T&T Mart

T&T Mart is a store in owned by Timmy and Tommy. It is the second incarnation of the Nooklings' store, and it appears on Main Street. The T&T Mart is similar in appearance to Nook 'n' Go from, , and. The store features more items than its previous incarnation, the Nookling Junction, and features the Timmy & Tommy shopping catalog, where the player can view and purchase previously obtained items.

T&T Mart is upgraded from the Nookling Junction after the player spends at least 12,000 Bells at the latter, purchases their house, and lives in town for at least ten days. After the player has spent at least 25,000 Bells at the store, the store has been open for at least ten days, and the Garden Center has been open for at least ten days, T&T Mart will close for one day and upgrade to Super T&T.

Once T&T Mart opens, Dr. Shrunk appears outside the player's house to request signatures for the opening of Club LOL.

Selection
T&T Mart sells thirteen items each day, including three furniture items, one wallpaper, one flooring, one Wrapping Paper, one pack of stationery, three tools, two Fortune Cookies, and one Medicine. During certain events the Fortune Cookie will be replaced with event-themed items, such as Fireworks Fountains or Candy.

Staff
Timmy and Tommy alternate running the shop, and only one appears in the shop at a time.