On 22 Oct, 08:31, wrote:
On Oct 22, 1:03 am, DerbyDad03 wrote:

Why would it be easier to be restricted to working on one side of the
opening than to be able to work from both sides?
In addition, since the deck should be lower than the threshold to
account for rain, snow, leaves, etc. why would the deck make it harder
to cut the door and set the threshold?

Because standing and working at knee-to-waist height is easier than
working on your hands and knees at floor level, maybe? You put the
deck in first and you're restricted to crawling around on a hard,
rough deck surface to do the outside portion of the work. If this is
typical construction, the first floor is 2-3' above ground level.

At best, I'll grant you a 50-50 split. No deck makes the top of the
door/window 2 - 3 higher than it would otherwise be, assuming the
first floor is 2-3' above ground level. This would probably require
the use of a ladder that would not be required if the deck was already
there. On the other hand, the OP simply said "stairs" but didn't give
us a height, so we're both making assumptions.

In any case, 2 feet or 10, I would rather (and did) have a platform to
work of off. More time is spent up-right when removing a window and
installing a door than "crawling around on a hard, rough deck
surface".