Not sure if it counts, but if it does then I think it'll win by a country mile:
The
Senakw lands at the foot of the Burrard bridge in Vancouver, on the opposite side from downtown, were ceded back to the Squamish nation in 2001. They're currently beginning construction of a massive highrise development that will have 6,000 housing units on 10.5 acres.
Since these are First Nations lands, the City has no input into the development process, and even say so on their
city planning website. Local NIMBYs tried to stop the development but it got
thrown out in court.
There's an even bigger First Nations-led development planned at another site further west, called the Jericho Lands, but that's much earlier in the planning stages.