Study shows enormous densification potential
A new study entitled "Potential for sustainable internal development" is the first to comprehensively identify how much living space and workspace can be created through targeted redensification on existing settlement areas without building on more land.
Overall, there is sensible development potential in 30% of the existing settlement areas, which could provide space for 2 million new residents and 1.1 million jobs if a realization rate of 70% is achieved.
The study, carried out by Sotomo on behalf of Urbanistica, suggests that sustainable inner-city development can only succeed if density and settlement quality are combined. Pure densification in locations with good traffic and infrastructure is not enough. Rather, improved local amenities, more green spaces, suitable quiet areas and a differentiated mix of uses must ensure quality of life and social acceptance.
Agglomerations as focal points and areas of opportunity
Although cities such as Bern and Zurich have the highest potential per area, the greatest absolute potential lies in the agglomerations. Up to 870,000 people could find new living space there through internal development alone. Municipalities such as Schwerzenbach, Opfikon and Vernier lead the ranking in terms of their development potential.
Challenges in terms of settlement quality
At the same time, the study reveals considerable quality deficits, particularly in agglomerations and cities. Problems include an unbalanced mix of uses, noise and insufficient greenery in urban areas as well as a lack of local amenities and access to recreational areas in peripheral zones. There are structural and social deficits, particularly in monofunctional commercial areas and parts of western Switzerland.
Practical application and new business areas
For investors and planners, the study offers a precise “treasure map” for identifying clearly usable properties and areas down to zone level. This facilitates strategic decisions and minimizes investment risks. In addition, the data supports the argumentation towards authorities and the population, which can accelerate the process of planning and approval procedures.
The upgrading of existing sites opens up major opportunities for the construction and real estate industry. The transformation of monofunctional commercial areas into lively, mixed neighborhoods is considered a model for success and an important response to the housing shortage and rising construction costs.
Internal development as the key to sustainable growth
The study focuses on the fact that internal development is not just a question of space, but above all a question of quality. By concentrating on already developed areas, infrastructure costs can be reduced and urban sprawl curbed. The challenge remains to create social acceptance for redensification and to remove structural barriers. This is a prerequisite for sustainable and liveable urban development in Switzerland.
This study therefore provides a promising, data-based foundation for future urban and regional development in line with the Swiss Spatial Planning Act.