Session · Retrofits and EnerPHit · Designers and consultants

The Marnix: From Passive House to Regenerative Architecture – Retrofitting a 1965 Modernist Landmark

Sebastian Moreno-Vacca, A2M · July 28, 2026 · Chapter · PHMN (Passive House Minnesota)

The Marnix, the 1965 ING headquarters by SOM, given 50 more years by deep retrofit and adaptive reuse: primary energy down 85% and CO2 emissions 75%, at 20% less than a conventional renovation, per the source.

Key points

• The transition from Passive House buildings to regenerative architecture.
• Designing with climate, nature, and people in integrated design.
• Iterative, data-driven design with Passive House principles and simulation.
• How deep retrofit cuts carbon, builds resilience, and improves wellbeing.

Topics: Retrofit