Re: ..
If the notice is incorrect, then pointing this out to the local authority will buy you some time, but that is all. If this is the case they developer will be required to have a corrected notice in place for the relevant period again. It is worth doing since, as you say, other neighbours may not be aware of the scale of the development and may only think it applies to the one property.
It is worth noting that if the area is reasonably well served from transport and other perspectives, the local authority is likely to want this type of development, so you may face defeat in the long run, but you may as well make submissions regarding the nature of the development while the planners are in a position to impose conditions.
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