PLAINTIFF SUED THE DEVELOPER OF PROPERTY ADJACENT TO PLAINTIFF’S BUILDING ALLEGING EXCAVATION WORK CAUSED PLAINTIFF’S BUILDING TO SETTLE AND LEAN; THE CITY ISSUED A STOP-WORK ORDER STEMMING FROM PLAINTIFF’S COMPLAINT; DEFENDANT-DEVELOPER THEN COUNTERCLAIMED ALLEGING PLAINTIFF WAS NEGLIGENT IN NOT MAINTAINING PLAINTIFF’S BUILDING SUCH THAT THE EXCAVATION WORK WOULD NOT DAMAGE IT, RESULTING IN THE STOP-WORK ORDER AND CAUSING THE DEVELOPER PURELY ECONOMIC LOSS OF AT LEAST $16 MILLION; SUPREME COURT LET THE COUNTERCLAIM STAND BUT THE FIRST DEPARTMENT DISMISSED IT; PLAINTIFF DID NOT OWE A DUTY TO THE DEVELOPER AND THE DEVELOPER WAS NOT ENTITLED TO PURELY ECONOMIC DAMAGES (FIRST DEPT).

The First Department, reversing Supreme Court, in a full-fledged opinion by Justice Moulton, determined the defendant-developer’s counterclaim alleging plaintiff was negligent should have been dismissed. Plaintiff sued the developer alleging excavation and construction on the developer’s property, which is adjacent to plaintiff’s building, caused plaintiff’s building to settle and lean. Defendant-developer counterclaimed alleging plaintiff was negligent in not maintaining plaintiff’s building such that the excavation would would not damage it. The counterclaim alleged economic harm ($16 million) stemming from a stop-work order triggered by the plaintiff’s complaint:

The negligence counterclaim asserts that plaintiff “had a duty to construct and maintain the 1992 Building in compliance with the [Building] Code” and “a duty to maintain the 1992 Building in a reasonable and safe condition.” It contends that, as evidenced by three structural engineering reports, the building was “not constructed in compliance with the Code,” “remains in violation of the Code” and “was constructed and remains in an unsafe condition.” … The counterclaim further asserts that, on December 13, 2023, as a result of these conditions, “the DOB issued a partial Stop Work Order for the Project Site, forcing [the developer] to stop construction on its own property because of structural instability of the 1992 Building that was caused by the 1992 Building’s non-compliance with the Code and [plaintiff’s] failure to maintain the 1992 Building in a reasonable condition.” According to the developer, it was “harmed by the delay in construction . . . due to this stoppage” in an amount not less than $16 million. The developer does not allege that plaintiff’s negligent design, construction, and maintenance of its building caused any bodily injury or property damage.

This appeal raises two novel issues: 1) whether Supreme Court correctly held that plaintiff owes the developer a common-law duty as an adjacent landowner to protect the developer’s excavation/foundation work from construction delays arising out of the stop work order and, 2) assuming the existence of a duty based on plaintiff’s status as an adjacent landowner, whether the court correctly held that the developer could recover purely economic damages.

We now answer both questions in the negative and reverse. 1992 Third Realty LLC v Third Ave NY Realty LLC, 2026 NY Slip Op 03871, First Dept 6-18-26

Practice Point: The owner of a building which is damaged by excavation work on an adjacent building by a developer, does not owe a duty to the developer to maintain his building such that the excavation work would not damage it.