I think it's both. I think an original, older property has been renovated and some newer outbuildings have been constructed. That's what it looks like to me.
The entire property when I bought it consited of a 2,200 square foot home and a 900 square ft stable. We completely renovated both. We turned the stable into a loft apartment first, then we lived in that for six months while we were doing the house, addition, and putting the pool in.
We've kept the old world feel to it just reno'ed everything. It's awesome for entertaining as well. We have great little parties.