Eco-friendly building, natural materials, recycled wood, low-carbon concrete, sustainable steel frames, energy-efficient glass windows, solar panels, green roofs, living walls, rainwater harvesting systems, grey water reuse, composting toilets, organic waste management, minimal waste generation, cradle-to-cradle design, biodegradable materials, non-toxic paints, FSC-certified timber, locally sourced components, minimized transportation emissions, reduced material consumption, optimized structural efficiency, passive house design, net-zero energy building.