Los Angeles to replace 1,600 acres of pavement with green spaces by 2045

Los Angeles County has set an ambitious goal to remove 1,600 acres of pavement by 2045. The plan replaces concrete with green spaces to tackle rising heat, flooding, and health problems in under-shaded neighbourhoods. This shift marks a growing trend among cities rethinking urban infrastructure.

The move follows over a century of heavy paving in American cities, originally intended to control floods and weeds. Now, officials see depaving as a way to adapt to extreme weather and ageing systems while restoring lost natural benefits.

The county's strategy begins with small-scale assessments in areas lacking tree cover. These neighbourhoods often suffer the most from heat and poor air quality. By creating more room for soil, trees, and plants, the project aims to cool streets and reduce flash flooding.

Los Angeles is not alone in this effort. By early 2026, at least 12 US cities had included depaving targets in their sustainability plans. Seattle has removed 500 acres of pavement annually since 2022, while Portland aims to cut impervious surfaces by 20% by 2040. Los Angeles itself has a broader goal: eliminating 10,000 acres of asphalt by 2035.

One major hurdle will be maintaining the new green spaces over time. Policymakers must ensure vegetation thrives long after the concrete is gone. While natural infrastructure costs more upfront, it offers long-term savings by reducing heat-related illnesses, flood damage, and maintenance expenses.

The push for depaving also reflects a broader rethink of urban design. For decades, cities like Los Angeles prioritised concrete solutions—such as the 1938 encasement of the Los Angeles River, which destroyed wetlands and habitats. Today, planners increasingly view streets and public spaces as a blend of built and living systems.

The county's 1,600-acre target is part of a wider shift toward climate-resilient cities. If successful, the project will lower temperatures, improve water absorption, and create healthier neighbourhoods. The challenge now lies in execution—ensuring the green replacements endure and deliver lasting benefits.