§ 109

If a case is brought regarding the implementation of improvements under § 105, the rent tribunal may oppose the implementation if the improvement is deemed inappropriate considering the property's age, location, and condition. The same applies if the improvement is not expected to result in a suitable increase in use value considering the property's and the respective rooms' character, condition, layout, and equipment. It may be considered whether the changes that the measures will cause in the individual rented rooms are deemed reasonable in relation to their previous suitable use.

Stk. 2.If the landlord implements an improvement that the tribunal has opposed, the landlord cannot demand a rent increase for the improvement.

Stk. 3.Bringing a decision under §§ 89 or 90 of the Housing Act, whereby the tribunal has approved the implementation of an improvement, has a suspensive effect.