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How To Calculate and Use the Gross Rent Multiplier (GRM)


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As a real estate agent working with real estate investors, you will likely be doing quite a few market value analysis for each property finally purchased. The Gross Rental Multiplier (GRM) is easy to calculate, but isn't a very precise tool for ascertaining value. However, it is an excellent first quick value assessment tool to see if further more detailed analysis is warranted. In other words, if the GRM is way out high or low compared to recent comparable sold properties, it probably indicates a problem with the property or gross over-pricing.
Difficulty: Easy
Time Required: 5 Minutes

Here's How:

  1. Getting the GRM for recent sold properties:

    Market Value / Annual Gross Income = Gross Rent Multiplier (GRM)

    Property sold for $750,000 / $110,000 Annual Income = GRM of 6.82

  2. Estimating value of property based on GRM:

    Let's say that you did an analysis of recent comparable sold properties and found that, like the one above, their GRM's averaged around 6.75. Now you want to approximate the value of the property being considered for purchase. You know that its gross rental income is $68,000 annually.

    GRM X Annual Income = Market Value

    6.75 X $68,000 = $459,000

    If it's listed for sale at $695,000, you might not want to waste more time in looking at it for purchase.


  1. Don't get too reliant on this calculation, but it can be used to narrow down a crowded field of possible properties.
  2. We now have a forum for real estate investors to discuss strategies, share knowledge and have fun talking real estate investment. Join the forum now.

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