Sustainable architecture

Sustainable architecture seeks to minimize the negative environmental impact of buildings by enhancing efficiency and moderation in the use of materials, energy, and development space.

Generally sustainable architecture reduces global CO2 emissions, energy consumption, and material waste. Green buildings, also known as high performance buildings, are intended to be environmentally responsible, economically profitable, and healthy places to live and work.


Value for developer, investor, and owner


  • positive contribution to global climate
  • reduce greenhouse gas emission & resource efficiency
  • higher building quality and lower maintenance costs
  • less electricity / water use and lower utility bills
  • optimize the investment / increase property value
  • prestige and high quality
  • good indoor environment quality and non-toxic material
  • healthy living environment



ecotool_cube-300x219regroup is using for all project developments the adaptable ecotool.asia system.
ecotool is not a label, it’s a flexible toolbox and survey tool for the building design process. The focus is on concepts and actions with a high leverage and large effect on the targeted goals. An economy of means as a basis of design process is as important as the maximization of energy efficiency of the building.

  • Simple, passive, stable, good-natured systems (more passive, less active systems to control the internal climate)
  • Consideration of the economic and technological level in south east asia
  • Economically viable measures
  • Prevent adverse and promotion of desired effects
  • Respect the physical principles

ecotool system is based on three aspects:



Context – Passive Energy Performance

Preserving and adequate handling as well as usage of existing resources.


Usage – Active Energy Performance

Reduction and optimization of required building energy.


Building – Static Building Performance

smart concepts and appropriate constructions,
“form follows climate and function”

The three main aspects of ecotool are divided into several sub points with individual approaches.


  • Wind fostering and use of cross ventilation and buoyancy ventilation
  • Sun reducing the heat gain
  • Water minimize water use and groundwater preservation, and improve of water quality
  • Landscape greened, natural surroundings
  • Energy Generating use of renewables energy
  • Cooling/ Dehumidification / Ventilation energy efficient systems and healthy living climate
  • Light natural light and optimized use of artificial light
  • Monitoring & Regulation monitor and control energy consumption
  • Overall Design efficient concept and disposition
  • Structure sustainable, adequate to climate and functions
  • Envelope separation between interior and exterior climate
  • Construction/ Materials quality & sustainable materials


>>> more information about ecotool

Definition sustainability

Sustainability means a balance between social, economical, and ecological issues and this balance has to be found out individually for each project and location.


economic Performance

  • long-term economic model: construction, operational, energy
  • maintenance, and replacement costs
  • longevity of materials

social Performance

  • long-term development, possibilities future transformations
  • high level of architectural quality
  • consideration of the physical, cultural, and social context

ecological Performance

  • reduces global CO2 emissions, reduced ecological footprint
  • energy efficiency, reduced energy consumption
  • use of renewable resources (active and passive)
  • grey energy minimization, use of recycled content materials