The extension of the house is made as a complement to an unattractive and poorly resolved house, built in 1983, in the Barcelona town of Caldes de Montbui.
The intervention Alventosa Morell Arquitectes responds to the commission to carry out a small reform of the existing house and an extension to install its professional office, along with a retaining wall 6 meters high that resolves the unevenness of the existing topography.
 

Description of project by Alventosa Morell Arquitectes

1.- INTRODUCTION

The clients needed a small restoration of a house built in 1983 and, specially, the creation of a new space to work.

The building was very badly adapted to the land, the original topography. It was divided into two platforms separated by a retaining wall of 6 metres height. This wall generates a very important visual impact and provokes the isolation of two platforms.

The house is located on the superior platform, which is built with ceramic brickwork without interest, with too many constructive solutions for the different façades. All its perimeter is surrounded by a narrow terrace, so with a limited use.

On the inferior level there was a garden and a swimming pool in a bad condition.

Although the exterior space had many possibilities to enjoy it, it was completely separated from the house by retaining wall and the two platforms were communicated by a simple stair not facilitating their use.

Els clients  necessitaven una petita reforma d’una casa existent construïda l’any 1983 i, sobretot, una ampliació per a poder tenir un nou espai de treball.
 
2.- THE PROJECT’S PRIMARY GOALS

The aim of the project was to completely rehabilitate the building, adapting it to the clients’ requirements.

The program set out to solve the segregation between the two platforms, creating a new connection with the main garden, that could decrease the visual impact of the retailing wall at the same time; and also generating a new space to work.

To achieve this transformation we have designed a light metallic stair that is separated of the retaining  wall, generating a new level between the two platforms, where we have situated the new space to work.

This new space is a volume made of wood that changes the vision of the retaining wall, and creates three new spaces in addition:

  • A new terrace at the level of the original house, that changes the use of the previous narrow one.
  • A new wooden volume, situated in the middle of the two old levels, creating a new studio directly opened to the main garden. It is an autonomous element and bioclimatic which it means, that it does not need heating or refrigeration. Such space is justified by its relative litheness and the desire to establish a provoking dialogue with the original structures.
  • A new frame, a portico, situated at the level of the inferior garden, where the swimming pool is. This space allows clients the possibility to enjoy of a sunny terrace. 

3.- A NEW ROUTE

The new access to the main house is designed as a protruding balcony made by a simple rectangular angle iron that supports the galvanized rebar in order to generate a new exterior space full of nuances of shadows; and another more positive vision of the retaining wall.

On the contrary, the new space to work is a compact wooden volume, separated from the inferior level by a metallic structure. It is built with the frame System and the wooden slats of the facade provides a screen for preserving privacy, while also serving as solar protection in the summertime.

All in all, with a simple volume and  the simplicity of a new connection between the different levels  of the plot we have achieved the total renovation of the previous building, and also got a pleasant house to live.

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Architects
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Alventosa Morell Arquitectes. Architects.- Marc Alventosa, Xavier Morell.
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Industriales Specialized workers
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Paleta / Palette: Façanes Alamo SL. Cerrajería / External staircase and iron structure: Serralleria Metcor SL. Carpinteria Exterior Madera / Wood Exterior Carpentry: Soldevila S.L. Fachada, tarima, falso techo, mesa y estanteria de madera / Facade, platform, false ceiling, wooden table and shelf: NixProfusta S.L. Instalador / Electrical installations: Eric Madrenas
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Collaborators
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Structure.- Crespiera Simó Diagonal Arquitectura SLP.
Quantity survayor.- Marga Bernadó.
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Location
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Caldes de Montbuí, Barcelona, Spain.
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Photography
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Alventosa Morell Arquitectes are an architectural firm based in Barcelona and Lleida by Josep Ma. Alventosa Cuadrat, Marc Alventosa Zaidin and Xavier Morell Jané. They are specialize in projects and constructions based on efficient climate studies and thermal analysis. They provide energy savings of over 70%.  They have experience in residential architecture, school, health, Hotel, restoration of listed buildings and managing budgets for optimal economic efficiency of the work.
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Published on: January 22, 2018
Cite: "A wall, a volume and a stair. JC house by Alventosa Morell Arquitectes" METALOCUS. Accessed
<http://www.metalocus.es/en/news/a-wall-a-volume-and-a-stair-jc-house-alventosa-morell-arquitectes> ISSN 1139-6415
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