green building involves architecture that consists completely of organic materials.

Typical green building materials include wood, stone, recycled steel and timber, as well as natural colors and textures. Green building also employs energy-efficient systems, such as LED lighting, efficient plumbing and renewable energy sources, such as solar panels and wind turbines. Additionally, green building principles emphasize using natural ventilation instead of artificial cooling and heating systems.

Examples of green building materials include natural stone, wood, and clay. Organic insulation products, such as wool and straw, and recycled or salvaged building products can also be considered green building materials. Additionally, renewable or sustainably harvested materials, such as bamboo and cork, are increasingly popular choices in green building design. Green building also takes into account the use of energy-efficient lighting and space heating systems and other sustainable building practices, such as rainwater harvesting and grey water re-use.