Conversion Gondrand

The former Gondrand building at Uferstrasse 70 in Basel served as a warehouse and logistics centre until 2023. It was then converted into the current mixed-use commercial building ‘U70’. New spatial structures allow for subdivision into individual rental spaces, which are deliberately designed to be flexible and can be adapted as needed.

In line with the canton’s sustainability goals, the conversion focused on achieving the best possible CO₂ balance. On the one hand, the potential for reusing existing components was exploited, and on the other hand, attention was paid to a good CO₂ balance when selecting new materials, e.g. simple, future dismantlability. Zirkular’s assignment began with a potential analysis that identified various options for the renovation project – it explained key principles, parameters and processes and served to determine which components could be reused.  

A building screening was used to determine which existing components could be reused in the renovation project. Additional components from external sources were used, such as cement floor slabs, windows, acoustic elements, OSB boards, sanitary appliances and lighting fixtures. For the components found, all necessary implementation steps – from professional dismantling to reinstallation – were coordinated and supervised by Zirkular.