If it is western soapberry, Sapindus drummondii, it will have semi-transparent amber berries with a black seed somewhat visible inside (when mature). Maybe in the picture the seeds aren't quite mature yet?
hortster

It looks like a Chinaberry to me...

Yea, I'm leaning towards Chinaberry now too, since there seem to be many of those in the area...

It's a drought-hardy weedy tree, whose main usage might be for a natural pesticide/fungicide:
"Azadirachtin, inhibits reproductive cycles among treated herbivore pests, buts degrades organically and poses no threats to treated or surrounding plants."

Here is a link that might be useful: Azadirachtin