Anthropogenic climate change, growing populations, the decrease of essential resources, and the availability of funding to deal with these issues provide incentives for urban sustainability programs. Urban areas are working to both mitigate and adapt to these emerging conditions. Such programs include Santa Monica's Sustainable City Plan (SCP), the Sustainable Seattle Project, and Vancouver, Canada's Vital Signs. Though WebGIS applications visualizing features of sustainability do exist, few visualize actual sustainability indicators, and almost none visualize performance on the refined scale of the city. A demonstration WebGIS application targeting such objectives with urban sustainability indicators was developed for Oakland, California. The WebGIS provides a tool for planners and the public by creating a starting point for a time-referenced spatial view for the pace of progress. The six broad indicator elements determined by the city of Oakland's Annual Sustainability Report worked as the foundation to a customization for spatially related indicators to meet specifications of quality in representation and function. These customized indicators are climate change vulnerability, employment availability, public transit accessibility, natural resource project inventory, as well as culture and community.