The AIA Housing and Community Development Knowledge Community (HCD) is a network of architects and allied stakeholders that promotes equity in housing, excellence in residential design, and sustainable, vibrant communities for all, through education, research, awards, and advocacy.
Eastern Village (Silver Springs, MD) – LEED Silver project completed by EDG Architects around 2004 or 2005. http://www.easternvillage.org/
EcoVillage at Ithaca. 3 communities in total (100 families combined)– built over time. Very sustainable, not just buildings, but permaculture farming is a big component. https://ecovillageithaca.org/live/neighborhoods/
Sand River Cohousing (formerly ElderGrace) – LEED Silver completed 2009.
Capitol Hill Urban Cohousing – 9 units on 4500sf lot. Very urban/dense. No parking, rooftop farm. Rental model for economic sustainability. Used Living Building and Passive House standards. Completed in 2016.