28 CFR Part 36 Nondiscrimination on the Basis of Disability by Public Accommodations and in Commercial Facilities (2010 ADA Title III Regulations with amendments issued through Dec. 2016)

(d) When the standards of the Act against which a code is deemed equivalent are revised or amended substantially, a certification of equivalency issued under the preexisting standards is no longer effective, as of the date the revised standards take effect. However, construction in compliance with a certified code during the period when a certification of equivalency was effective shall be considered rebuttable evidence of compliance with the Standards then in effect as to those elements of buildings and facilities that comply with the certified code. A submitting official may reapply for certification pursuant to the Act's revised standards, and, to the extent possible, priority will be afforded the request in the review process