I work in assessment. In assessment we divide things up into neighbourhoods based on the similarities between house prices, in other words in each neighbourhood the house prices are rise and fall together, and one can set factors for that neighbourhood to multiply against the base house prices when providing assessed values. In other words, all we look at to define neighbourhoods in housing price patterns. These assessment neighbourhoods are something completely different than actual neighbourhoods in definition, size, determining factors, etc. The neighbourhood I live in as per my city is completely different than the assessment neighbourhood I live in. There is probably also a census neighbourhood used by Statistics Canada, but we are not mapping either assessment or statistics neighbourhoods.
The map you point out for the Waverley project does have the Bridgepoint Centre name on it; but the map seems to indicate even more that these are names of housing developments.
The website I had already found. That is to promote the development. Developers will often call what they are building a neighbourhood; that is an advertising method, but that does not make it a neighbourhood.
You will notice that you yourself are calling this a development. I think that's an important indicator right there, you call it that because developments are built. Neighbourhoods cannot be built or dictated. Neighbourhoods are defined by areas in which, in general, the people have similar economic status and similar political views among other things. These developments are small and right beside each other; there is not going to be significant differences between the residents in each one.
You also talk about calling it a housing development until it is complete and then turning it into a neighbourhood. You are not understanding that there is a big difference between the two. We don't do that; neighbourhoods are made up of multiple housing developments plus much, much more. These have all the hallmarks of housing developments and nothing beyond that.