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

The antitrust and consumer protection agency accused Greystar Real Estate Partners of deceptive pricing, charging tenants millions of dollars in unadvertised 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,

The FTC goes on to allege at some Greystar-managed properties, hidden fees are bundled together and referred to collectively as an "amenity fee", "community fee", or "lifestyle fee" without being further explained on a tenant's account statement.