Looks like a very large crape myrtle to me. They can get huge like that. My grandmother had one that was about 30 feet tall.

Another vote for CM, a well cared for CM.. Usually when that tall or taller, they flower sparsely plus being so tall you can only enjoy blooms from a distance

no way, there are tons of CM around town, I even have two lil babies in my yard, this tree does not look like anything around town.

i am gonna freak out if it is a CM, I mean seriously ... freak out, it truly does not look like anything around town and this place is littered with CM, at every shopping plaza, and half the home lawns and the majority of road ways...

Can you get a closeup of the leaves?

Maybe a Queen Crape Myrtle, which gets huge and has larger leaves. ETA: scroll down a litte on the page for the insert on Queen Crape Myrtle.

http://www.south-florida-plant-guide.com/crape-myrtle-tree.html

There are several crape myrtle varieties that can get 25-30 feet tall and have a large spread, Muskogee for one.

I plan on trying to get closer, it is raining now. I am thinking maybe a purple glory tree. But I drive by it so fast so I never get a good look at.

I didn't know they got that big. I was going to guess that, but AFAIK they only got to about 15 feet.

It could be a jacaronda,spelling probably wrong.

No, Jacarandas bloom in early spring.

And Jac's are a lighter shade of purple (the ones I have seen in the area) this one is a deep saturated royal purple, the picture gives it a pinker tone than it has in real life.

Eric nailed it, as always.

Tibouchina granulosa usually grows 10-12 ft but can reach 20ft with good care. In habitat (Brazil) they can grow 25-30ft. I've seen some around Orlando around 15ft. There used to be one in my mom's neighborhood near downtown Orlando that was almost 20ft tall.

Could you possibly get a closeup of flowers and foliage. As I revisit this post, the canopy looks too full to be a CM. Now not so sure.

It is not raining this morning, but the tree is back lite with the sun so getting a good shot with phone is hard and in late day the tree is shaded.

I really don't think it is a CM, looks like the Purple Glory Tree and again the flower color comes out more pink in time in the pic than in real life.

Wow! I've been following this thread and Eric is absolutely correct (as always). That is the biggest Tibouchina I've ever seen.

It's not that unusual for them to get that big around here (Stuart)--there were plenty of huge ones before the hurricanes, but they are brittle and break easily in a high wind.

It is really a beautiful tree and so enjoy driving by it daily. I should stick a thank you card in the ppl's mail box!

Walked down and took a couple more. I am on the back side of the tree were it gets less sun.

The 1st pic in the original post was the front side of the tree, which is seen from the front yard, the tree is in the back yard and they back up to busy street with sidewalk so I don't feel funny about walking up to snap a pic of the back, but the front would revel the truth about me... I am stalking their tree! Lol

I withdraw my guess. It is not CM tree but I don't know what it is.