(1) Any claim involving property rights ("vermögensrechtlicher Anspruch") may become the subject matter of an arbitration agreement. An arbitration agreement regarding claims not involving property rights has legal effect insofar as the parties are entitled to settle regarding the object of the dispute.
(2) An arbitration agreement regarding legal disputes relating to the existence of a tenancy relationship for residential spaces in Germany is ineffective. This does not apply insofar as the residential premises concerned are of the type defined in section 549 (2) nos. 1 to 3 of the Civil Code.
(3) Legislative provisions not contained in the present Book, according to which disputes may not be submitted to arbitration or may be submitted to arbitration only subject to defined prerequisites, remain unaffected.