The Elder Cohousing Network in Davis, Calif., an eight-household community, opened in January 2006 as the first elder cohousing development in the country. Members range in age from 76 to 92; the community grew out of a Unitarian Universalist congregation in Davis.

Karen Hester co-founded Temescal Creek Cohousing in North Oakland, Calif. The project had roots in a local United Methodist congregation. She has over 20 years of experience with group projects, grassroots organizations and communities.

Mustard Seed Associates in Seattle is a network for Christians interested in cultural innovation. It is a resource for information about cohousing.

Wonderland Hill Development Co. in Boulder, Colo., has developed 20 communities and is working on several more. The core values of the organization are based on “personal values, community, organic design, and sustainable building practices and principles.” James W. Leach is president; Terri Furman is director of sales and marketing.

Silver Sage Village in Boulder, Colo., broke ground in August 2006 and is Colorado’s first cohousing development for seniors. With a spiritual core, the ecofriendly community has a common meditation room.

Sand River Cohousing is a 26-family community of elders developed in Santa Fe, N.M., based on shared values, including spiritual growth. Contact Coreen Plewa.

The Oakcreek Cohousing Community was completed in 2012 and is run and staffed by the community members themselves. It houses seniors in its 24 units and works to create an interdependent, supportive community. It is located in Stillwater, Oklahoma.

The Skeptics Society is a scientific and educational organization that investigates fringe science and paranormal claims and strives to promote critical thinking. Michael Shermer is executive director, and he also serves as publisher of the group’s magazine, Skeptic.

Arboretum Cohousing is a 40-unit development in Madison, Wis. It includes affordable housing through Habitat for Humanity of Dane County.