Property (real property) rights certainly do exist, but they are subject to many restrictions, controls and limitations. Some are imposed by governments, some, like easments, liens and covenants, are legally-enforceable private agreements.
Specific areas that I am familiar with include riparian rights and wetland designations. The trend over the last several decades in the U.S. had been for government bodies to define larger areas as wetlands to increase their control over what can be done with the land. This can be severly restrictive to the landowner, as it often extends to buildings and roads near, but not on, a lake or stream, albeit on private land.
But there is a backlash developing to this extreme control. In Wisconsin, the current definition of wetlands includes any area that is deep enough to float a canoe at least one day a year. (No, I’m not kidding.) As you can imagine, this allows the DNR (Dept. of Natural Resources) nearly unlimited control over land that most people wouldn’t call wetland at all, at least 364 days a year.
Not surprisingly, DNR officials have been known to use this extreme power capriciously.
The backlash has caused a bill to be introduced into the Wisconsin legislature redefining wetlands as that which has to float a canoe for six months of the year. Since this would remove the DNR’s control from most creeks and swamps, many environmentalists are very upset. The final outcome is likely to be a compromise between the two extremes according to Rep. Gary Bies.
In the case of riparian rights – the rights of a landowner adjacent to a body of water – these can be defined differently by the states. In Wisconsin, if Lake Michigan recedes naturally, as it has for the past 5 years, my lakeside property doesn’t get any bigger in the official records, but my use and control of everything down to the water’s edge is increased. Conversely, a rising lake will not change the official size of my property, but will decrease my control and use, since the land under the water is no longer under my control (but I still have to pay taxes on it!).
I believe (IANAL) that other states (California?) do not allow private ownership of land adjacent to the ocean, so a beachcomber is on public land. In Wisconsin, a beachcomber must legally “have a wet foot” if he walks on my beach or he is trespassing.