If you are unfamiliar with the term “legacy business," you may be in good company, as its use is relatively new in preservation and city planning. Legacy businesses are commonly described as long-standing businesses that have been operating in the same community for an extended period, contributing unique value to that community. The first program in the US dedicated to preserving these legacy businesses was started by San Francisco Heritage in 2013 as a pilot program to preserve historic bars and restaurants in a rapidly gentrifying city. Current legacy business programs each define a legacy business in their own way, with some common denominators (see the section below for some examples). Of the legacy business programs interviewed, surveyed, and researched when compiling this toolkit, small- to medium-sized independent or locally owned businesses were the primary targets of their programs, with large, chain, or industrial businesses considered out of scope.