We have a fir tree planted at the front corner of our house. We recently had foundation problems due to that side of the house sinking. We live in north Texas. The company that fixed our foundation advised that the tree was using all the water and therefore, causing our foundation problems and advised us to remove it. It is about 20ft tall and now we are wondering if we should undertake the task of removing it. An ideas or suggestions would be appreciated. Thank you.
If the tree is within a few feet of the foundation it should be removed. Please consider hiring an arborist to remove it, particularly, as Ambo100 points out, if it could fall on your car, the sidewalk or another house. Some cities have ordinances prohibiting the removal of trees above a certain size. Best to check before cutting.
Fir trees are not known to have aggressive water seeking roots but many factors play into how far a tree's roots will look for water:
The Morton Arboretum states
I can't determine without a local inspection whether your tree is the source of the problems but it is too close. Most trees should be at least ten feet from your house and twenty is better. A rule of thumb is that a tree should be a distance away from your house equal to its mature height.