The company claims that with its factory-built "cores" of kitchens and other rooms, builders can construct homes in half the time. The approach, it says, results in better quality and costs less than with traditionally built houses.
Sonoma County builders pulled just 132 permits for single-family homes in the first seven months of the year, compared to 219 for the same period in 2009, according the Construction Industry Research Board in Burbank.
The two new homes will be the 13th and 14th the nonprofit group has built in Sonoma County.
Online readers can view a map of the six subdivisions that together have more than 300 empty home sites.
County builders took out just 34 permits for new single-family homes in the first three months of the year, down from last year, which ended up as the worst in more than four decades.
Home construction in Sonoma, Lake and Mendocino counties falls to the lowest levels in four decades.