The U.S. Federal Trade Commission and the State of Colorado have filed a complaint against Greystar, a multi-family rental property manager, alleging that it deceived consumers about rental costs with hidden fees,

Colorado and the FTC say Greystar Real Estate and Property fraudulently advertises low rent prices to potential customers, only to add tens if not hundreds to the monthly rent cost with hidden fees.

Greystarwas sued by the Federal Trade Commission Thursday over allegations that the nationwide manager of apartment buildings, stuck renters with millions of dollars in hidden fees.