Against the backdrop of an acute housing shortage and record low vacancy rates, the Zurich authorities are strengthening their approach to the “fair allocation” of affordable housing, including through restrictions on under-occupancy, so that large apartments are not occupied by single people.
This is not a general ban on the entire rental market, but primarily on the city’s housing stock (municipal, including subsidized, apartments), where strict minimum occupancy rules are already in place: “the number of rooms minus one” equals the minimum number of occupants. For example, a 4.5-room apartment must be occupied by at least three people, and if it remains underoccupied after a set period, the tenant must move out.
The background to the decision is the extremely low proportion of vacant housing. According to city data, as of June 1, 2025, there were 235 vacant apartments in Zurich, and the vacancy rate remained at 0.1%.
At the same time, the city is promoting its updated housing strategy, Programm Wohnen 2026, which confirms the goal of increasing the share of non-profit (gemeinnützig) rental housing to one-third by 2050. The documents indicate that the share of such apartments is currently around 27%, and that around 25,000 additional non-commercial apartments will be needed to achieve the goal.
The city’s housing fund is a separate financial instrument: a model worth CHF 300 million (CHF 100 million in property loans and CHF 200 million in framework loans) has been approved as a mechanism to support the creation of more affordable housing, with funds from the fund to be disbursed starting in 2025.
In a broader context, the city is also discussing the extension of similar principles (including verification of living conditions and minimum occupancy) to the segment of “affordable” apartments owned by private owners, if they are rented out under preferential rules.
