Kolkata along with its metropolitan area, is the main financial and commercial region of East India. Kolkata metropolitan region is one of the seven metro areas in India with a high number of commercial spaces and offices.
Major office hubs of Kolkata are located at Kolkata CBD areas like B.B.D. Bagh, Park Street and PBD areas like Salt Lake Sector-V and New Town CBD.
The following is a list of notable office buildings, tech parks and business parks present in Greater Kolkata. The list does not contain standard office buildings.
Kolkata being the "IT hub of East India", most of the IT and tech parks are located in Salt Lake (officially Bidhannagar) and New Town. Salt Lake Sector-V is the first and prime IT hub of the metropolitan area. Salt Lake Electronics Complex is India's first fully integrated electronics complex, formed by Webel. The oldest IT building in West Bengal as well as East India was constructed here in 1988 which is the SDF Building, which was planned as an electronics building but later upgraded to IT.
New Town contains some of the biggest IT, AI and business parks in India. The biggest campus of TCS in East India is located here. New Town also contains tech parks which come under Bengal Silicon Valley Tech Hub and Fintech Hub.