Which of the following is NOT a service of real estate?

Mortgaging is not considered a traditional service of real estate in the same way that the other options are. In real estate, services typically refer to activities directly related to the buying, selling, and managing of properties. Appraising involves determining the value of a property, which is crucial for potential buyers and sellers. Exchanging refers to the process of trading one property for another, often seen in investment transactions. Leasing pertains to renting properties, a fundamental aspect of real estate transactions.

While mortgaging is an integral part of real estate transactions, as it involves financing the purchase of properties, it is primarily a banking and financial service rather than a direct real estate service. Thus, it does not fit within the standard definitions of services provided by real estate professionals.