A terrace house from 1956 was chosen as an example for the renovation. To implement it, we developed a completely new type of facade construction, which achieves the u values of a passive house with a thickness of only 9 cm. In addition, a thermal solar absorber was fully integrated into the southern facade, which heats the domestic hot water, assists the space heating, and reduces the thermal losses of the facade practically to zero. The new windows, which open outward, were constructed in the plane of the insulating envelope and all thermal bridges were eliminated.