The property owner pulled permit B09001673 in July, as noted below by Lotsabogeys. The party store had a big space, and Brendela wrote below that one of the Party, Party, Party cashiers told her that the landlord wanted to split the space in two.
The Columbia Mall Five Guys just opened in July. This second location seems to serve a very different area. It will also be close enough to Mango Grove to create some interesting options for a "vegetarian Indian and then a burger" adventures.