An unlimited residence title such as a permanent residence permit should only be granted if the person concerned and his or her family have sufficient living space at their disposal. The reason for this is that permanent residence permits should only be issued if all basic needs are secured. This also includes the availability of sufficient living space.
The key question that arises here is what exactly is meant by "sufficient" in this context. First of all, it should be noted that a certain apartment size does not have to be achieved. The required apartment size and condition depends entirely on the individual case and is mainly based on the size of your family.
The standard for determining sufficient living space is set out in Section 2 (4) of the Residence Act (AufenthG). According to this, living space is not sufficient if it does not meet the legal requirements that also apply to Germans in terms of quality and occupancy. Children under the age of two are not taken into account in the calculation.
As a rule, the living space is sufficient if twelve square meters are available for each family member over the age of six and ten square meters for each family member under the age of six. In addition, it must be possible to use ancillary rooms such as the kitchen, bathroom and toilet to an appropriate extent. Proof of sufficient living space can be provided in the form of a rental agreement, purchase contract or a certificate of occupancy from the landlord.