How to use GRM
GRM is a rough screening metric. It ignores expenses, debt, tax, repairs and capex, so it should be followed by cap rate and cash-flow analysis before any decision.
Example
A property priced at 600,000 with 60,000 in annual gross rent has a GRM of 10. If you apply a 5% vacancy allowance, effective gross rent is 57,000 and adjusted GRM is about 10.5.
Common mistakes
Do not compare GRM across markets without checking local rent levels, expenses, taxes and property condition. Low GRM is not automatically a good deal.
Limitations
This is not investment advice. GRM ignores operating expenses, financing, repairs, capital expenditures, vacancies beyond your input and resale risk.
Last reviewed: 2026-05-17