mietminderung

Rent reduction in Berlin: court rulings from Berlin

48 rulings from courts in Berlin – with reduction rate, case number and link to the decision.

Updated: October 2026 · 119 court rulings

No other federal state appears in our table as often as Berlin: 48 decisions come from Berlin courts – from the local courts (Amtsgerichte) that hear tenancy disputes first, and from the Berlin Regional Court (Landgericht Berlin, since 2024 Landgericht Berlin II), which decides the appeals.

For tenants in Berlin these rulings carry particular weight, because the local courts usually follow the line of their regional court. Advice on rent reduction is available from tenant associations such as the Berliner Mieterverein, the Berliner MieterGemeinschaft and the Mieterschutzbund Berlin – and our generator writes your letter to the landlord in German.

Courts in this selection: LG Berlin (21), AG Charlottenburg (6), AG Mitte (6), AG Schöneberg (5), AG Tempelhof-Kreuzberg (5), AG Wedding (2), AG Köpenick (1), AG Lichtenberg (1), AG Neukölln (1)

Calculate reduction →

49 rulings found

Enforce your right to rent reduction

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

Reduce rent
DefectReductionDescription
100 %Health hazard from toxic mold spores; children needed emergency treatment
100 %Total gas supply failure Sep–Feb
100 %Leaking water meter; 50 dB(A) drying machines made the apartment uninhabitable
100 %Ceilings, walls and floors of every room soaked and moldy; water comes in whenever it rains
100 %Total gas supply failure Sep–Feb
100 %Total electrical failure after a cable fire; no light, hot water or stove
100 %Extremely high levels of carcinogenic PAHs in the indoor air; apartment uninhabitable
80 %Entire apartment permanently damp, musty and infested with mold
75 %Total heating failure Nov–Feb
70 %Heating completely out Oct–Dec during conversion to an apartment gas heating system
70 %Heating failure during the heating season Oct–Apr
50 %Gas supply cut off, no heating or hot water; staggered: Oct 20%, Nov/Mar 30%, Dec–Feb 50%
40 %Noise from two bars on the ground floor from 10 pm to 4 am
30 %Heavy noise from an expanded guesthouse (slamming doors, bathroom use at night)
30 %Attic conversion: scaffolding, covered windows, construction noise, plaster falling from the ceiling
30 %Extensive construction work in the building: vibrations, noise, scaffolding, dust and solvent smell; later 20%
25 %Mold because the landlord did not give adequate ventilation instructions
25 %Kitchen of a 4-room apartment unusable after water damage
25 %Long-term construction noise from a full building refurbishment
20 %Soaked wall in the living room, water stains on the ceiling of the bay-window room
20 %Considerable noise from a hotel that opened in the building after the lease was signed
20 %Construction noise from the neighboring plot; flat rate for the entire construction period
20 %Landlord cut off water and gas; 20% for the missing water supply alone
20 %Elevator out for 16 days; 10th floor (10. OG) of a high-rise
20 %Advertising banner on scaffolding covered 4 of 5 windows and the balcony
20 %Damaged and missing asbestos floor tiles (Floor-Flex); reduction from the start of the lease
15 %Noise and dust from construction work on the neighboring plot; later 10%
15 %Elevator out for 16 days; 6th floor (6. OG)
15 %Asbestos floor tiles (Floor-Flex) with many damaged spots that can release fibers
12 %After modernization, window areas a third smaller in four rooms; 3% per window
10 %Airing the apartment six times a day to prevent mold is unreasonable for the tenant
10 %Airing 6 to 8 times a day to prevent mold is unreasonable
10 %Leaking roof, water coming in until it was sealed
10 %Constant noise from neighbors: arguing, shouting, banging, stomping, slamming doors
10 %Noise from the ventilation system of a shisha lounge on the ground floor
10 %Elevator out of service, 4th floor (4. OG); shut down by the building authority
10 %Elevator out of service since Aug 2019; 3rd floor (3. OG)
10 %Strong smell of decay and feces from the neighboring apartment
8 %Noise from a neighboring refugee shelter in the summer months; balcony unusable
8 %Pungent smell from a bakery on the ground floor in the mornings; later 5%
7.5 %More traffic noise after the road was turned into a motorway feeder; up to 1,000 vehicles/hour
7.5 %Elevator broken for several months after the basement flooded; apartment on the 3rd floor (3. OG)
5 %Temperature regularly only 19 °C
5 %Cellar included in the lease flooded by a burst pipe and unusable
5 %New building: hot water reaches 55 °C only after 65 seconds (DIN 1988-200)
5 %Less daylight after modernization due to insulation, smaller windows and a balcony above
3.5 %Hot water at 40 °C only after a long run-off time
3 %Elevator out of service, 2nd floor (2. OG)
2 %Intercom does not work