This small tower ‘ Mixed use Strasbourg Building ‘  has been built in the historic Krutenau district in Strasbourg. The city has a number of “hollow teeth” – vacant plots that are too small to be of interest to promoters. In exchange for an attractive price, the consultation called for the production of an exemplary building guaranteeing the achievement of high energy performances, the use of bio-sourced materials, and a mixed-purpose project.

Courtesy of Dominique Coulon & associés – Photographs : Eugeni Pons, David Romero-Uzeda

On a plot measuring just 120 square metres, we proposed a programme of offices and accommodation, with a kitchen garden and an organic swimming pool on the topmost terrace.

Courtesy of Dominique Coulon & associés – Diagrams

The skin is in scorched wood (larch), a technique often utilised in Japan that makes the material long-lasting by scorching its outer surface. The facade masks the interconnection of the programmes. The openings in the walls appear to be random, not corresponding to any functional requirements, and their different sizes make it difficult to distinguish the different levels of the building. This is contained freedom. Towards the top, a volume of rough concrete pivots through 10°, appearing to detach itself from the black mass of the wood base and producing a dynamic corner. The orange and silver-coloured projecting blinds add a touch of colour to the strange outline of this dark building.

Courtesy of Dominique Coulon & associés – Photographs : Eugeni Pons, David Romero-Uzeda

The building is generous with the street. Large bay windows offer views into the scale-model workshop, which is slightly below street level, so that the activity of an architect’s office can be seen. This transparency is often seen in Scandinavian countries, where people place their most attractive belongings next to a window, as if offering them to the street outside.

Courtesy of Dominique Coulon & associés – Photographs : Eugeni Pons, David Romero-Uzeda

Like Loos’ Raumplan, the spaces interconnect in a complex fashion, with double heights lending fluidity to the whole. The spacing between the different floors differs according to the spaces, giving them their proper proportions. On the inside, the materials used are sturdy and rustic. The concrete floors have merely been polished. Shelving and cupboards are in wood; the staircase is in untreated metal. The building appears to play with the contradictions in the situation, condensing its complexity and offering a joyful rendition.

Courtesy of Dominique Coulon & associés – Photographs : Eugeni Pons, David Romero-Uzeda

Project Info :

Architects : Dominique Coulon & associés
Project Year : 2015
Manufacturers : CBA
Project Area : 500.0 m2
Budget : 1 320 000 € H.T
Cost Estimator : E3 Economie
Electrical Engineer : BET G. Jost
Structural Engineer : Batiserf ingénierie
Mechanical Pulmbing Engineer : Solares Bauen
Photographs : Eugeni Pons, David Romero-Uzeda
Construction Site Supervision : Olivier Nicollas, Javier Gigosos-Ruipérez
Project Location : 13 Rue de la Tour des Pecheurs, 67000 Strasbourg, France
Architect in Charge : Dominique Coulon, Olivier Nicollas, Benjamin Rocchi, Steve Letho Duclos
Architects Assistants : Javier Gigosos-Ruipérez, Fanny Liénart, Diego Bastos-Romero, Jean Scherer

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