New York Court of Appeals Narrows Landlord Protections Under “Good Guy” Guaranties

Decision: 1995 CAM LLC v. West Side Advisors, LLC, No. 72 (Oct. 21, 2025)

The New York Court of Appeals issued a major decision reshaping how commercial “good guy” guaranties are interpreted. In 1995 CAM LLC v. West Side Advisors, LLC, the Court held that a personal guarantor’s liability ends when the tenant vacates and surrenders possession of the premises—even if the landlord never formally accepts that surrender in writing.

For landlords, the decision represents a shift in risk allocation. It underscores the need for more precise drafting and careful attention to how guaranty terms interact with standard lease language, particularly when the Real Estate Board of New York (REBNY) lease form is used.

Background: A Dispute Over Surrender and Liability

West Side Advisors (WSA) leased office space at 1995 Broadway in Manhattan from landlord 1995 CAM LLC. The lease incorporated the standard REBNY form and was later amended to include a limited personal guaranty by WSA’s officer, Gary Lieberman. Under that guaranty, Lieberman promised to pay the tenant’s obligations “to the date that [the tenant] shall have completely vacated and surrendered the demised premises … pursuant to the terms of the lease.” The guaranty also required 30 days’ notice before vacating.

In 2020, WSA fell behind on rent and notified the landlord it would vacate on November 30. It did so, conducting a walkthrough and returning the keys to the building superintendent. The landlord did not sign any written acceptance of the surrender and later sued both WSA and Lieberman for unpaid rent and post-vacatur damages.

Both the trial court and the Appellate Division sided with the landlord, ruling that because the REBNY lease requires written acceptance to effect a valid surrender, the guaranty remained in force. But the Court of Appeals reversed, finding that the guarantor’s obligation ended when the tenant vacated and relinquished control of the premises.

The Court’s Reasoning

The Court of Appeals concluded that the guaranty in this case was a classic “good guy” guaranty—a limited promise designed to encourage tenants to leave voluntarily when they can no longer pay rent. The court emphasized that the guaranty’s language focused on the tenant’s actions, not the landlord’s consent.

Requiring written acceptance by the landlord, the court said, would make key parts of the guaranty meaningless—such as the 30-day notice and “completely vacated” clauses. Those provisions only make sense if the guaranty can terminate before the lease ends. The court also pointed to language in the guaranty stating that, in the event of a conflict, the guaranty’s terms would control over the lease.

By vacating the premises, giving notice, and handing over the keys, WSA satisfied the conditions for surrender under the guaranty, even if it did not formally terminate the lease. As a result, Lieberman’s personal liability ended as of the date of vacatur.

What This Means for Landlords

The 1995 CAM decision is a wake-up call for New York commercial landlords who rely on “good guy” guaranties to secure performance. The ruling limits a New York landlord’s ability to hold guarantors responsible beyond the tenant’s physical departure, unless the guaranty language clearly extends that liability.

Key takeaways include:

• Simplify – The Court of Appeals made it clear that this entire case could have been avoided, if the guarantee was simpler and clearer. Moving forward, commercial landlords should consider cutting back on legalese and cross-references to the lease to cut back on litigation risks. Guaranties should be stand-alone documents with clear, self-contained surrender and liability terms that do not depend on the lease for interpretation.
• Review and Redraft Guaranties – Standard leases and off-the-shelf guaranty forms—especially those from REBNY—may no longer provide the protection landlords expect. To preserve leverage, landlords should include explicit language stating that the guarantor’s liability continues, until the landlord accepts the tenant’s surrender in writing—or until a replacement tenant begins paying rent.
• Avoid Incorporation Ambiguity – The guaranty in 1995 CAM incorporated “the terms of the lease,” but also said the guaranty would control in case of conflict. That inconsistency gave the Court of Appeals room to interpret the guaranty as limited. Landlords should make clear that the guarantor’s obligations continue to exist contemporaneously with the tenants.
• Tighten Notice and Delivery Requirements – A major issue in this case was that the guarantee provided for termination under terms that differed from the tenant’s obligations under the lease. Landlord’s should ensure that language in the guarantee does not provided for termination, unless it is identical to the termination of the lease. In this case, that would have required acceptance by the landlord in writing.
• Expect More Tenant Leverage in Disputes – Guarantors may be more confident walking away once a tenant vacates a property. Landlords should take more proactive steps asserting whether they consider the lease terminated and documenting ongoing efforts to mitigate damages.

Looking Ahead

The decision underscores the Court of Appeals’ continued focus on the plain language of contracts and refusal to render contract language superfluous. Moreover, it highlights a public policy point that contracts can, and should, be simpler.

Moving forward, the best way to ensure that a guarantor remains liable under the same terms as the tenant the guarantee should simply contain language saying so.

Ryan Duffy is part of the Commercial Real Estate Transactions group at Stark & Stark frequently drafts and reviews commercial leases and guarantees for commercial landlords in New York and New Jersey.

Ryan Wintermute is in the Litigation and Shopping Centers group at Stark & Stark representing commercial landlords in New York and the tri-state area in enforcing commercial leases and guarantees.

If you are a landlord in New York and need assistance with your leases and guarantees, or want more information on how this decision impacts your leases and guarantees, Stark & Stark’s Commercial Real Estate Transactions group and Litigation and Shopping Centers group can assist you.