Ornamental cherry, likely Kanzan. It's unbelievable a realtor wouldn't recognise a cherry. They are incredibly common.

Compare with Solanum macranthum.

I have occasionally seen a small white flowering landscape tree that puts on a real show here in Florida around December every year when nothing else is. I haven't seen very many of them, but they are quite stunning in full bloom, but never knew what they were. I have wanted to possibly procure one, but didn't know what they were. It is a very bright white when in bloom & totally covered sort of like flowering pear in color. Sorry no pics, but there can't many be that many small white flowering trees that bloom in December here in 9B.

@gyr_falcon - You win the prize. I think you got it right. It's either Euphorbia leucocephala or something nearly identical. Common name Pascuita, Snows of Kilimanjaro, Christmas Flower Bush, etc. The leaves look similar to this. For such a beautiful specimen I have only ever seen 1-2 before here in 9B. The description says zone 10, but the couple of ones I have seen in 9B look very healthy & happy. It blooms from Nov - Jan which would be the right time. Bright white flowers, small tree or large bush. Quite stunning & showy in full bloom in winter. I have wanting to know what it was for a couple of years now so thank you very very much.