The limitation of rent increases by a maximum of 15 percent within three years is valid. This is the decision made by the Federal Court in November 2015. A landlord in Wedding wanted to increase the rents by 20 percent and failed with his claim to go over the threshold regulation from May 2013.
The tenant agreed only to an increase of 15 percent. The judges were not open to the landlord´s arguments that the Senate of berlin covers the entire city of Berlin with the regulation instead of supplying the law to specific districts. Following the courts argumentation the capping or threshold limits regulation in Berlin does not infringe fundamental rights of the landlord.