I am somewhat amused by your apparent belief in the" 75% sold" statement. I suspect you heard this from a salesman and s/he does have a vested interest in making purchasers and potential purchasers think a start date is close. Caveat emptor!I confirmed yesterday that they have sold 75%. Construction is supposed to start spring 2017 so 2020 sounds wildly optimistic.
With the reviews still ongoing, the project size and the history of the builder I'm putting my money on mid 2021 or a four year build.
This works out really well for me since I have purchased a retirement downsizing unit and am really looking forward to moving back downtown from the burbs after 25 years.