“Backdoor Revolution: The Definitive Guide to ADU Development” by Kol Peterson

From CT.org 

Missing Middle Housing, a term invented by Dan Parolek [ https://islandpress.org/books/missing-middle-housing], has expanded the conversation about how people can live in settings that are not single family homes or apartment complexes. ADUs are a big part of the new mix of housing types as are cottages, duplexes, quadraplexes and small apartment buildings. Add the idea of Pocket Neighborhoods [[https://www.pocket-neighborhoods.net/] from Ross Chapin and a rich, diverse housing stock in intimate neighborhoods emerges as the potential future for Urban America.