The largest mall in North-East Singapore and one of the largest suburban malls in the country, it is integrated with the air-conditioned Serangoon Bus Interchange and the Serangoon MRT station.

Built on an empty plot of land right above the Circle line portion of Serangoon MRT station, NEX was developed by its owner, Gold Ridge Pte Ltd[1] and was completed in November 2010.

The mall pioneered several firsts in Singapore, such as a rooftop dog park integrated with a dry and wet playground and Serangoon Public Library, the first public library to be built on a rooftop.

In 2014, the mall underwent minor renovations, such as renovating a part of Level 1 to incorporate fashion giants Uniqlo and H&M, and relocating Kiddy Palace to level 4.

The mall's tenant mix was also slightly refreshed as well, such as Anytime Fitness opening on the roof level of the mall, and various beauty tenants occupying a part of Ground Floor (Basement 1) and Level 1, such as Innisfree, Sephora and jewelry shops such as Swarovski.