It's over proposed changes to enforcement action for privately rented housing.
Hull City Council is facing a challenge at Leeds High Court today, over their proposed changes to enforcement action for privately rented housing.
Danny Gough, chairman of the Humber Landlords Association, will argue against a change.
He says: "The tenant might not have let the landlord know that there's a problem, maybe the radiator in the back bedroom doesn't work, so that means it would be quite a significant category hazard.
He adds: "The landlord would then have to pay the local authority a fee for the visit, the government guidance is that landlord's should be dealt with informally first."
The current policy requires informal action to be taken against a landlord, if there's an issue with a property.
The HLA say a change will mean the council could jump to formal proceedings, leading to unfair charges.
Hull City Council says it's not appropriate to comment until the legal proceedings are fully concluded.