Alienation or encumbrance prior to residential space being made available for use

If, prior to the leased residential space being made available to the lessee for the latter’s use, the lessor has alienated the residential space to a third party or has encumbered it by a right by the exercise of which the lessee is deprived of or restricted in the use contractually agreed for it, then the same applies as in the cases governed by sections 566 (1) and 567 if the acquirer has agreed with the lessor to assume the performance of the duties arising from the lease agreement.