Which of the following is NOT a type of covenant associated with real estate?

The correct choice is the option describing the "Covenant of maintenance." This is because the traditional covenants associated with real estate primarily focus on the rights and ownership of the property.

The "Covenant of seisin" pertains to the grantor's assurance that they own the property and have the legal right to convey it. The "Covenant against encumbrances" guarantees that the property is free from encumbrances or limitations (like liens or easements) that have not been disclosed. The "Covenant of quiet enjoyment" ensures that the tenant or buyer will not be disturbed by others claiming a superior title to the property.

In contrast, the "Covenant of maintenance" is not recognized as a standard covenant in the context of real property agreements. While maintenance agreements can exist in various property management contracts or leases, they do not form a core legal covenant associated with the ownership or transfer of real estate itself. Thus, this distinction explains why it is not considered a type of covenant associated with real estate.