A previous builder landed at $47k for the pool but didn't want to deal with the enclosure supports under the decking. So that proposal sits in the file atm. However, there is another consideration that isn't present on my drawing because I was lazy and didn't want to model them all out.
The issue being trees.
All along the North fence-line are trees every bit of thirty feet in height or more. The limbs of said trees extend at least half way across the back yard. My initial thoughts were to trim the limbs but later thinking on the matter ( especially when the warranty is only one year ) brought the concerns about the tree roots to mind. Since most tree roots will spread as far out as the branches do, this may very well be a project killer.
These trees are far enough away from the house for the root system not to be an issue, but the entire pool will sit MUCH closer to them and I'm concerned that the root system will absolutely wreak havoc with the level and / or outright destroy the gunite shell. A very expensive issue years down the road far after the warranty has expired.
While the trees could be removed, it would be an expensive undertaking and would add just that much more cost to the entire project as it is and it really hasn't even started yet. . .
There is a very good chance that the trees are the iceberg that will take the ship down here.