Super energy-efficient homes on display

Super energy-efficient passive houses will open their doors to visitors in the Portland area this weekend, in conjunction with International Passive House Days.

There will be four homes in Portland available for touring, along with passive houses in West Linn, Dundee and Woodburn.

Tours occur Friday through Sunday, Nov. 9 to 11.

For more information:

html>www.phnw.org/63/114/international-passive-house-days-9-11-november-2012.html