Provisions on apartment rentals

The Kalkbreite Cooperative apartments are exclusively rented to members. Every natural person or legal entity is free to apply for membership (Become a member). The General Assembly of Shareholders enforces the rental regulations for the apartments (german only). It governs the objectives and the implementation of social mixing as well as the composition and working methods of the letting commission. The GA also oversees occupancy and use of apartments and much more.

Diverse community


The cooperative aims to achieve a social mix among the residents that corresponds to the social mix of the Swiss population. In addition, families and households that are disadvantaged on the free housing market are given special consideration in the Cooperative Kalkbreite:

  • Mixing of age and life phases: The aim is to create a balanced aged mixed when renting the various types of flats.
  • Mixing income classes: Due to their location and orientation, the residential properties have different square meter prices. This broad rent range enables social mixing according to income. In addition, the Kalkbreite residential and commercial building has eleven subsidized apartments.
  • Promoting underprivileged households: Through a partnership with the Domicil Foundation, five apartments are sold to tenants who are disadvantaged in the housing market.

The letting commission analyzes the social mix of the residents at regular intervals and compares this with the social mix of Switzerland. It reports to the General Assembly on the status of the residential composition and makes sure it corresponds to the target figures.

Download rental regulations (valid from 20.6.2018, german only)

Minimum occupancy


The Kalkbreite Cooperative wishes to conserve space as a resource and use its property as densely as possible. Minimum occupancy regulations therefore apply to the apartments, which allow an average maximum living space consumption of 35 m2 per person (including communal areas). In principle, the number of individual rooms in an apartment must correspond to the number of people living in the apartment. For household constellations, in which the living space is only used for a limited period of time, such as weekly residents or patchwork families, such tenant must be present at least 50% of the time.

If the number of persons is less than the number of individual rooms, the apartment is considered underoccupied. If an apartment is underoccupied, a rent surcharge based on the income of the tenants must be paid. If after two years the apartment is still underoccupied, the tenants must move out even if no other apartment is available on Kalkbreite property.



With very few exceptions, the Kalkbreite estate offers barrier-free access to common outdoor and indoor spaces, to commercial premises and apartments as well as to stairwells, lifts and gardens. Within the apartment, almost all room arrangements, bathrooms and kitchens meet the space requirements for wheelchair users or are adaptable. Usage-specific requirements such as the height and placement of the fittings were individually adapted for the first tenants upon request. However, the requirements of different users also led to conflicting objectives during the planning phase. In terms of construction, the cooperative has tried to find sensible compromises that allow free access to as many people as possible.



The keeping of domestic animals is generally permitted at Kalkbreite, but limited. The detailed regulations are stated in the pet regulations (german only). Permission is given for a maximum of four dogs and eight outdoors cats. The keeping of cats and dogs must be reported to the office in advance. The installation of cat doors and cat ladders is not permitted. Cats must independently find their way from the staircase to the three cat doors leading into the exterior.