Our New York City business litigation lawyers handle tortious interference with business cases for business of varying disciplines and sizes. A tortious interference with contract claim is only proper when a defendant causes a third-party (not the plaintiff) to breach the underlying contract.In New York, a tort is defined as any unlawful act that causes harm to another person, their property, reputation, or something similar. A business tort is an injury to these assets. Nonetheless, Plaintiff only claims to be a lease guarantor. New York private nuisance is a tort that punishes interference with the use and enjoyment of land. The defendant's conduct must go beyond typical ethical behavior in the marketplace to be considered tortious interference. Further, under New York law, third parties cannot use unlawful means to interfere with an existing or potential contract. Keeling owns a unit at 3614 Johnson Avenue, Bronx, New York. Silvina Salvo also owns a unit in the building.