Schanzenstrasse 18 and 20, Basel

With a view to raising their standard long-term, the properties were extensively renovated. The service risers and electrical installations were renewed and the kitchens and bathrooms were replaced. The buildings were energetically improved through new windows, shutters and basement and attic insulation. The apartment doors were replaced with acoustic fire-doors, while still maintaining the original character of the buildings. The superior aesthetic qualities of Schanzenstrasse 18 were emphasised by natural-coloured wooden windows and shutters.
Additional measures at Schanzenstrasse 20 included the strengthening of the structural system, the rearranging of the attic apartment floor plan, an extension of the stairwell into the attic, the partial raising of the roof and a new entrance area.