What is a limitation of the Gross Rent Multiplier (GRM) as a valuation metric?

• A. It ignores operating expenses and vacancy, giving only a rough estimate
• B. It accounts for depreciation
• C. It directly measures net operating income
• D. It is unaffected by vacancy rates

Answer: (A)

The main idea here is that GRM is a quick, rough screening tool that relates price to gross rent, without accounting for the costs of running the property. Because it uses gross rent (often gross potential rent or actual gross rent) and doesn't subtract operating expenses like property taxes, insurance, maintenance, management fees, utilities, or vacancies, it can overstate a property's value, especially if those costs are high or vacancy is significant. That’s why it’s considered a limitation: it provides only a rough estimate and ignores the cash outflows needed to actually operate the building.

Depreciation isn’t reflected in GRM, so it doesn’t measure NOI or cash flow after expenses. Since NOI is defined as gross operating income minus operating expenses, GRM doesn’t directly capture that. And vacancy rates matter to actual cash flow; using gross rent ignores how vacancy reduces income, so saying GRM is unaffected by vacancy isn’t accurate.