The Greater Golden Horseshoe (GGH) is the fastest growing Global City Region in North America, with two thirds of the growth anticipated outside of the Toronto core, connected by rapid transit investments and lands owned by the province. Transit-Oriented Communities (TOC) are the leading direction to expand healthy, convenient, high-quality live-work-play along subways networks, Light Rail Transit (LRT) and across existing GO networks, creating a new form of "Regional City", an affordable landing ground for new families to meet GTHA's unprecedented population growth. With the right design, planning and execution, these TOC's can unlock the value of a "26 hour City", where the ability to walk to daily needs eliminates the high cost of commuting and car-ownership, providing "extra hours" everyday that improves quality of life and productivity, creates a nesting ground for high-quality jobs and employment, and moves our region towards a carbon-neutral future. Uptown Brampton Transit-Oriented Communities Toolkit explores a collaborative city-building model to empower effective collaboration and alignment among public sector, private sector, non-profit and local communities. Through an integrated design-based strategic framework, the Toolkit aims to shift development culture and accelerate implementation by amplifying synergies, creating new combined benefits, and fostering lateral thinking.