According to terminology in classical economics, land is a nature-given, original factor of production. When it is combined with labor (the other original factor of production) and the same material is rearranged into an improved, useful form, either a capital good or a consumers’ is produced. In other words, labor mixed with land produces capital goods and consumers’ goods.
In Lockean property theory, a man owns property when he mixes his labor with land, thereby improving it (making it more useful). But then, according to the above classical economics terminology, the land would not be land anymore.
It seems then, if one were to use both classical economics and Lockean terminology (and adhere to the Lockean view of property rights), one must say that land cannot be owned, and that only capital goods and consumer’s goods (and perhaps one’s own labor, in a manner of speaking) can be owned.
And of course this in inconsistent with the general practice of people who adhere to both traditions, who very frequently speak of land-owning.
Well, the land is transformed into a good. So, no, you can’t own the land, but you can own the stuff previously known as land. That’s how I would understand it. So, I think what is then referred to as land isn’t really land, but is a euphemism for what was previously called land. For example, if build a house on a plot of land, and then sell the house and the land the house it built on, what I am really saying is that I am selling the garden, the driveway, the grass, the walkways, etc. that were previously known as land, plus the house.