Four Cities Show Zoning Alone Won’t Cut Emissions

Four North American cities reveal contrasting outcomes in infill housing and emissions reforms.

Calgary, Edmonton, Minneapolis, and Vancouver each pursued zoning changes with varying integration into climate and transport plans, demonstrating that effective urban reform requires more than legalizing density alone. Their experiences highlight the importance of embedding zoning in broader policy frameworks to withstand political challenges.

Calgary initiated a broad infill rezoning reform in 2024 but reversed it by August 2026 amid political backlash. Edmonton approved a comprehensive zoning bylaw renewal in late 2023, effective January 2024, enabling more small-scale residential development and projecting a 6% per capita reduction in greenhouse gas emissions. Minneapolis legalized up to three units on former single-family lots in 2019, within a climate and transportation plan aiming to reduce automobile passenger miles by 38%. Vancouver permits multiplex housing with up to eight units per lot and mandates zero-emissions equipment for new low-rise buildings since 2022, targeting all new homes to be zero emissions by 2030.

Calgary’s rollback takes effect August 4, 2026, while Vancouver’s zero-emissions goal extends to 2030.

Montana communities could find lessons in these varied approaches, especially regarding the interplay of zoning, transit, and building codes in reducing emissions. Given Montana’s dispersed settlements and transportation patterns, adopting integrated urban reforms might face similar political and practical challenges seen in these cities.

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

By Michael Barnard, CleanTechnica