Photos: A modular house-raising

A window is guided into place by carpenters assembling a component house by Green Building Technologies in Highland Park. (Chris Walker/Chicago Tribune photo)

Chicago Tribune

March 9, 2014 10:56 AM PT

Collectively called factory-built homes, they are built partially or completely in factories, then delivered to home sites by truck. We watched one come together in hours.

A framed window section is lowered into place as carpenters reach to steady it in the wind. (Chris Walkerr/Chicago Tribune photo)

Driver Dan Oliver carries a framed section to the second floor. (Chris Walker/Chicago Tribune photo)

Neil Fortunato, president of Green Building Technologies, steps through a window opening as carpenters guide in a component of the home. (Chris Walker/Chicago Tribune photo)

An exterior view later that day shows the crew’s progress after only a few hours of assembling the component house. (Chris Walker/Chicago Tribune photo)