Pursuant to CPLR 306-b, a court may, in the exercise of discretion, grant a motion for an extension of time to effect service for good cause shown or in the interest of justice. In order to establish good cause, a plaintiff must demonstrate reasonable diligence in attempting service. If good cause for an extension is not established, courts must consider the broader interest of justice standard of CPLR 306-b. Under the interest of justice standard, the court may consider diligence, or lack thereof, along with any other relevant factor, including expiration of the Statute of Limitations, the meritorious nature of the cause of action, the length of delay in service, the promptness of a plaintiff's request for the extension of time, and prejudice to defendant.
21st Mtge. Corp. v. Akter, NY Slip Op 00413 (2d Dep't January 29, 2024)