We visited two wildly different green building projects yesterday and discovered they have a lot in common: heat recovery ventilation, high R-value insulation, high quality windows, open plan living and fresh white paint.

10:30 a.m., Hudson: Dedication of the Columbia Passive Townhouses built by the volunteers of Columbia County Habitat for Humanity. Read more >

1:00 p.m., Copake: Tour of New York’s first Breezehouse, an eco-friendly house built on a steel frame in Blu Home’s California factory. Read more >