Happy #InternationalEarthDay ! We hope you like our recently submitted to planning Net Zero project, Hidden House. Sustainability is its core design ethos with natural insulation, heat banks, and a courtyard which acts as a solar collector in winter and ventilation in summer! https://t.co/KgvRa48GVmHappy #InternationalEarthDay ! We hope you like our recently submitted to planning Net Zero project, Hidden House. Sustainability is its core design ethos with natural insulation, heat banks, and a courtyard which acts as a solar collector in winter and 6369584 Happy #InternationalEarthDay !