What if every planning decision came with a preview button? In Adelaide, it does. With a digital plan powered by GIS, city planners and residents are reshaping urban growth with precision, not guesswork.<\/p>\r\n
Key Takeaways<\/strong><\/p>\r\n\r\n South Australia\u2019s cosmopolitan coastal capital and the fifth most populous city made a bold decision to grow rapidly but delicately. In its recently released comprehensive plan, Adelaide opted to double the population in its downtown core to 50,000 people by 2036\u2014adding housing density near its green spaces and historic neighborhoods.<\/p>\r\n To navigate competing demands\u2014growth versus green space, density versus character\u2014Adelaide needed a new approach to planning. Arup, a global engineering and design consultancy, worked with Adelaide\u2019s planners, tapping geographic information system (GIS) data and tools to create a digital plan of the city.<\/p>\r\n The city provided data for three critical dimensions of Adelaide: the physical infrastructure (roads, utilities, buildings), the environmental systems (parklands, waterways, vegetation), and the social fabric (demographics, income, vulnerability).<\/p>\r\n \u201cWe were given more than 400 datasets,\u201d said Lina Gonzalez, a GIS specialist at Arup. \u201cWe used the data to examine existing conditions and to help shape ideas about the future of the city.\u201d<\/p>\r\n By analyzing all this data in the context of location, the Arup team helped the city\u2019s planners visualize growth that focused on the people who live there and the things they value. They looked at mobility and accessibility, creating maps for each neighborhood to determine 15-minute walkability zones. They considered water resources to see where new trees might thrive in this drought-prone city. They monitored heat, humidity, and air quality collected by a network of 30 sensors that ring the city.<\/p>\r\n The digital plan tested growth scenarios, while also serving as a living document that could be queried to support planning decisions as the city grows. Ultimately, a map emerged that showed livability scores for each neighborhood and where to expand in areas with the most comfortable conditions.<\/p>"},{"acf_fc_layout":"gallery","gallery_images":[762882,762872,762912]},{"acf_fc_layout":"content","content":" Adelaide\u2019s accelerated development was spurred by Australia's federal government, which set an ambitious target of 1.2 million new homes across the country by 2029. This goal was particularly challenging for Adelaide, which faces unique constraints among Australian cities.<\/p>\r\n The city's crown jewel\u2014932 hectares of parks designed by Colonel Light<\/a> when the city was founded nearly two centuries ago\u2014winds through Adelaide in a figure-eight pattern. Serryn Eagleson, digital advisory lead at Arup, noted that the green spaces create an essential cooling infrastructure for the city. As extreme heat events intensify, these parklands lower ambient temperatures to soften the impact of heat waves and serve as critical infrastructure for stormwater management and air quality.<\/p>\r\n \u201cClimate resilience is a key part of their planning strategy,\u201d Eagleson said.<\/p>\r\n The digital plan and sensor data are being used to design \u201ccool routes\u201d to help residents navigate extreme heat events. The city also plans to integrate more sensors, so the digital plan gets updated with current conditions.<\/p>"},{"acf_fc_layout":"sidebar","layout":"standard","image_reference":null,"image_reference_figure":"","spotlight_image":null,"section_title":"","spotlight_name":"","position":"Right","content":" A Greener and Cooler City<\/strong>\u2014Leveraging Adelaide's parkland heritage while expanding tree canopy and green infrastructure to combat rising temperatures.<\/p>\r\n Transit Diversity<\/strong>\u2014Creating multiple transportation options that reduce car dependency and connect neighborhoods to employment, services, and recreation.<\/p>\r\n A City of Neighborhoods<\/strong>\u2014Ensuring each area maintains its distinct character while providing essential services within walking distance.<\/p>\r\n Housing Diversity for a Growing Population<\/strong>\u2014Accommodating growth through varied housing types that serve different income levels and life stages.<\/p>","snippet":""},{"acf_fc_layout":"content","content":" The use of the digital plan to examine possibilities for each neighborhood helped planners determine changes to enhance quality of life. The analysis identified where major transformations make sense, where the city\u2019s character should be preserved, and where subtle enhancements would be better than renewal.<\/p>\r\n The West Terrace neighborhood emerged as a prime candidate for reshaping. Modeling showed how a corridor of low-rise commercial buildings could be transformed with trees and taller mixed-use buildings. Many vacant parcels could be used for more housing, while protected cycling lanes could calm traffic.<\/p>\r\n King William Street, Adelaide's central boulevard, showed promise for the conversion of offices into residential buildings. An east-west path is planned to enhance connectivity for pedestrians and cyclists. The analysis showed that the area's existing public transport service could support denser living.<\/p>\r\n In contrast, the analysis showed that heritage neighborhoods like Wellington Square in North Adelaide should see little change. Rather than more density, the focus here would be on active transport links to the main artery of O'Connell Street and better access to the Adelaide Park Lands.<\/p>\r\n O'Connell Street represents a middle path. The Women's and Children's Hospital was recently torn down to make way for more housing, while the low-density historic character of surrounding residential streets will be maintained.<\/p>\r\n Even in lower-growth areas like the East End\u2014well-served by retail and green spaces\u2014the digital plan revealed opportunities for shop-top housing conversions and more cycling lanes.<\/p>"},{"acf_fc_layout":"gallery","gallery_images":[762992,762982,762972]},{"acf_fc_layout":"content","content":" With scenarios modeled and data analyzed, the next challenge was communicating these complex possibilities to residents and decision-makers.\u00a0Arup used ArcGIS Urban<\/a> to communicate slow and high-growth scenarios to stakeholders.<\/p>\r\n \u201cThis was provided to the community to convey what the city was moving towards,\u201d Gonzalez said. \u201cResidents could explore it to understand how planning decisions would affect their daily lives.\u201d<\/p>"},{"acf_fc_layout":"gallery","gallery_images":[763002,762942,762932,762952,762962]},{"acf_fc_layout":"content","content":" The interactive visualization enabled Adelaide residents to compare different possible futures. The slow-growth scenario focused on incremental development that prioritizes current character while meeting basic housing needs. The high-growth scenario embraced denser development to address housing affordability with larger population increases.<\/p>\r\n This visual approach made complex planning data clear and easy to follow for residents and decision-makers.<\/p>\r\n The city used the digital plan as a platform for community engagement. In March 2024, the team conducted mapping surveys to gather resident insights about current conditions. In April 2024, they convened local area focus groups that brought neighborhood voices into the planning process. Public consultations in June and July 2024 gave residents time to explore the scenarios in 3D. Interactive exhibitions in government buildings allowed anyone to explore what each growth scenario would mean for them.<\/p>\r\n\r\n Beyond visualization, the digital plan included sophisticated analysis tools that allowed stakeholders to test different priorities. \u201cThey could change the different weightings,\u201d Gonzalez said. \u201cThey can play around and make adjustments, such as prioritizing public transport or open spaces.\u201d This helped reveal the inherent tradeoffs and budget considerations.<\/p>\r\n This capability proved essential for understanding how community values would shape development outcomes. Residents could see in real time how prioritizing nightlife access versus quiet residential character would affect their neighborhoods' livability scores.<\/p>\r\n The Adelaide City Council officially approved the plan in September 2024. The appeal of a denser core downtown won out over a sprawling city that can be more isolating for people and more expensive to maintain.<\/p>\r\n Adelaide's approach shows how a digital plan can help guide hard decisions, amplify community voices, and create shared understanding of complex urban futures.<\/p>\r\n As the Lord Mayor of Adelaide, Dr. Jane Lomax-Smith wrote, \u201cCity Plan 2036<\/a> allows us to choose our own future. Everybody in South Australia needs a capital city that works well and delivers opportunities for all citizens. The onus is on us to leave a legacy.\u201d<\/p>\r\n \r\n\r\n \t
Enhancing Natural Areas That Temper Extreme Heat<\/strong><\/h3>\r\n
Core Goals of Adelaide\u2019s City Plan<\/strong><\/h3>\r\n
Designing Neighborhood-Specific Strategies<\/strong><\/h3>\r\n
Presenting Scenarios for Slow and Fast Growth<\/strong><\/h3>\r\n
Everyday Decision-Making Tools<\/strong><\/h3>\r\n