This study reviews the history of climate policymaking in British Columbia (BC) and the City of Vancouver, two leaders globally in subnational climate policy. Focusing on the transportation and buildings sectors, the study overviews early policy advancements in BC in the context of subnational leadership and policy transfer. It then discusses the strengths and weaknesses of the province's recent CleanBC and Roadmap plans, touching on relevant Vancouver policies. The analysis identifies key policy gaps and possible solutions for meeting future emissions reduction targets, noting opportunities moving forward for the province and other jurisdictions looking to pursue similarly ambitious climate policy.