Conserve energy and resources, design for efficiency and promote renewable energy.

Specify products that are more durable, adaptable and repairable and design for reuse and recycling.

Use sustainable, renewable and/or recycled materials and processes that are of low impact and are low polluting.

Use local materials and processes where possible.

Use materials and processes that are healthy, least toxic, non-allergenic and safe in use.

Design whenever possible for natural daylight, natural air quality and climatic control and rely less on artificial systems.

Protect against harmful radiation and electromagnetic fields.

Use materials, processes and designs that are socially and ethically responsible.

Endeavour to design products, spaces and systems that are life enhancing and work with nature and natural forces.