Free Gross Rent Multiplier Calculator

GRM = Property Price ÷ Annual Gross Rent. It measures how many years of gross rent equal the purchase price. A $300,000 property renting for $2,500/month ($30,000/year) has a GRM of 10. Lower GRM means better value relative to rent — but always follow up with full expense analysis.

GRM benchmarks vary by market. In cash flow markets (Midwest, Southeast) a GRM of 7-10 is typical. In appreciation markets (coastal cities) GRM of 15-20+ is common. Always compare to local market GRMs for similar properties — an absolute number means nothing without local context.

GRM is a quick screening tool. Properties above your market's typical GRM are relatively expensive; below it are relatively cheap. Use GRM to filter a list of properties quickly, then run full NOI and cash flow analysis on those that pass your GRM threshold.

GRM uses gross rent (before expenses); cap rate uses NOI (after expenses). GRM is faster to calculate and useful for quick comparisons but ignores expense differences between properties. Cap rate is more accurate for valuation but requires full expense data. Use GRM to filter, cap rate to decide.

GRM ignores operating expenses, vacancy, and financing costs. Two identical GRM properties could have very different net returns if one has higher taxes, older systems, or worse management. Never buy based on GRM alone — always run full cash flow analysis on any property that passes the GRM screen.

GRM rises as property prices increase faster than rents (common in appreciation markets) and falls as rents rise faster than prices (common in tight rental markets). In high-rate environments, rising borrowing costs reduce what buyers can pay, potentially compressing GRMs in some markets.