A Tale of Four Cities on Infill, Emissions, & Political Nerve

Four North American cities—Calgary, Edmonton, Minneapolis, and Vancouver—are each tackling the challenge of accommodating population growth within existing neighbourhoods while aiming to reduce infrastructure costs, transport emissions, and building energy use. Their varied approaches offer valuable insights into urban infill policies and the political dynamics surrounding them. Calgary initially embraced a bold citywide rezoning to allow more diverse housing types, such as duplexes and townhouses, in traditionally low-density areas but later reversed this reform following political backlash, highlighting the tension between progressive urban planning and local opposition. Calgary’s 2024 Rezoning for Housing had begun to make tangible progress by enabling a significant portion of new low-density housing permits in established areas, including hundreds of new units and secondary suites. However, the reform was criticised for being too sweeping and insufficiently integrated with transit-oriented development or broader planning frameworks, making it vulnerable to political shifts. The city’s rollback underscores a recurring pattern in Alberta politics where economic and environmental rationales for densification are often outweighed by vocal resistance from entrenched interests and NIMBY sentiments. By contrast, Edmonton adopted a more measured but comprehensive approach with its 2023 Zoning Bylaw Renewal, which permits a variety of small-scale residential developments up to three storeys and up to eight dwellings per lot. This framework was explicitly linked to the city’s climate goals, with modelling showing that compact growth could reduce per capita greenhouse gas emissions by 6%. Edmonton’s strategy demonstrates the importance of coupling zoning reforms with clear environmental objectives and embedding them within a broader urban plan, thereby strengthening political and public support. Minneapolis and Vancouver further illustrate different strategies on this spectrum. Minneapolis implemented narrower reforms within a wider planning context, while Vancouver integrated infill policies into a holistic urban decarbonisation agenda. These examples reinforce the evidence that densification alone is insufficient; its benefits are maximised when combined with transit accessibility, walkability, and energy-efficient building forms. The experiences of these cities suggest that successful infill policies require not only sound technical design but also careful political navigation and community engagement to withstand opposition and deliver long-term sustainability gains.