I don't think they look like bee hives either. We kept bees for years, then we moved, and can't have them. Still have the hives and other equipment. If we move again we'll try to go somewhere we can have bees again.
Based on the picture, that looks like a very small yard. I would not want the hives (if that's what they are) that close to the house. I think they will also cause a problem with the swimming pool.
Well, just showed the picture to DH. They could be beehives. He also said that would not be a good location. Perhaps they have a place to put them that is more in the country.