Hi, I'm in the process of buying a house and there is a big old oak tree (in the backyard) which is very close (around 38 inches) to the foundation of the house. The tree is almost 20+ yrs old while the house is just 3 yrs old. So the tree existed before the house was built. I had an arborist come over and take look and he says is perfectly fine,since the "fast growth" of the tree is already over. There will be extremely slow growth in future and very unlikley that it will affect the foundation. The tree type is Live Oak Tree (i live in central texas). The house is built using slab-grade foundation type. Please give your feedback about the risks.