The second floor deck leads into an inviting living room. Throughout the home, green features are employed to achieve near-Passivhaus energy standards. Triple glazed Kneer-Südfenster windows are strong insulators, and polished concrete floors absorb and retain solar energy.  Photo 5 of 9 in Ferrum House by Sarah Akkoush

Ferrum House

5 of 9

The second floor deck leads into an inviting living room. Throughout the home, green features are employed to achieve near-Passivhaus energy standards. Triple glazed Kneer-Südfenster windows are strong insulators, and polished concrete floors absorb and retain solar energy.