Redevelopment of a residential building with hemp

Last modified by the author on 10/10/2016 - 10:27

Extension + refurbishment

  • Building Type : Terraced Individual housing
  • Construction Year : 2015
  • Delivery year : 2015
  • Address 1 - street : Via Pomposa 30 37134 VERONA, Italia
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 83 m2
  • Construction/refurbishment cost : 105 000 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 1265.06 €/m2

Proposed by :

  • Primary energy need
    (Calculation method : )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

The project concerns the restructuring with partial extension of a single house dating back to the 60s, in a residential neighborhood just outside the center of Verona. The original building was made up of a brick masonry structure with masonry floors and base in stone and lime. The design choice has been to explore the use of natural materials both for the structural part of enlargement, either for the reconstruction of the internal and external finishes. For this work has been made a study project  and use of: biobricks hemp with wooden structure; wood-fiber panels for the isolation of the new part of the attic; clay for the painting of the interior walls; lime for exterior walls; wood for interior floors; solid brick foundation for the curbs. It has been also an interesting experiment of building techniques from the past and reinvented to meet the current energy standards. Were involved companies and manufacturers able to work with green building, through an open approach to research and experimentation with new techniques. The final aspect of the work is simple and elegant, the surfaces have a material grit which highlights, the use of materials from the soil like clay. It was accomplished thorough research on construction materials to identify those with a lower embodied energy, in particular with respect to the extraction and production area.

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Data reliability





Contracting method

Build and sell construction

Owner approach of sustainability

The goal of the owner was the functional restructuring of their home with the application of incentives for energy saving. This is why the initial objective of the project was the realization of a nearly zero energy building with low embodied energy materials. This was the first project of green building, following experience gained in the implementation of low-emission buildings but with the use of chemical-industrial origin materials

Architectural description

Users had the need to enjoy large and bright spaces, so were eliminated partitions of the living area to have a local as enjoyable as possible. The need to replace all systems with the least possible impact on the masonry has been resolved through the creation of a drowned floor systems in a dry slab of glass blocks. This will also allow the easy disassembly and reusability of some materials at the end of the life of the building.


    • Condensing gas boiler
    • Low temperature floor heating
    • Condensing gas boiler
    • No cooling system
    • Natural ventilation
    • No renewable energy systems

Construction and exploitation costs

  • 65

Urban environment

The building is located in an urban residential area, served by public transport, numerous shops, sports areas. It contains many single-family buildings or small characterized by the presence of small private green areas. The project wanted to maintain and expand the green areas present, they have also been made permeable exterior paved surfaces (in washed gravel), instead of the existing in stoneware tiles.

Land plot area

386,00 m2

Built-up area

90,00 %

Parking spaces

presence of private garage within the lot

Building Environmental Quality

  • Building flexibility
  • indoor air quality and health
  • biodiversity
  • works (including waste management)
  • consultation - cooperation
  • acoustics
  • comfort (visual, olfactive, thermal)
  • waste management (related to activity)
  • energy efficiency
  • products and materials

Building candidate in the category

Energy & Temperate Climates

Energy & Temperate Climates

Sustainable Renovation Grand Prize

Sustainable Renovation Grand Prize

Users' Choice Award

Users' Choice Award

 Green Building Solutions Awards 2016

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Author of the page

Nicola Preti

Architetto libero professionista

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 Green Building Solutions Awards 2016