530 East 89 Corp., Appellant v. Arthur A. Unger, Doing Business as Unger & Unger, Respondents. (And Another…

Summary

The New York Court of Appeals affirmed the Appellate Division's order, holding that the plaintiff must present expert testimony to support an architectural malpractice claim unless the issue is within the competence of a lay jury, and that the defendants did not breach a contract because they never guaranteed acceptable plans. The expert testimony offered was deemed insufficient to establish negligence, and no contractual guarantee was found.