Buildings in Build-a-lot games are used to save time and money, as well as can be necessary to complete the tasks appointed by the mayors in some neighborhoods. The buildings in the original game that serve a function besides being a necessary task are the Bank, Sawmill, and Workshop. The CostMart can be used in Career Mode after all levels are completed super-efficiently in the original game. Cultural buildings are also used in Build-a-lot since they are required on certain levels, but they do not help otherwise.