Just do a Google search for real estate contracts for your state.
Like many things, the concept of who "owns" the airspace above a plot of land can be a legally thorny issue. For the most part, however, it is generally accepted that countries own the airspace above their borders but only up to altitudes at which terrestial aircraft operate and that they do NOT own or control altitudes at which spacecraft, such as LEO satellites, operate. But that doesn't mean that you can park anything you want to in the skies above another nation.
The main point, however, is that the individual land owners (nor a city, county, or state) do not have ownership over the air.
In general (in the U.S.), you are buying the surface rights, which typically extend down to about 200ft below the ground. You do not own the mineral (i.e., subsurface) rights and seldom do you own the water rights. In most cases, mineral rights are superior to surface rights, which means that if the owner of the mineral rights wants to sink a mine shaft or oil well or build a road to access their claim and it requires demolishing your house that there is nothing you can do about it and they don't owe you any compensation. In fact, in theory they could sue you for any additional cost they have to incur in order to tear your house down. Now, stuff like that almost never happens (think of the P.R. disaster it would be for any company that did that) and most states have put in legal codes to provide some degree of protection for the surface rights owner. However, these protections are mostly in the form of requiring the mineral rights holder to demonstrate that there aren't other options available to them that are equally viable.
Like many things, the concept of who "owns" the airspace above a plot of land can be a legally thorny issue. For the most part, however, it is generally accepted that countries own the airspace above their borders but only up to altitudes at which terrestial aircraft operate and that they do NOT own or control altitudes at which spacecraft, such as LEO satellites, operate. But that doesn't mean that you can park anything you want to in the skies above another nation.
The main point, however, is that the individual land owners (nor a city, county, or state) do not have ownership over the air.
In general (in the U.S.), you are buying the surface rights, which typically extend down to about 200ft below the ground. You do not own the mineral (i.e., subsurface) rights and seldom do you own the water rights. In most cases, mineral rights are superior to surface rights, which means that if the owner of the mineral rights wants to sink a mine shaft or oil well or build a road to access their claim and it requires demolishing your house that there is nothing you can do about it and they don't owe you any compensation. In fact, in theory they could sue you for any additional cost they have to incur in order to tear your house down. Now, stuff like that almost never happens (think of the P.R. disaster it would be for any company that did that) and most states have put in legal codes to provide some degree of protection for the surface rights owner. However, these protections are mostly in the form of requiring the mineral rights holder to demonstrate that there aren't other options available to them that are equally viable.