ProjectEnd
Superstar
As noted a few pages back, commercial developments tend to be far more often "on time" - residential developers are far more optimistic about completion dates as evidenced by the high % of owners who have occupancy moved forward. The experience with commercial developments shows that it CAN be done!
This is because residential developments can just send out letters to purchasers telling them that there will be a delay while commercial developments are tied to leases with serious financial penalties if dates are missed.