36 CFR Parts 1190 and 1191 ADA and ABA Accessibility Guidelines - Preamble (Discussion of Comments and Changes)

Alterations to areas containing a primary function must include an accessible path of travel to the altered area unless it is disproportionate in cost or scope (202.4). This provision is intended to ensure that such areas, when altered, are on an accessible route and are served by accessible rest rooms, telephones, and drinking fountains. Requirements specific to altered residential dwelling units in section 233.3 effectively substitute for this provision by ensuring an accessible route to those dwelling units required to comply as part of an alteration. For consistency and clarity, the Board has exempted residential dwelling units from the requirements for altered primary function areas.