Lower rent
Many rented apartments are specified according to the lease with incorrect m² numbers, especially in attics with sloping roofs measuring is often difficult for laymen.
That's why: let the appraiser measure the usable living space and compare it with the rental agreement.
If the rental space indicated in the rental agreement is too high, you can take legal action and recover part of the last rent and / or request a rent reduction.
Which court is responsible, I unfortunately do not know, so in case of the case visit a lawyer.
