In Zurich-Wiedikon, an old office building was converted into a modern apartment building with 15 stylish city apartments. Thanks to innovative solutions such as cantilevered balconies without supports and cleverly integrated wet rooms, attractive and sustainable living space was created in the heart of the city. The project sets new standards for urban densification and modern architecture.
Change as an opportunity
The conversion of an old office building from 1973 on Zurlindenstrasse in Zurich-Wiedikon into a modern apartment building with 15 stylish city apartments and attractive commercial space on the ground floor is a prime example of the successful interplay between visionary investment strategy, professional construction management, and forward-looking urban development. This project demonstrates how investors, working together with experienced construction management, can create sustainable and attractive real estate assets that meet both market needs and the requirements of a modern city. It also shows how a smart approach to existing properties can open up new perspectives for housing, sustainability, and urban quality of life.
Decision basis: why repurpose?
In light of the changing world of work and the trend toward home office, many office spaces in Zurich and other cities are underutilized or even vacant. At the same time, the demand for centrally located housing is high and continues to rise steadily. Analysis of the real estate market and a forward-looking site assessment made it clear: demand for high-quality urban apartments – especially with flexible living concepts such as studios and two-room apartments – is strong, while suitable spaces are scarce.
Another key factor was the attractive location in urban Wiedikon, offering excellent public transport connections, diverse leisure opportunities, and a vibrant neighborhood. As managing director of the Zurich investment foundation, Zurich Invest proposed to the “Real Estate Commercial Switzerland” investment group to realize the potential of the existing building and, through repurposing, make a sustainable contribution to urban densification in the city center.
Challenges of the transformation
Complexity of the existing structure
Converting an office building into contemporary living space always presents challenges. The original building structure was designed for large, open office areas and did not meet the requirements for light, privacy, and room layout of modern apartments. The challenge was to use the available space efficiently while ensuring sufficient daylight, attractive floor plans, and high-quality fittings.
Technical innovation: cantilevered balconies without supports
A particular highlight – and a technical masterpiece – were the new cantilevered balconies without supports. Since the original facade did not allow for conventional balconies, the architects opted for an innovative solution: the balconies were attached using steel beams drilled deep (about 1.5 meters) into the existing structure and do not require any supports. This approach required precise structural calculations and the highest level of execution quality to ensure both safety and architectural integration.
Special anchor and dowel technologies were used to secure the beams and the facade was additionally reinforced at critical points. These cantilevered balconies not only provide private outdoor space for residents but also make a striking architectural statement.
Project implementation: teamwork and innovation
The entire project was completed both on time and within the specified budget. Strategic planning began in summer 2020. The project and evaluation procedures, as well as the project design, took place in spring 2021. After the tendering process and building permit were completed in 2022, construction work was able to start as planned in March 2024.
The project's success is the result of close collaboration between architects, engineers, site management, and craftsmen. The planning phase was characterized by intensive coordination to meet all construction and permitting requirements while also creating the highest possible residential quality. Modern building standards, energy efficiency, and high-quality materials were just as much a priority as the contemporary fittings of the apartments.
The result: urban living space with added value
The tenant fit-out was successfully completed in mid-2025, and thanks to high demand, all units were handed over to tenants before the scheduled move-in date in July 2025.
The 15 city apartments – including various studio and two-room types – stand out with bright, open floor plans, modern kitchens and bathrooms, as well as unique cantilevered balconies without supports. The commercial space on the ground floor, already leased to a yoga studio, further enlivens the neighborhood and creates synergies with the local community.
The conversion has transformed a little-used office complex into a sought-after residential and commercial building that meets the needs of today’s urban population: urban, modern, sustainable, and vibrant.
Conclusion: a model for sustainable urban development
This project impressively demonstrates how creative planning and technical innovations can transform existing buildings into attractive living spaces. Smart repurposing not only helps reduce land use and embodied emissions, but also enhances urban quality of life. With this project, Zurich Invest sets an example for responsible urban development and proves that investment, innovation, and sustainability can be successfully combined.
