Real estate, not real property.

But, you are probably talking about how i describe ownership of land in the future. And, similar to food not being for sale, but traded between growers, the land will be where you live, and not for sale. But, there may be trades between communities. However, i believe that there will be enough buffer around the small communities that trade of land will not happen very often.

And much more of the land will be usable. Land will simultaneously become to valuable to put a price on, and too cheap that no one would pay for it.