It is also the easternmost enclosed mall on Long Island, and thus draws shoppers from the communities that make up the Hamptons, and the North Fork.

The complex covers an area of 1,204,769-square-foot (111,927 m2) of retail space, with the key building (opened in 1969) being one story and 800,000-square-foot (74,000 m2), which includes 119 shops and restaurants.

She had her husband set aside $350,000 in the mall's budget to commission sculptures and paintings artists including Larry Rivers, Jim Dine, Robert Grosvenor, and Alexander Calder.

[16] When the art work was dismantled, the legs were installed in front of Rivers' home, where they remained until being sold at auction in 2021.

[19][20] Cineplex Odeon Corporation upgraded the existing movie theater to include four screens in 1989[10] and added another eight in 1998.

[10] Smith Haven Mall underwent a massive multimillion-dollar renovation project between 2006 and 2007, in which the space once occupied by Stern's and the adjacent unused parking lots was redeveloped into an open-air "lifestyle center format.

[14][22] Major retailers there include Barnes & Noble Booksellers, Dick's Sporting Goods, and California Pizza Kitchen.

[30] On February 28, 2019, JCPenney announced it would be closing its Lake Grove location on July 15 as part of 18 store closures nationwide.

[32] On February 12, 2020, it was announced Sears would shut down as part of an ongoing decision to eliminate its brick-and-mortar format.

[37] In July 2023, Stony Brook Medicine opened a new outpatient center in the space previously occupied by Sears.