Why start with feasibility?
Because the question on a residential site is not what could be built but what will be consented, and the gap between the two is where developers lose money. A feasibility study establishes the realistic quantum early enough for it to inform the offer rather than explain the loss.
That is a different exercise from a design: it tests density, massing, amenity, parking and daylight against local policy, and it is worth having before a site is bought rather than after.


