Sunday Mar 15, 2026
SS273: Multifamily Expense Ratio

Understanding the multifamily operating expense ratio is critical for analyzing apartment building investments. Two properties may generate the same income, but their operating expenses can be dramatically different — and that difference can make or break your investment returns.
In this episode of Strategy Saturday, Charles Carillo explains how the operating expense ratio in real estate works, how to calculate it, and how investors use it to evaluate multifamily deals. You’ll learn what expenses are included, what costs are excluded, and why the commonly referenced 50% expense rule can be a useful benchmark when underwriting apartment buildings.
This video also covers typical expense ratio ranges for Class A, Class B, and Class C multifamily properties, and explains how factors like property age, market conditions, management efficiency, and deferred maintenance can impact operating expenses.
Whether you're analyzing your first rental property or evaluating a large apartment complex, understanding the expense ratio for multifamily investing can help you identify hidden risks and avoid bad deals.
In this video you’ll learn:
• What the operating expense ratio is in multifamily real estate
• How to calculate operating expense ratio step-by-step
• What operating expenses are included in real estate analysis
• Typical expense ratio benchmarks for Class A, B, and C properties
• Common underwriting mistakes investors make when analyzing expenses
• How expense ratios help investors identify potential deal risks
Understanding operating expenses is one of the most important skills in multifamily underwriting, and mastering this metric will help you evaluate deals more confidently.
Links Referenced in Episode:
- SS114: Most Important Expenses When Underwriting an Apartment Building - https://youtu.be/xWtVXSre3xk
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