The Spanish design studio Office for Strategic Spaces has renovated a 19th century apartment block in Barcelona. The previously neglected block in the Eixample district has been given the new name “La Carbonería” and has been significantly upgraded as a result, while still showing the original structures of the original building.
The Spanish design studio Office for Strategic Spaces has renovated a 19th century apartment block in Barcelona. The previously neglected block in the Eixample district has been given the new name “La Carbonería” and has been significantly upgraded as a result, while still showing the original structures of the original building.
Barcelona’s Eixample district is famous for Ildefons Cerdà. The Spanish urban planner designed the grid city plan for the district, which was considered an extension of Barcelona from the middle of the 19th century. Cerdà is known for this grid with its large blocks, small connecting streets, main streets and rounded corners and is sometimes even described as the founder of modern urban planning.
However, Cerdà’s new urban planning also led to much uncertainty. For example, the original architect of the La Carbonería apartment block (formerly Casa Tarragó) was forced to plan the façade on all four sides of the building. This was because he did not know where the main streets were and which side the building would face. The planned boulevard was never built, which meant that the façade of this oldest building in the Eixample district ended up facing the wrong way.
The revitalization of the building by OSS (Office for Strategic Spaces) takes these difficulties into account. The architects have restored the façade of the derelict building and exposed its larger windows. Although they look out onto two walls instead of Barcelona’s version of the Champs Elysées, they offer a high quality of life.
The architect Ángel Borrego Cubero from OSS designed the La Carbonería restoration project in the Eixample district. Together with the owner, they dedicated themselves to the building from Cerdà’s time, which was in a very poor condition. Both the façades and the roof were in an advanced state of decay. This was due, among other things, to inadequate renovations and the effects of the weather and lack of maintenance. The inner courtyard of the building was partly covered by extensions. And the original staircase leading to the apartments had been torn down. Openings had been bricked up and converted into kitchen and bathroom windows. Ultimately, the original design of the building was no longer recognizable.
However, the team managed to restore the dilapidated building. In doing so, it was necessary to comply with protection level C of the urban asset – comparable to listed buildings. The original façades and volumes of La Carbonería are protected. Modifications and extensions are prohibited, while complete demolition of the interior would be permitted.
From the outset, OSS decided to preserve or restore as many original elements as possible. This was to increase the cultural value of the building. The architects therefore only removed elements that impaired the original architectural unity of the building. They uncovered the original walls and ceilings, stabilized the building and brought it up to modern standards.
In doing so, they managed to preserve some reminders of La Carbonería’s recent history: The building served as a self-managed social center and contained graffiti by some well-known artists such as Roc Blackblock and Joaquín Vila. The graffiti on the façade had to be removed, but some well-preserved graffiti can still be seen in the apartments. Some works of art can also still be seen in the inner courtyard.
The rear façade was given more prominence and visibility as part of the renovation work. The originally planned open gallery, which was closed as part of the Cerdà plans, can now be seen again. And the flat, accessible roof of La Carbonería now serves as a communal space with a small swimming pool. This has created a meeting place.
With this approach, OSS is showing great respect for the architectural heritage and surroundings of La Carbonería. The renovation of the building is also intended to contribute to the social and economic revitalization of the immediate surroundings.












