The Ontario government recently decided to eliminate Toronto’s green roof bylaw. This move, part of the Bill 60 Fighting Delays, Building Faster Act, 2025, aims to reduce bureaucracy for developers. However, it has stirred criticism from environmentalists and city officials who worry about its impact on climate efforts.
Toronto was a pioneer in green roofing, introducing its bylaw in 2009. This regulation required new buildings over 2,000 square meters to include green roofs. Since then, over 1,200 such roofs have been installed, benefiting the city by managing stormwater and reducing energy costs.
Mayor Olivia Chow voiced her disappointment, noting the bylaw’s role in lowering greenhouse gas emissions and enhancing urban living. Braman Thillainathan, her press secretary, highlighted that green roofs help make life more affordable and pleasant for residents.
Mary-Margaret McMahon, an Ontario Liberal MPP and former city councillor, has been a strong advocate for green roofs. She criticized the government’s decision for lacking public consultation and emphasized the need for green roofs in urban areas. McMahon pointed out that removing the bylaw could shift stormwater management costs onto taxpayers, particularly as Toronto faces the risk of more intense rainfall due to climate change.
Data shows that the Ontario green roof labor market employs about 1,600 people, covering a range of roles from manufacturers to consultants. McMahon argues that the claim that green roofs hinder housing development is misleading; they only represent a tiny fraction of overall building costs and should not stifle construction.
According to the National Research Council of Canada, green roofs can reduce stormwater runoff by up to 70%, helping prevent flooding and easing the burden on urban infrastructure. This efficiency highlights their value, especially as cities like Toronto expect more severe weather events.
As for the future, McMahon believes many builders will continue to adopt green roofs, considering the long-term stormwater benefits. Public engagement is essential; residents can reach out to local officials to express their concerns about stormwater management and advocate for sustainable practices.
In the end, green roofs are not just environmental tools; they also enhance urban spaces, providing areas for people to enjoy nature. As cities grow, integrating nature into urban development will be crucial for sustainability and public well-being.
For more on stormwater management and urban sustainability, you can explore resources from the Green Roofs for Healthy Cities.
