and that tree could very easily be the culprit. You must be on a slab foundation???
But, the tree's roots, I do not thing, could cause the foundation to actually rise or fall. Your foundation if slab is too thick and heavy.
Have you been in a drought?? Have you had a very large amount of rain recently???
Slabs move accordingly with the amount of water or lack of in the ground below the foundation.
What we do in Texas and other areas with a high clay content is to constantly water our foundation.
This definately works.
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