It also wouldn't hurt to go door to door and inform the immediate neighbors, just as a professional courtesy. But yeah, I wonder if these people are aware that google and other companies are flying (or licensing footage from) satellites overhead and putting the stuff online for the world to see and use in useful ways. And then there are spy satellites which can zoom in on objects the size of human hair. Maybe they should be using umbrellas when outside. Oh wait, there is technology to see through most materials, too. Hmm.
At least in the USA, AFAIK, as explained to me by an attorney regarding "public view" and privacy, is the only privacy you are supposedly actually guaranteed is the privacy in your own home. And if you leave your blinds open and someone can see you from the sidewalk, or from another public right of way, you give up your privacy there too and are legally able to be photographed without permission. But the key phrase is "from a public right of way", like a public sidewalk or your own property or property you have permission to be on. You can't trespass.