Renovations take many forms: some command immediate attention, while others work quietly behind the scenes. A striking case of the latter is a Cologne-Hahnwald bungalow that architect Markus Schebalkin has deftly transformed into a spacious family home spanning over 320 m² through a thoughtfully executed extension and interior reorganization.

The original bungalow was part of a complex of five houses designed by Cologne architect Hans Kröber in the 1960s. The developers placed particular emphasis on sustainable expansion that would not seal off any further areas and at the same time meet high energy standards. Accordingly, the renovation was carried out in such a way that the basic concrete structure of the existing building was first exposed. The supporting structure was then supplemented with a lightweight construction made of steel and wood. A straight staircase clamped between two wall panels was cleverly added. One highlight is the retention of the wide, cantilevered roof to the south, which allows for generous, covered terrace use on the upper floor – with structurally effective sun protection and impressive views of the garden. The northern façade was deliberately designed to be minimalist, with only the most necessary windows to minimise heat loss. The façade also derives its character from the exciting materiality of mineral plaster, clinker and glass surfaces framed by aluminium frames. While the entrance hall, cloakroom, kitchen and double garage extension on the ground floor face north, the spacious living and dining area opens up to the south with floor-to-ceiling sliding windows facing the garden and a newly arranged fireplace.

The upper floor houses the children's rooms with bathroom, the separate parents' wing with master bathroom and sauna, as well as a dressing room and fitness room. The minimalist design was also consistently maintained in the interior design. Generous sightlines and the seamless cast floor made of fully recyclable natural rubber underline the open, flowing architecture on both floors. The sophisticated lighting was designed in cooperation with a lighting designer. Last but not least, the building also impresses in terms of energy efficiency: a geothermal heat pump provides heating, hot water and cooling.

www.architektschebalkin.eu

Photography:
Silvia Bins
www.fotostudiobins.de

(Featured in CUBE Cologne Bonn 03|25)