You can call toll-free 1 (800) 669-9777. If you believe your rights may have been violated, we encourage you to report housing discrimination.You can file a complaint online on the US Department of Housing and Urban Development website. Phone: Call toll-free at 800.877.0246. You can file a complaint right online! Or you can call the Housing Discrimination Hotline: (800) 669-9777. Note that you have up to one year after the last incident of discrimination to file an administrative complaint, and up to two years to file a court case. If you are filing with HUD, you must complete an online form or call the HUD Office of Fair Housing and Equal Opportunity to request a complaint form. Housing Choice Voucher Allegations. Instructions: Please fill out this form completely, sign and submit it online.