. Without the specified express judicial determination, the defendants could not use alleged lack of standing to avoid the expired foreclosure limitations period.

The decision also confirms that mortgage cancellation does not automatically entitle a lender to reimbursement of property expenses: voluntary payments remained unrecoverable under the unjust-enrichment theory presented. Together, these holdings emphasize the importance of the earlier dismissal’s precise basis and the legal character of expenditures made while a mortgage remains unresolved.