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 aim of the cooperative is to achieve social diversity in housing occupancy to accommodate various phases of life, income or assets. In addition, families and households that are disadvantaged on the free housing market are given special consideration in the Cooperative Kalkbreite. The strategy is based on a few rules that do not specify too rigid of a policy:

  • 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: The aim is to achieve a broad distribution across income classes. The cheaper flats of a certain type are intended for low-income households.
  • Promoting underprivileged households: low-income groups should complement the social mix, but not shape it.
  • Promoting internal moving: Internal moving is encouraged, particularly when residents loose a roommate or a new phase of life emerges. This is intended to ensure that letting principles are maintained in the long term.

The letting commission monitors the social mixing over the long term. It reports to the General Assembly on the status of the residential composition and makes sure it corresponds to the target figures. The Kalkbreite estate aims to achieve a mix in accordance with the Swiss average; appropriate mix for the first letting of the Zollhaus property is being drafted (as of May 2018, further information (german only).

Through a partnership with the Domicil Foundation, five apartments have been sold to tenants who are disadvantaged on the housing market.

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. If the number of persons is less than the number of individual rooms, the apartment is considered underoccupied. In the search


for new roommates, tenants of are asked to pay attention to the mixing level for the respective housing estate. 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. 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.



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. The detailed regulations are stated in the pet regulations (german only). The keeping of cats and dogs must be reported to the office. Permission is given for a maximum of four dogs and eight outdoors cats. The pet owners share pet costs. A fee of up to CHF 10 per month for a cat must be expected. The installation of additional 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.