Quick Answer
GRM is a shortcut: take a property's price and divide it by the total rent it collects in a year. It's a fast way to screen and rank multiple listings before running deeper numbers like net operating income or cash flow. A lower GRM can point to better relative value, but it ignores expenses, so it's a starting point, not a final answer.
- Formula
- Price divided by yearly gross rent
- Best used for
- Quickly ranking multiple properties
- What it ignores
- Operating expenses and financing
- Pair with
- Cap rate and cash flow for a full picture
How to Calculate GRM
To find GRM, divide a property's price by the total rent it brings in over a year. Because the math is simple, it's often the first filter investors apply to a list of potential rental properties.
GRM works in reverse too: multiplying a target GRM by a property's expected annual rent gives a rough sense of what it should be priced at, which is useful when screening a batch of properties quickly.
Where GRM Falls Short
GRM doesn't account for operating expenses, vacancy, or financing, so two properties with the same GRM can perform very differently once real costs are factored in. An older property may need far more in maintenance and management than a newer one, even at the same rent-to-price ratio.
Because of that, investors use GRM to narrow a list of candidates, then move to cap rate and cash flow for a fuller picture before making an offer. Our agents can help pull comparable rent data for properties you're considering across Central Indiana.
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Frequently Asked Questions — Gross rent multiplier (GRM)
Is a lower GRM always better?
A lower GRM often suggests better relative value, but it should be checked against expenses, condition, and location before drawing conclusions.
How is GRM different from cap rate?
GRM uses gross rent and ignores expenses, while cap rate uses net operating income after expenses, so cap rate gives a more complete picture of return.
What's considered a typical GRM?
Typical ranges vary widely by market, property type, and rent level, so GRM is most useful for comparing similar properties to each other rather than against a fixed target.
Can GRM be used for single-family rentals?
Yes, GRM can be applied to any rental property, though it's especially popular as a fast screening tool for multi-family properties with several rent rolls to compare.