All alterations that could affect the usability of a facility must be made in an accessible manner to the maximum extent feasible. For example, if during renovations a doorway is being relocated, the new doorway must be wide enough to meet the new construction standard for accessibility. If a new sidewalk is installed, the new sidewalk must be accessible. When alterations are made to a primary function area, such as the lobby of a bank or the dining area of a cafeteria, an accessible path of travel to the altered area must also be provided. The bathrooms, telephones, and drinking fountains serving that area must also be made accessible. These additional accessibility alterations are only required to the extent that the added accessibility costs do not exceed 20% of the cost of the original alteration.