How They Pulled It Off: A Record-Breaking Passive House Behind a Refreshed Bungalow
The 5,000-square foot duplex on a compact, sloping lot shows how energy efficiency and architectural heritage can coexist.
The largest certified Passive House project in the South isn’t where you’d expect. In Austin’s Castle Hill Historic District—a charming, walkable neighborhood of late 19th-century homes just steps from bars, restaurants, and downtown—an unassuming lot conceals a newly built 5,000-square-foot duplex and a freshly revived 100-year-old bungalow.
