Which statement best describes the typical components and modeling approach of an operating expense schedule in real estate financial modeling?

• A. Fixed vs variable expenses (property taxes, insurance, management, utilities, repairs); escalations; sometimes controllable vs non-controllable; model with inflation drivers.
• B. Only fixed expenses.
• C. Only variable expenses.
• D. Neither fixed nor variable.

Answer: (A)

Operating expense schedules in real estate modeling are built around a realistic mix of costs and how they grow over time. The best answer reflects that expenses are split into fixed and variable components (for example, property taxes and insurance often behave like fixed base costs while management fees, utilities, and repairs can vary with occupancy or usage). Each line item is typically given an escalation path, since costs rise with inflation and other drivers, and many models also separate costs into controllable versus non-controllable categories to reflect how much management can adjust them and to shape budgeting and sensitivity analysis. Modeling with inflation drivers and item-specific escalations is standard practice because it aligns forecasted expenses with the underlying economic forces and property performance.

The other options are too narrow, focusing only on fixed or only on variable costs or suggesting neither category is relevant, which fails to capture how operating expenses behave and are forecast in real estate models.