There is a reason why we focus on the journey and experience of a renovation process as much as the the quality of the product delivery. Budgets are not limitless and datelines are always imminent.
I see these as a good thing, as it sets boundaries to the possibilities of any project.
This is where a designer will (or should) be on the same page and set priorities of the interior design endeavours to align with any given boundaries. New development and sub-sale apartment units also sets different boundaries.
Here are a few distinction between the two, differentiated by the top 3 areas where home owners usually allocate their budget.
These points are even more relevant to me on a personal level now, as I am currently on a search for a new home.