It doesn't look like he has any food or water, do you know why he is out? If you drive by at the same time every day he could just be out there temporarily for whatever reason, like maybe he's becoming a nuisance with something, but they can't get rid of them/or don't want to so they set this temporary pen up for until they can get supplies to build something proper? Or maybe they alternate him with their other chickens because he's getting picked on, etc.
You should just knock on the door and ask.
The chair is also set up weird and makes me think somebody was just sitting out there watching it not too long ago, so he may still be being looked after even though you are not around to see it.
If I could confirm that the rooster was just being neglected then I would call somebody to come help him because that's animal cruelty otherwise. No food, no water... it's sunny, and he has no shade being provided to him from the tarp. Which is also it's own question because if he was being left out there all day when it's sunny and hot then I'm sure he would've dehydrated by now.