My home course for awhile was Thornberry Creek CC in Green Bay, which has 27 holes built by Rick Jacobsen. There was a 9 hole course built first, and then a "championship" 18 built later, in two stages. It has non-returning nines; what became holes 1-6 and 16-18 were built first and opened before the second nine were even under construction; the routing underwent several changes before they were built.
Four of the newer holes were routed along a large lake, and it was routed in such a way that the water was on the right side of each. This included two par-fives (originally 10 & 13), a par-three (originally 14) and a par four (originally 15). The developer made him reverse the routing so that the water would all be on the left. So they would have then become 10, 11, 12, and 15.
Looking at the original plan and the finished product, the designs are more or less the same both ways. I always thought about playing them backwards one day knowing that that is how they were originally routed.
As an aside, they ended up being changed to play as 7, 8, 9, and 15, as the three holes which were supposed to be built as 2, 3, and 4 (across a road from 1 green and 5 tee) were eliminated and replaced by three newer holes which play as 11, 12, and 13.
The original 2, 3, and 4 were routed in a heavily wooded area and would have played around and over a natural creek. But the developer scrapped them because he couldn't put any homes there.
Instead, they were replaced by three holes at the other end of the property, which is open, fairly lifeless, and has views of power lines and nearby highways. But there's room for houses there.
I played the finished course every day for a couple of years, and I have a copy of the original routing plan. It hurts to look at it, knowing how much better the course would have been. Plus we would have lived on the 5th hole instead of the 2nd, which would have been a nice point in the round to stop and get refreshments to smuggle out onto the course.
I guess this is what happens when developers begin designing the courses.