Which sustainable building certification system was specifically developed to address the unique challenges of existing buildings rather than new construction?

In recent years, sustainability has become a central focus in architectural design and construction. As environmental concerns grow, architects are pioneering innovative solutions to reduce carbon footprints while maintaining aesthetic appeal and functionality. This poll tests your knowledge about emerging sustainable practices that are reshaping the architectural landscape. How familiar are you with the cutting-edge sustainability initiatives transforming modern building design?

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LEED O+M (Leadership in Energy and Environmental Design for Operations and Maintenance)
WELL Building Standard
Passive House (Passivhaus) Standard
Living Building Challenge