I suspect this may be a Florida wildflower since the people that previously owned the property were clearly not into plants. A mostly wooded property with only a couple big boxstore hibiscus next to the house for landscaping. Yet, I've lived here for 20 years and have never seen it anywhere else.
It was growing next to a large oak tree in full shade, yet when the tree had to be removed it grew in full sun.
Less then 3' tall, nearly as wide, succulent non-woody stems, star-shaped pink flowers in clusters. (The single flower in the photo is on a plant started from a cutting.) Killed back by a freeze, but comes back from the base, otherwise evergreen (with adequate winter watering). Starts readily from cuttings and there are volunteer seedlings though never weedy. Notice the tiny notch in the tip of the leaves. This is normal. Drought tolerant but the longer the drought the worse it looks. Bounces back again with water.
I have done multiple internet searches over the years but have never been able to find an ID.
