An existing 1970s house was renovated to Passive House standards of construction, though the north-facing views and sheets of glass prevented it from meeting true Passive House energy calculations. The architects, Ryall Porter Sheridan, estimate that its "the second most energy-efficient structure on Long Island." Photo by: Ty Cole. Photo 7 of 19 in 15+ Passive Modern Home Ideas by Heather Corcoran from Passive Houses Across America

15+ Passive Modern Home Ideas

7 of 19

An existing 1970s house was renovated to Passive House standards of construction, though the north-facing views and sheets of glass prevented it from meeting true Passive House energy calculations. The architects, Ryall Porter Sheridan, estimate that its "the second most energy-efficient structure on Long Island." Photo by: Ty Cole.