U.S. property management company Greystar swindled renters across the country out of hundreds of millions using deceptive advertising and hidden fees, according to a lawsuit filed Thursday by the U.S.

Greystar is the largest property management company in the U.S. and operates thousands of properties across the Carolinas.

The Federal Trade Commission will reportedly allege the apartment management company falsely advertised rental prices by not including mandatory 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.

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,

Greystar is the largest property management company in the U.S. and operates thousands of properties across the Carolinas.

Colorado Attorney General Phil Weiser and federal regulators filed a joint lawsuit against the largest apartment owner in the country on Thursday, accusing it of intentionally misleading tenants about the cost of its rentals.