"the purchaser has the right to back out of the contract if the completed structure varies significantly from the version presented at the time of purchase. This may be voided if the changes are presented to the purchaser during the design process, and allow the purchaser to decide whether or not to back out of the purchase.
A significant variance can be regarded as:
1. Change is cladding type for a large portion, or visually important portion of the facade
2. Change in amount of elevators
3. change in floorplates
4. change in amenities
5. change in interior condo finishings"
there. wasn't that hard. still allows for crappy buildings to be constructed, but ensures that purchasers know they are buying a crappy building. People who bought here looked at those renders and saw a half decent building, not a complete PoS that it is turning out to be.