A New York appellate court has vacated an arbitration award against Louis Katsoris, impacting how arbitration agreements are enforced in real estate disputes. The decision, made on May 6, 2026, highlights the importance of adhering to agreed arbitration rules. This ruling affects both Katsoris and Houlihan/Lawrence, Inc., the real estate firm involved in the dispute.
The case arose from a disagreement between Katsoris and Houlihan/Lawrence, Inc. over a real estate commission. The parties had entered into an exclusive right to sell agreement in November 2021, which required them to resolve disputes through binding arbitration. However, the arbitration process became contentious when Katsoris claimed he was not properly notified of the arbitration proceedings.
In November 2022, Houlihan/Lawrence initiated arbitration under the American Arbitration Association's (AAA) Consumer Rules, alleging that Katsoris and his wife, Valerie, failed to pay the full commission due under their agreement. In response, Katsoris demanded arbitration under the AAA's Commercial Rules, claiming breach of contract. His demand was later converted into a counterclaim in the ongoing arbitration.
On August 25, 2023, the arbitrator ruled in favor of Houlihan/Lawrence, awarding them $17,000 in damages and $25,964.50 in attorney's fees against Louis Katsoris. The firm then sought to confirm the arbitration award in court, leading to Katsoris's appeal.
The Supreme Court of Westchester County initially confirmed the arbitration award on May 16, 2024. However, Katsoris appealed this decision, arguing that he had not participated in the arbitration and had not received proper notice of the arbitration proceedings.
The Appellate Division ruled in favor of Katsoris, stating, "Louis Katsoris established that he neither participated in the arbitration nor was served with a notice of intention to arbitrate and that the agreement to arbitrate had not been complied with." The court noted that the arbitration was conducted under the Consumer Rules, which was not in line with the original agreement that specified the use of the AAA's Real Estate Industry Arbitration Rules.
The judges on the panel included Cheryl E. Chambers, Deborah A. Dowling, James P. McCormack, and Susan Quirk. They reversed the lower court's decision, vacating the arbitration award and dismissing the proceeding.
This ruling underscores the necessity for parties to adhere strictly to the terms of their arbitration agreements. It serves as a reminder that deviations from agreed procedures can lead to significant legal consequences, including the vacating of arbitration awards.
The impact of this ruling extends beyond just the parties involved. It clarifies the expectations for arbitration in real estate transactions and may influence how future arbitration agreements are drafted and enforced. Parties entering into similar agreements will need to ensure that they clearly outline the rules and procedures to avoid potential disputes.
Moving forward, this decision could prompt Houlihan/Lawrence to reconsider its arbitration practices and how it communicates with clients regarding arbitration notifications. The case also raises questions about the effectiveness of arbitration as a dispute resolution mechanism in real estate, particularly when parties may not fully understand the rules or their rights.
As for the possibility of an appeal, the court's decision may be final unless further action is taken. Details were not available in the court filing regarding any related cases or further appeals. This ruling may set a precedent for how arbitration agreements are enforced in New York, particularly in the real estate sector.











