(2023) How are communal areas treated?

Communal areas (e.g. corridor, bathroom) in a sublet flat that can be used by overnight guests must not be included in the calculation solely based on the proportion of living space.

The share of living space for these areas must also be divided among the number of residents in the household.

Example: The communal areas in a 100 sqm flat occupy a total of 30 sqm, and in addition to the landlady, her daughter and the subtenant live in the flat. In this case, 10% (30 sqm / 100 sqm / 3 people) of the expenses for communal areas can be claimed.