Berlin's Radical New Eco-Building Uses Hemp, Solar, and Recycled Airport Parts

A new residential building in Berlin-Weißensee is pushing the boundaries of sustainable urban construction. Made almost entirely from natural, recyclable materials, the project aims to prove that eco-friendly housing can still offer high living standards. Work began in 2024, with completion set for mid-2026.

The building's design relies on hemp-lime for exterior walls, cutting around 16 tons of CO₂ compared to traditional aerated concrete. Inside, hemp-clay walls help regulate humidity and temperature, creating a healthier indoor environment. Even small details reflect sustainability—old fire hoses have been repurposed as kitchen drawer pulls, while stair treads come from Berlin's decommissioned Tegel Airport.

Renewable energy plays a key role in the project. Two geothermal boreholes provide heating and cooling, while 39 solar panels generate electricity. A rainwater harvesting system supplies water for toilets and laundry, further reducing resource use. This experimental project builds on a growing trend in German cities. Over the past five years, around 15–20 similar buildings have been constructed in Berlin, Munich, and Hamburg. Notable examples include the Hanf-Kalk-Haus in Berlin-Kreuzberg (2023) and a hemp-clay apartment block in Munich (2024). Leading firms like Arch+Architekten, Schedoni Architekten, and Exn Architecture have driven this shift toward circular, low-carbon construction.

The Weißensee project could set a new standard for urban housing, showing how natural materials and modern technology can work together. If successful, it may encourage more developers to adopt resource-efficient methods in densely built cities. The building's completion in 2026 will mark a significant step in Berlin's push for sustainable architecture.