The Ficus Looking Tree Started Growing Out Of Nowhere.
Are you sure that it's a rhododendron... It also looks like a poisonous plant called manchineel... Can you roll that out?
Certified GKH Gardening Expert
It is not a Manchaneel. I can say that.
I'm not completely certain, just from one photo, but Rhododendron, especially a larger leaf variety, is most likely.
Behind that could be Pachira glabra, or possibly Prunus laurocerasus.
That should help narrow down some possibilities.
Waiting for the flowers can give a better indication, and budding characteristics will help, here, as well.