Gross Rent Multiplier (GRM)

Gross rent multiplier is a property's sale price divided by its gross annual rent — a simple back-of-envelope comparable used in residential and small multifamily.

What it means

GRM = Price ÷ Gross Annual Rent. It is simpler than cap rate because it ignores expenses entirely — which is both its utility and its limitation.

GRM is common in small multifamily (fewer than 20 units) where expense ratios are similar across comparable properties. It is useless in commercial where expense structures vary (gross vs. net leases change everything). For institutional CRE, cap rate is the right measure.

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