Although testing confirmed the home is as well-sealed as a certified Passive House, it's designed to be filled with light, including a frosted-glass front door and a stairway teeming with windows.  Photo 4 of 9 in Budget Breakdown: An Architect Couple Build a Net-Zero Home and Studio for $250 Per Square Foot

Budget Breakdown: An Architect Couple Build a Net-Zero Home and Studio for $250 Per Square Foot4/9

Although testing confirmed the home is as well-sealed as a certified Passive House, it's designed to be filled with light, including a frosted-glass front door and a stairway teeming with windows.

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