First National Bank of Port Jefferson is a historic bank building located at Port Jefferson in Suffolk County, New York. It is a -story brick building with a 2-story turret that projects from the second story of the southwest corner and rises above the roofline. The turret has a steeply pitched, cone shaped slate roof and three windows on both levels. The main entrance to the building used to be directly below the turret, but was made into a window around 1949 when a 1-story brick, flat-roofed addition was built on the east side of the bank building. In 1948, the building ceased being used for a bank and was purchased by the Town of Brookhaven, who completed the 1-story addition the following year.It was added to the National Register of Historic Places in 2005. In 2016 the buildings interior was remodeled to include first floor Retail space and two luxury residential apartments on the second floor.
"First National Bank LI focuses on business and consumer needs on Long Island and in New York City. We offer a broad set of lending, deposit, investment and cash management products. First National Bank LI is known for its culture of delivering extraordinary service and a customer-first banking experience to small and middle market businesses, professional service firms, not-for-profits, municipalities and consumers. The Bank's tagline "Go First. Go Far." communicates its employees' commitment to helping customers reach their financial goals. Member FDIC. Equal Housing Lender. Equal Opportunity Lender. Equal Opportunity Employer."