Last modified by the author on 11/07/2016 - 19:08
  • Building Type : Isolated or semi-detached house
  • Construction Year : 2014
  • Delivery year : 2015
  • Address 1 - street : 720032 SUCEAVA, Romania
  • Climate zone : [Dfb] Humid Continental Mild Summer, Wet All Year

  • Net Floor Area : 190 m2
  • Construction/refurbishment cost : 400 000 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 2105.26 €/m2

Proposed by :

Certifications :

  • Primary energy need
    89 kWhpe/m2.year
    (Calculation method : Other )
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 challenge was to create a simple,sustainable, two-storey unit that would fit into a special site: a matureforest inside  a northern Romanian city.

House Che subtly rises aroundthe inner courtyard in a mesmerizing natural environment with whom the buildingcommunicates through wide openings and various inner-out passages.

The house was designed andbuilt to reach the passive house standard in the harsh climate conditions ofnorthern Romania (Suceava) and is in the passive evaluation process. Theestimated energy demanded for heating and hot water is lower than 14kwh/sqm/year (according to preliminary phpp calculations).

The natural day factor is fourtimes bigger than the usual amount while the generous glazed surfaces alsoincrease the solar passive energy gain. The iconic shape of the roof maximizesthe solar input used for heating, offering in the meanwhile a contemporarydynamic expression.

To match the surroundings,exterior finishing is made out of natural cedar slats that preserve theirphysical-chemical properties even in the northern climate. The green roofrecovers the vegetal surface displaced for the house construction.

The minimal need for heatingis covered by a ground/water power heat pump. Photovoltaic panels will beinstalled on the roof at a later stage in order to provide the electric energynecessary for vital consumption and domestic hot water is obtained throughsolar thermal collectors and a heat buffer tank.

See more details about this project


Contracting method

Other methods

Energy consumption

  • 89,00 kWhpe/m2.year
  • 111,00 kWhpe/m2.year
  • Other

Envelope performance

  • 0,11 W.m-2.K-1
  • Exterior insulation to ambient air - 0.11W/(m²K)
    Exterior insulation underground - 0.12W/(m²K)
    Windows - 0.63W/(m²K)
    External doors - 0.10W/(m²K)

  • 0,32
  • n50

  • 0,40


    • Condensing gas boiler
    • Low temperature floor heating
    • Condensing gas boiler
    • No cooling system
    • Natural ventilation
    • Double flow heat exchanger
    • Heat pump

Urban environment

    The construction fits into a special site: a mature forest inside a northern romanian city. The building keeps all the existing trees on site and also recovers the existing lawn in the shape of the green roof.

  • 1 285,00 m2
  • 15,00 %
  • 1 000,00


    Proclima Membranes


    [email protected]

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    High per­form­ance va­pour re­tard­ing and air­proof­ing sys­tem for max­im­um pro­tec­tion from struc­tur­al dam­age and mould. Highly per­meable, roof lin­ing and sark­ing mem­branes that act­ively man­age mois­ture, 3-4 ply, suit­able for tem­por­ary cov­ers.

    Both designers and workers.

Reasons for participating in the competition(s)

​The main principles and goals of sustainability and energy efficiency are pursued by the use of wooden structures, all natural insulation materials, green roof, high performance windows and the encompassment of a resource management system for heating and electricity supply.

Building candidate in the category

Energy & Temperate Climates

Energy & Temperate Climates

Users' Choice Award

Users' Choice Award

Green Building Solutions Awards 2016

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Author of the page

Sergiu Petrea

Managing Partner, Architect

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Green Building Solutions Awards 2016