OUR MISSION

Seneca One is a catalyst for growth, creativity, and collaboration—bringing people together and inspiring them to explore Buffalo’s largest building. Spanning 1.4 million square feet in Downtown Buffalo, it is redefining the city’s core by reconnecting Main Street to Canalside and reestablishing Buffalo as a vibrant waterfront destination. Blending residences, workplaces, events, and dining, Seneca One creates a dynamic, connected environment with unmatched views and energy. Home to more than 2,000 people, Seneca One fosters innovation and collaboration—uniting startups, global companies, entrepreneurs, and creatives to drive Buffalo forward.

HISTORY BUILDING ON HISTORY

Seneca One, located at 1 W Seneca Street Buffalo, New York, was constructed between 1969-1974 and contains over 1,200,000 square feet of space. The building was formerly known as One HSBC Center (1999-2013) and Marine Midland Center (1972-1999), and spans the southern end of Main Street under which Buffalo Metro Rail passes. Today, the 40-story building dominates Buffalo’s skyline standing at 529 feet high.

In 2014, Douglas Jemal purchased the building and immediately got to work. Douglas Development is proud to be completely redeveloping Seneca One, Buffalo’s tallest and most iconic building with 360-degree views across our Queen City. We continue to work to turn this historical skyscraper into a mixed-use facility to feature over 100 apartments, retail operations, and commercial space with its 360-degree views over Western New York.