We have several large bur oak trees in the back yard (bur is relative to white oak). We had a house built, and the trees are about 15 feet away. The very next summer after the basement was excavated, they grew leaves without issue. That fall, the leaves didn't fall off, and this spring (second spring after build) the tree isn't growing any leaves. I understand oak trees can get "sick" when the soil is even disturbed, and that's my assumption. I would have though the very next spring would have been when we saw no leaves, but we did, and it was the second spring where the tree didn't grow leaves. Do you think the tree is dead, or just needing to heal and might bounce back? Is there any way to tell? Thank you.