28 CFR § 35.170 - Complaints.
(a) Who may file. An individual who believes that he or she or a specific class of individuals has been subjected to discrimination on the basis of disability by a public entity may, by himself or herself or by an authorized representative, file a complaint under this part.
(b) Time for filing. A complaint must be filed not later than 180 days from the date of the alleged discrimination, unless the time for filing is extended by the designated agency for good cause shown. A complaint is deemed to be filed under this section on the date it is first filed with any Federal agency.
(c) Where to file. An individual may file a complaint with any agency that he or she believes to be the appropriate agency designated under subpart G of this part, or with any agency that provides funding to the public entity that is the subject of the complaint, or with the Department of Justice for referral as provided in § 35.171(a)(2).