What does the term 'repair costs' commonly include?

The term 'repair costs' specifically refers to the expenses incurred to restore or fix damage to property. This can encompass a variety of expenditures related to repairing physical structures, such as fixing leaks, replacing broken windows, or patching up walls, among others. These costs are crucial for maintaining the property's condition and can vary significantly based on the extent of the damage and the materials needed for the repair.

The other options, while related to property ownership, do not fall under the definition of repair costs. Revenue from property sales pertains to income generated from selling property, payments for property insurance are expenditures made to cover potential future damages rather than current repairs, and the cost of property taxes is a recurring obligation based on property ownership rather than direct expenses incurred to repair the property itself. Thus, the focus of 'repair costs' is clearly linked to tangible expenses aimed at fixing damage, making the first option the correct answer.