Although it does not allude to hermits as such (it mentions Thoreau’s 150 square foot house and George Bernard Shaw’s little writing cottage), this Web site will be of interest to anyone who wants to build or identify a small house in various materials. There is a resources page and a news page.
The Web site is: http://www.resourcesforlife.com/groups/smallhousesociety/
Hermits around the web – Hermitary
news, sites, and pages of interest about hermits and solitude