@Amari , that box has been used as you can tell by the worn off stain around the entrance. It's good to have branches close to the box as it helps the young owls to practice short flights; so I think it's well placed. It might have been used by owls or other birds sufficiently that it has a deep build-up of bedding inside. If the exit hole becomes too close to the nest height there is a danger that the young owls will be able to put themselves in danger too early in their development, so the owls will overlook it as a nest site.
In daylight you wouldn't ever know there were owls in the box from the ground and when nesting you will only see them in a short window of time at twilight. Though if you lived by the box you would definitely have heard the owlets.
It would be worth having a look inside just now and see if it needs a clean-out...best left completely empty. It's also worth checking how secure it is after these few years because obviously, it would be a disaster if it landed on anyones head!