The ReHousing Low-Carbon Guide for Multiplex Conversions supports homeowners, builders, and designers in turning single-family homes into low-carbon multiplex housing. Grounded in real-world case studies, the guide outlines practical strategies for reducing embodied and operational emissions, while improving comfort, cost, and code compliance. With recommendations for envelope upgrades, material reuse, energy systems, and construction sequencing, the guide helps unlock climate-aligned housing supply through thoughtful, phased retrofits that work within existing building stock and neighbourhood character.
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In partnership with Northcrest, Ha/f Climate Design explored how rethinking street widths at Downsview can lower carbon emissions and build community resilience. By reducing road space and expanding green infrastructure, the study shows how smarter street design can cut infrastructure emissions, increase housing, add green space, and create safer, more sustainable public spaces for future residents.
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In collaboration with Local Works Studio,
Ha/f developed a reuse strategy for Waterhouse Square’s granite facade, treating it as an “urban quarry.” By prioritizing deconstruction, on-site reuse, and low-carbon fabrication, the project reduces waste and emissions while advancing the goals of London’s Circular Economy Roadmap for sustainable building practices.
Wellington House Policy, Strategy
Wellington House is a deconstruction and material reuse pilot project supported by the City of Guelph’s Circular Opportunity Innovation Launchpad.
The project diverted 90%+ of materials from landfill, showcasing the carbon, material, and cultural value of reclaiming building components over demolition.
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