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Vertical extension & energetic retrofit of 1950s apartment buildings

A group of 1950s apartment buildings in the centre of Bolzano, Italy have undergone an impressive refurbishment with a focus on energy efficiency, upgrading from CasaClima certification class G to A. The building renovation project also enhanced aesthetics and function, whilst increasing capacity with 14 new housing units added to the existing buildings.

  • View of buildings on Via Aslago, showing the new top floor vertical extension, and the new facade's recessed window surround details in contrasting grey render finishes

    View of buildings on Via Aslago, showing the new top floor vertical extension, and the new facade's recessed window surround details in contrasting grey render finishes. Photo: Andrea Zanchi

  • View of the buildings on Via Aslago showing the new oversailing vertical extension.

    View of the buildings on Via Aslago showing the new oversailing vertical extension. Photo: Andrea Zanchi

  • View of the side of the buildings on Via Aslago, Bolzano, Italy, showing the new facade's window details in contrasting grey render finishes, and new balconies and loggias

    View of the side of the buildings on Via Aslago, Bolzano, Italy, showing the new facade's window details in contrasting grey render finishes, and new balconies and loggias. Photo: Andrea Zanchi

  • View of original building at Via Aslago, before renovation and vertical extension

    View of original building at Via Aslago, before renovation and vertical extension

  • View of original building at Via Aslago, after renovation and vertical extension

    View of building at Via Aslago, after renovation and vertical extension. Photo: Andrea Zanchi

  • Surface detail of grey StoSignature render in its freeform brushed pattern

    Surface detail of grey StoSignature render in its freeform brushed pattern

  • A model showing the renovated buildings in the context of its neighbourhood, showing the photovoltaic panels and green roofs

    A model showing the renovated buildings in the context of its neighbourhood, showing the photovoltaic panels and green roofs

  • Illustration of the original building, roof removed, and the new facade and vertical extension details added

    Illustration of the original building, roof removed, and the new facade and vertical extension details added

Via Aslago Collage

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The in-depth Project [insights] PDF includes more details around the following topics:

  • Energy consumption reduced by 40 to 60%

  • Vertical extension with 14 new dwellings (20% increase)

  • Improved facade aesthetics and functionality including integrated sun shutters

  • Greening and energy generation

Roberto Pauro and Andrea Fregoni

Area Architetti Associati

Roberto Pauro and Andrea Fregoni

An old building with a new envelope

  • A view of some of the buildings in Via Aslago, Bolzano, Italy before renovation and vertical extension
    Before renovation with the original roof
    A view of some of the buildings in Via Aslago, Bolzano, Italy after renovation and vertical extension
    After renovation & vertical extension. Photo: Andrea Zanchi

Meet the architect:

Area Architetti Associati

Energetic retrofit and vertical extension of a housing estate in Bolzano, Italy (04:05)

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Discover more about the concept and execution of the transformation of these buildings, their new energy efficient facade and vertical extension in our Project [insights] document.

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