Pics are self explanatory. I’ve had two professional tree services out to assess and advise regarding removal. Both said they didn’t know what it is (bark abnormality) but don’t worry about it, tree is healthy. House was built in 1989 and both thought the tree was about 70 years old. Covenants are very strict about minimizing tree removal even for new construction.
In this part of south AL, oak trees and magnolias are everywhere, many leaning over houses with seemingly no concern. It was its proximity to our house that raised my questions. Because a large crane would be required to remove it, the cost would be significant. Wondering if anyone here has seen this bark issue.