Subject to the restrictions on which he may have agreed by contract with the subsoil owner, the superficiary holds upon his immovable property all the prerogatives of an owner: he can hypothec it (also called mortgage), rent it, sell it, bequeath it by Will or use it, for example, to establish a co-ownership, regardless of the subsoil. The subsoil owner similarly retains all the prerogatives of an owner on his own immovable property.
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