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How It Works
The gross rent multiplier divides a property's price by its annual gross rental income. It provides a fast way to compare properties without digging into expenses. A lower GRM generally suggests better value.
GRM does not account for operating expenses, vacancies, or financing, so it works best as a first-pass screening tool. Use cap rate and cash-on-cash return for deeper analysis.
Example Problem
A duplex is listed for $300,000 and generates $36,000 per year in gross rent.
- GRM = $300,000 / $36,000 = 8.33
A comparable duplex priced at $350,000 with $36,000 in rent has a GRM of 9.72, making the first property the better value by this metric.
Frequently Asked Questions
What is a good gross rent multiplier?
GRM varies by market. In expensive coastal cities, GRMs of 15–20 are common. In affordable Midwest markets, 6–10 is typical. Always compare within the same area and property type.
Is GRM the same as cap rate?
No. GRM uses gross income and ignores expenses, while cap rate uses net operating income. A property with a low GRM could still have a poor cap rate if expenses are high.
Should I use monthly or annual rent for GRM?
The standard convention uses annual gross scheduled income. If monthly rent is $3,000, multiply by 12 to get $36,000 annual GSI before dividing into the property price.
Related Calculators
- Capitalization Rate Calculator — compare returns using net income.
- Net Income Multiplier Calculator — relate value to net income.
- Gross Operating Income Calculator — compute income after vacancy losses.
- Loan to Value Calculator — assess lending risk relative to property value.
- Vacancy & Credit Loss Calculator — estimate income lost to vacancies when computing gross income.
Reference: Brueggeman, William B. & Fisher, Jeffrey D. Real Estate Finance and Investments. McGraw-Hill Education.