I suspect there's issues attaching it to the house itself, but for houses on the top of a hill such a setup can work well. That thing gets spinning really quickly some days.
It's on top of a relatively large hill in the suburbs, so it gets a lot of breeze. Scan around behind you and you'll see the extent of it. The traffic lights are just about at the top of that hill, so that house has at least a 180 degree view of the east, which is where the bay/ocean is and thus where breezes often blow from.
The site supplies separate wind inverters too. I guess that means that the turbines supply very different power to solar panels.