From the Ballston BID’s website: “The Ballston Business Improvement District, or BID, is a 25-block area within the Ballston neighborhood comprised of both commercial and residential properties. The BID is funded by a special tax paid by commercial property owners within our set boundaries. That tax makes up the Ballston BID budget, and funds various projects to maintain Ballston as an ideal destination to live, work, shop, learn and play.”