greeenNXT GmbH is a planning office that develops modular systems for the energy-efficient renovation of existing buildings. With roots in sustainable construction and the timber construction expertise of greeen! architects GmbH, its focus is on CO₂ reduction through serial renovation, ecological materials, and prefabricated components. Thanks to an efficient, cost-effective, and sustainable approach, greeenNXT contributes to reducing the renovation backlog and advancing the energy transition in Germany.