Arup has provided a future-proof design for Cloud Valley, a new 17km² business park in Hangzou, China. Our concept, which won first prize in the Cloud Valley urban design competition, is of a nature-based urban development aligned with China’s national policies for ‘model towns’. The project also acts as impetus for digital innovation – drones were used to acquire site-specific data to inform the planning process and allow various stakeholders to ‘see’ how the site will be transformed upon the implementation of the scheme.
Project Summary
1 st Prize in international competition
1st Cloud computing cluster of Alibaba Group


Ecological sensitivity analysis
Central to our approach was providing an intuitive understanding of the site’s complex ecology. Using custom-designed parametric tools, we carried out site-wide ecological sensitivity analysis, superimposing multiple analysis layers to extrapolate aggregate sensitivity. We used the results to develop a masterplan strategy that takes into consideration the varying ecological sensitivity of the site.
“The master plan retains the important function of the area as a flood plain. It also envisages the gradual transformation of the existing agricultural practices to complement the changing demand of the future population. Demonstrates a genuine sustainability approach in social, economic and environmental development.
The plan is implementable and practicable. ” Judges HKIP awards 2017


Reducing flood risk
Based on our flood risk analysis, about 65% of the site lies within a 20-year flood-risk plain. To reduce flood risks, construction and development in these areas will follow the ‘sponge city’ concept. This approach maximises the effectiveness of low-impact development, ensuring regional flood protection and ecological security, as well as enabling the site to adapt to changing environmental conditions and respond to natural disasters in a flexible manner.
Driving innovation in the region
Cloud Valley is expected to be a magnet for creative talent and companies from across the world. It will showcase ‘best practice’ for pioneering business hubs by offering flexible and co-working environments, smart technology and a sharing economy focused on travelling, living, business and retail services.