New Tools to Measure Urban Growth
A new ISPRS research paper details a method for monitoring vertical urban growth to assess land-use efficiency. The technique, which calculates built-up volume trajectories, provides urban planners with a more precise tool for tracking densification in line with UN Sustainable Development Goals.
The United Nations' Sustainable Development Goal 11 (SDG 11) aims to make cities inclusive, safe, resilient, and sustainable. With the global urban population projected to reach 5 billion by 2030, tracking urban land expansion is critical for planners to ensure that city growth is both economically productive and environmentally sound. Historically, measuring densification has been challenging due to a lack of reliable data on vertical growth and building use changes. New volumetric analysis tools allow planners to move beyond outdated 2D maps and model entire city districts in dynamic 3D. This technology enables the simulation of various development scenarios, tracking how neighborhoods densify over time and analyzing the potential impacts of zoning changes on factors like urban heat islands and airflow between buildings before any construction begins. Top-tier architecture firms are already implementing these advanced techniques. For instance, SOM's Parkmerced Vision Plan in San Francisco is transforming a car-centric neighborhood into a pedestrian-focused community by using evolving environmental technologies to reduce energy and water consumption. Similarly, Gensler's urban design projects often focus on creating socially, economically, and environmentally viable networks of streets and plazas. A strong portfolio for leading firms should demonstrate proficiency in in-demand software such as Revit for Building Information Modeling (BIM), along with parametric design tools like Rhino and Grasshopper. Familiarity with GIS platforms and sustainability analysis tools is also crucial for roles in urban design and planning. Large-scale urban projects increasingly incorporate sustainable design trends. Biophilic design, which integrates natural elements into buildings, has been shown to improve well-being and productivity. Additionally, certifications like LEED (Leadership in Energy and Environmental Design) and the push for Net-Zero buildings, which produce as much energy as they consume annually, are becoming industry standards. The LEED Zero program further recognizes buildings that achieve net-zero carbon emissions over a year.
