Planning rainwater use at the school centre of the Municipality of Holzwickede

Summary

The tender concerns planning services for rainwater use at the school centre of the Municipality of Holzwickede. The contractor must develop and coordinate a climate-resilient rainwater management concept, including site surveys, feasibility and detailed design, approval documents, tender documentation, construction supervision and final reporting. The concept may include surface unsealing, infiltration systems, tree infiltration systems, cisterns, green roofs and green facades. The project aims to disconnect approximately 25% of sealed surfaces from the combined sewer system, increase the evaporation rate by 10 percentage points, reduce flood and heat risks, and support the restoration and separation of natural watercourses. The planned services cover HOAI planning phases 1–9 and coordination with the municipality, schools, authorities and other stakeholders. The tender deadline is 14 October 2026. Offers are evaluated on price and qualitative criteria, including technical quality, project approach, presentation, schedule, commitment, understanding of the concept and two comparable completed projects.