Staking out from another surveyor's station co-ordinates or mine?
If it's already under construction, stay with the original grid. 😎
I see the missing 0.04 has shrunk. Time marches on.
It is important to think about which tolerances need to be tight. Nobody is going to get excited if the foundation is .04 ft further from the boundary than the plans called for. They might scratch their heads if the foundation is 0.04 out of square. They will cuss a lot more if two nearby features are 0.04 off from each other.
Think about error propagation. If you lay out one side of the foundation from two control points and the other side of the foundation from two different control points, it is likely there will be a lot more error in the shape of the foundation. There are more error sources adding up than if you can do the layout from one setup and one backsight.
that's all great advice - many thanks its much appreciated 👍