Nora Griefahn sips tea from a cup made of compostable materials in her Berlin office, where the walls breathe with living plants and the lampshades were grown from mushroom roots. This is the C2C LAB — a 5,000-square-foot former pharmacy turned living showcase of circular design. Here, nothing is meant to end up in a landfill. Instead, every material is either composted back into the earth or reused, proving that buildings can be more than just shelters — they can be regenerative systems.
Most sustainability efforts focus on doing less harm. The C2C LAB flips that idea: it’s designed to do good. Co-founded by Griefahn and her partner Tim Janßen in 2012, the Cradle to Cradle NGO uses this space as a headquarters, classroom, and real-world test site. Their mission? To show that even old, toxic buildings can be transformed using Cradle to Cradle principles — where materials are part of endless biological or technical cycles.
In this office, the carpet can be taken apart so its fibers and backing are recycled into new carpets. The office chair combines reusable metal with cushions that will one day feed the soil. Even the beer on tap is brewed from leftover bread. These aren’t futuristic ideas — they’re in use today. The C2C database already lists thousands of certified products, like the Shift Phone, built for easy repair and recycling, and modular timber buildings like the Loop Supermarket near Munich, which cost less to build than conventional ones.
The vision stretches far beyond Berlin. Griefahn’s father, chemist Michael Braungart, co-created the Cradle to Cradle concept with architect William McDonough. Together, they’ve designed everything from edible seat covers to compostable sneakers, and buildings like Method’s Chicago factory — home to the world’s largest rooftop greenhouse, spanning 75,000 square feet. Their philosophy is simple: don’t just reduce damage. Create systems that give back.
The impact is measurable. Tarkett, the company behind Desso carpets, saves millions by reclaiming and recycling old carpet tiles — because they’re non-toxic, they no longer count as hazardous waste. The green roof at the Loop Supermarket doesn’t just insulate — it boosts local biodiversity. And the C2C LAB itself stands as proof that circular design isn’t a dream. It’s doable, now.
This isn’t about recycling more. It’s about designing waste out of the system entirely. As Griefahn puts it: buildings should work like forests — producing energy, cleaning air, and enriching life. The future isn’t less harm. It’s net good.