- Alastair Binnie
 - Specialises in energy efficient buildings and sustainable development. - Arkiteco
- Specialises in ecologically sustainable houses.
- Cob Cottage Company
- Researches sustainable building around the world, adapts traditional knowledge to local conditions, and trains people in its applications.
- Environmental Design Consortium (EDC)
- Providing residential and commercial architectural services with a specialization in green, sustainable or ecological building methods and materials.
- GroundSwell Architects
- Sustainable architecture and community design.
- LiQWood Design
- Sustainable design and consulting services for commercial, residential and public architectural projects.
- Locus Architecture
- Full service firm with an emphasis on sustainable technologies and resource efficient construction.
- Morgan, Chris AIA
- Specializing in ecologically sustainable design.
- Oesch Environmental Designs
- Specializing in ecologically sustainable design including solar and living earth roof systems.
- REA architects
- Concentrates on sustainable design for residential and commercial builders.
- Siegel & Strain Architects
- Specializing in ecologically sustainable design, historic projects, and housing.
- Skillful Means
- Architects and builders with experience in sustainable buildings, including straw-bale and rammed earth construction.
- Solar Design Associates
- Architects and engineers dedicated to the design of sustainable buildings and the engineering and integration of renewable energy systems which incorporate the latest in innovative technology.
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