Long Bay is an intricately layered urban plan designed for an extraordinary coastal site whose rich cultural heritage and at-risk environmental status call for the utmost in innovation and sustainability. Based on an ongoing dialogue with the local Maori people and extensive site analysis, The Long Bay plan takes a holistic design approach with a series of cutting-edge water treatment programs and other responsive solutions that will allow a growing population to best enjoy the region’s cultural and environmental resources. The planning approach to Long Bay is a marked departure from the typical, inward-focused development north of Auckland. With its prominent coastal position overlooking the pristine Waitemata harbor, the Long Bay site incorporates views of many important regional landmarks, including Auckland’s iconic Rangitoto volcanic cone. Access to these views was a critical component of the planning process and is highlighted throughout the design.Long Bay’s rich cultural heritage plays an important role in the understanding of the site. Discovered and inhabited by Maori people in the 1400s, Long Bay was known as “Oneroa” or ‘Long Expanse of Sand’. A unique relationship was formed between the design team and local Iwi (Maori) tribes. In New Zealand, the Maori are caretakers of the land and water, so it was important for the design to acknowledge and respect the Iwi culture and history. Within the coastal edge park a Recreation and Heritage Protection Zone was established to preserve a representative cross-section of the cultural history of the Long Bay area including Maori archeological sites, early European farming areas, and World War II defensive works. The cornerstone of the ecological restoration effort is the creation of a series of substantial wetlands within the stream corridors to improve the number, size and quality of aquatic habitats. The plan proposes to replant the Lower Valley stream corridors with large drifts of native wetland plants sourced from native seed stock from Long Bay and to integrate storm water treatment wetlands within the riparian corridor. These wetlands are part of the larger storm water management system and will provide both storm water quality treatment and volume control. A comprehensive plan for storm water treatment is a key element of the Long Bay design. The plan takes treatment levels to new heights and scale by building on the international success of rain garden test cases in Oregon. This project incorporates initial storm water treatments through rain gardens within all the roads on site. The Long Bay Plan offers an extensive and diverse public open space that creates access to a big backyard - the Regional Park, beach, coastal walks, and stunning views. The proposed concept offers 45 hectares of open parkland, equivalent to 90 full-sized rugby fields.