Gross Rent Multiplier Calculator

Enter monthly rent and GRM to see indicated value.

The formula

GRM = Property Price / Gross Annual Rent. A GRM of 12 means the property costs 12 times its annual rent. Lower is generally better for investors.

How to use it

GRM is a quick screening tool. Find the market GRM by dividing sale prices of comparable rentals by their annual gross rent. Apply that GRM to your subject property's rent to estimate value.

GRM vs cap rate

GRM only uses gross rent -- it ignores vacancies and operating expenses. Cap rate uses net operating income (NOI), making it more accurate but requiring more data. Use GRM for quick screens, cap rate for detailed analysis.

Typical ranges

Residential GRM typically runs 8-16x depending on market. A GRM of 8 means strong cash flow; 16+ means thin returns. Always compare to local market GRMs, not national averages.

What is a good gross rent multiplier?

It depends on the market, but generally: below 8 is excellent (strong cash flow), 8-12 is good, 12-15 is average, above 15 is expensive. Always compare against similar properties in the same area -- a GRM of 15 might be normal in San Francisco but poor in Cleveland.

How is GRM different from cap rate?

GRM uses gross rent and ignores expenses. Cap rate uses net operating income (NOI) -- gross rent minus vacancy and operating expenses. Cap rate is more accurate but requires more data. GRM is faster and better for initial screening.

How do appraisers use GRM?

In the income approach, appraisers can use GRM as a quick valuation check. They find the market GRM from comparable rental sales and apply it to the subject's gross rent. It's often used alongside direct capitalization (NOI / cap rate) to support the income approach conclusion.

How do I find the market GRM?

Divide the sale prices of recently sold comparable rental properties by their gross annual rent at time of sale. Use at least 3-5 comparable sales. The resulting GRM range is your market benchmark.