A building's gross rent multiplier (GRM) is 120. If the monthly rent is $2,500, what is the indicated value?
Correct Answer
A) $300,000
Value = Monthly Rent × GRM. $2,500 × 120 = $300,000. The GRM is a quick estimation tool that multiplies monthly rent by the market-derived multiplier.
Why This Is the Correct Answer
Option A is correct because the GRM formula is straightforward: Property Value = Monthly Rent × GRM. Substituting the given values: $2,500 × 120 = $300,000. This calculation directly applies the fundamental GRM relationship where the multiplier (120) represents how many times the monthly rent equals the property's estimated value. The GRM of 120 means the property is worth 120 times its monthly rental income.
Why the Other Options Are Wrong
Option B: $250,000
$250,000 would result from incorrectly dividing $300,000 by 1.2 or using an incorrect GRM of 100 instead of 120, showing a computational error in applying the basic formula.
Option C: $3,600,000
$3,600,000 appears to result from multiplying monthly rent by 12 months ($30,000 annual rent) and then by 120, incorrectly mixing annual and monthly calculations in the GRM formula.
Option D: $20,833
$20,833 results from incorrectly dividing the monthly rent ($2,500) by the GRM (120) instead of multiplying, demonstrating a fundamental misunderstanding of the GRM formula direction.
GRM = Gross Rent MULTIPLY
Remember 'GRM = Gross Rent MULTIPLY' - the word 'Multiplier' tells you to MULTIPLY the monthly rent BY the GRM number. Think 'Monthly Money × Magic Number = Market Value'
How to use: When you see a GRM problem, immediately identify the monthly rent and GRM number, then remember 'MULTIPLY not divide' - the GRM multiplies the rent to get value, never divides it.
Exam Tip
Always double-check that you're multiplying (not dividing) and using monthly rent (not annual) - these are the two most common errors on GRM questions.
Common Mistakes to Avoid
- -Dividing monthly rent by GRM instead of multiplying
- -Using annual rent instead of monthly rent in the calculation
- -Confusing GRM with cap rate formulas and using net income instead of gross rent
Concept Deep Dive
Analysis
The Gross Rent Multiplier (GRM) is a quick valuation tool used in real estate appraisal to estimate property value based on rental income. It represents the relationship between a property's market value and its gross monthly rental income. The GRM is calculated by dividing the sale price of comparable properties by their monthly rent, creating a market-derived multiplier. This method provides a rapid estimation technique but should be used alongside other valuation approaches for comprehensive analysis. The GRM assumes that properties with similar rent-to-value ratios will have comparable market values.
Background Knowledge
The GRM is derived from market data by analyzing recent sales of comparable rental properties and calculating the ratio of sale price to monthly rent. Unlike capitalization rates which use net operating income, GRM uses gross rental income and doesn't account for expenses, making it a simpler but less precise valuation method.
Real-World Application
Appraisers use GRM for quick property valuations, especially for small residential rental properties and preliminary assessments. Investors use it to rapidly compare rental property deals, though it should be supplemented with cap rate analysis and detailed income/expense review for final decisions.
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