•Building and social housing foundation
http://www.bshf.org

•Co-housing: a model for sustainable living
http://www.smartcommunities.ncat.org/articles/cohouse.shtml

•Co-housing association in united states
http://www.cohousing.org

•Earthsong, ecobarrio en Nueva Zelanda
http://www.earthsong.org.nz

•Ekostaden-Malmö
http://www.ekostaden.com/

•European Academy of the urban environment
http://www.eaue.de

•European Green Cities Network
http://www.europeangreencities.com

•Findhorn-ecovillage
http://www.findhorn.org

•Sustainable housing in Europe
http://www.she.coop

•Sustainable communities network
http://www.sustainable.org

•The eco housing corporation
http://www.ecohousing.net