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Rent reduction in North Rhine-Westphalia: court rulings from North Rhine-Westphalia

24 rulings from courts in North Rhine-Westphalia – with reduction rate, case number and link to the decision.

Updated: October 2026 · 119 court rulings

24 rulings in our table come from courts in North Rhine-Westphalia. Many decisions from NRW are freely available in full text in the state's case-law database (NRWE) – the case numbers in the table lead to each decision.

In NRW, advice on rent reduction is available from the local tenant associations organized in the Deutscher Mieterbund Nordrhein-Westfalen – and our generator writes your letter to the landlord in German.

Courts in this selection: AG Köln (7), AG Aachen (2), LG Köln (2), AG Bielefeld (1), AG Bochum (1), AG Bonn (1), AG Dortmund (1), AG Gelsenkirchen (1), AG Leverkusen (1), AG Münster (1), AG Steinfurt (1), LG Bonn (1), LG Dortmund (1), LG Essen (1), LG Kleve (1), LG Paderborn (1)

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24 rulings found

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Create a free defect notice with a rent reduction demand — backed by these court rulings.

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DefectReductionDescription
100 %Apartment uninhabitable after water damage from corroded heating pipes; 5% afterwards for a musty smell
100 %Khapra beetle infestation; apartment uninhabitable because of harmful pest-control chemicals (June–Oct 1996)
80 %Mold in a studio apartment; two drying machines, hardly any room to move
75 %Mold in every room of a newly built apartment at first occupancy
50 %Heating broken from November and again in February and April; apartment could not be heated
50 %Carpet completely soaked; water dripping through the ceiling
50 %Landlord secretly kept a key and entered the apartment without permission
30 %Mold from thermal bridges in the kitchen, bedroom and children's room; landlord did not disprove a structural defect
30 %Living room unusable due to water damage
25 %Damaged bathroom and drafty, poorly closing windows (combined rate)
20 %Room temperature only 16–18 °C
20 %Badly soaked walls in an old building with salt efflorescence and crumbling plaster, even without mold
20 %Frequent loud parties at weekends until late at night
15 %Noise from a metal gate
10 %Mold on the exterior wall of a storage room
10 %Brown water from several taps, cold water in the bathroom cannot be regulated
10 %Phone and internet connection dead for 14 months due to faulty in-house wiring
10 %TV reception promised in the lease was discontinued
10 %Mice and cockroaches
10 %Rats in the courtyard behind the apartment
7.5 %No hot water between 10 pm and 7 am
7 %Black mold on the silicone joints of the windows
5 %Discolored tiles after a repair
5 %Silverfish for at least a year in the living rooms, kitchen and hallway