[WhipperSnapper]

Lowest entrance is what Maldive interpreted as significant

In the link that you posted it states a significant entrance is," access to one or more primary uses via elevators as opposed to ground floor retail or other uses that solely relate/connect to the adjacent, immediate external environment.

As I already posted, there is no need to measure or approximate. The geodetic height for the ground is provided right outside the main residential entrance. True, The top of the ground floor slab may be slightly off from the point of reference. My interests have always been representing the real height of a building than an official one. A .5 metre solid parapet wall adds real height but, it won't appear in the official calculations.

Most of the world isn't as flat as Toronto so the standard of measured from main entrance was adopted. The article is just insulting calling every editor with a helluva lot more experience than UT's fledgling database editors fanboys.