When disaster struck Los Angeles County in the form of devastating 2025 wildfires, a recently completed modernization effort proved its value in real time. This case study explores how the Assessor’s Office leveraged cloud-based infrastructure, data analytics and AI/ML tools to rapidly reassess more than 18,000 properties in just 90 days — a process that would have taken more than a year using legacy systems — delivering faster tax relief to thousands of impacted residents while preserving critical county revenue.
Beyond the immediate response, the paper highlights how a deliberate, phased modernization strategy — built on agile development, strong data governance and close collaboration between technical and business teams — positioned the agency to act with speed, accuracy and transparency in a moment of crisis.
