Maybe Pittosporum undulatum (Victorian box)? This is evergreen, right?

Looks like a broad-leaf privet, also called tree privet or Japanese privet. They can get up to 30 feet tall. They are invasive and not good in hurricanes. If you don't need it, I'd take it out.

Do you have any info on the flowers? A dried one on the ground could help. Could it be a Halesia? Where are you located?

Looks like the bark appearance changes as the tree ages. Mine is 17 years old max. Lots of variation given for height but this is another case of someone planting a tall tree too close to the house. Guess Im lucky the driveway hasnt lifted yet. Ugh!!