Manufactured and modular housing are increasingly being utilized by affordable housing developers in both urban and rural areas. Recent improvements in quality, flexibility and design make manufactured/modular housing a competitive alternative to "stick-built" construction for new development as well as infill or replacement construction. Some manufacturers will work with your home design to convert it to modular construction methods.
Innovations in Manufactured Housing (I'M HOME) Organization, literature & funding source
"Moving Home: Manufactured Housing in Rural America"
Has excellent bibliography; available on the Housing Assistance Council website
Examples of affordable housing using modular construction:
OPAL Community Land Trust
San Juan Community Home Trust
Seattle’s Noji Gardens
Manufactured Housing Institute
California Manufactured Housing Institute
U.S. Department of Housing and Urban Development
Nehemiah Corporation of America