1) Green belts. These exist for good reason -- while Canada is enormous, some of its cities are located within narrow zones of super-arable land that has food

1) Green belts. These exist for good reason -- while Canada is enormous, some of its cities are located within narrow zones of super-arable land that has food security implications if it's developed. Also, greenbelts prevent climate-change-destroying sprawl. 2) Red tape. Canada has a similar problem as Cali, where municipalities have basically declared all buildings larger than a 2 storey detached house to be illegal. The only way anything gets built is through zoning and planning variance committees and provincial quasilegal arbitrators, which take years and add ferocious amounts of carrying costs and legal fees. Provinces are only just getting started tackling this. 3) Industrial capacity. There isn't the available skilled manpower and equipment needed to double and triple our per-year output.