Table of Contents

  1. Introduction
  2. Core Concepts: Understanding the GRM
  3. Step-by-Step Framework: Applying the GRM
  4. Comparison Table: GRM vs. Other Metrics
  5. Case Study: GRM in Action
  6. Advanced Strategies for GRM Use
  7. Common Mistakes to Avoid with GRM
  8. 2025 Market Trends and GRM
  9. Frequently Asked Questions
  10. Conclusion

Introduction

In the competitive real estate market of 2025, where properties can be listed and under contract within days, speed and efficiency in your initial property screening are paramount. According to recent industry data, investors who can quickly identify promising deals often secure properties at a 5-10% better price than those who deliberate. This rapid assessment is precisely where the Gross Rent Multiplier (GRM) shines, offering a powerful, yet simple, metric to filter potential investment properties.

You're likely juggling multiple listings, trying to discern which ones warrant a deeper dive. The GRM provides a crucial first pass, helping you eliminate properties that are clearly overpriced relative to their rental income potential, saving you invaluable time and effort. It's not a standalone decision-maker, but rather an essential gatekeeper in your investment process.

By the end of this comprehensive guide, you will understand the GRM's calculation, its practical application in real-world scenarios, and how to integrate it into your investment strategy for 2025. You'll learn its strengths and weaknesses, discover advanced techniques, and gain insights into avoiding common pitfalls, ultimately empowering you to make faster, smarter investment decisions.

Core Concepts: Understanding the GRM

The Gross Rent Multiplier (GRM) is a straightforward valuation metric used primarily for residential income properties (like single-family homes, duplexes, triplexes, and small apartment buildings) to estimate how many years it would take for the property's gross rental income to equal its purchase price. It's a quick way to compare properties based on their income-generating potential relative to their cost, without getting bogged down in operating expenses, vacancies, or financing details.

Key Formula or Metric: Calculating the GRM

The formula for the Gross Rent Multiplier is elegantly simple:

Gross Rent Multiplier (GRM) = Property Purchase Price / Gross Annual Rental Income

Let's walk through an example:

Imagine you're evaluating a duplex listed for $300,000. Unit A rents for $1,500 per month. Unit B rents for $1,400 per month.

  1. Calculate Gross Monthly Rental Income: $1,500 + $1,400 = $2,900
  2. Calculate Gross Annual Rental Income: $2,900/month * 12 months = $34,800
  3. Apply the GRM Formula: $300,000 (Purchase Price) / $34,800 (Gross Annual Rental Income) = 8.62 GRM

This means it would take approximately 8.62 years of gross rental income to recover the initial purchase price of $300,000, assuming 100% occupancy and no expenses.

Why This Matters: Practical Impact on Investor Returns

The GRM matters because it provides a rapid, initial gauge of a property's income-generating efficiency relative to its cost. A lower GRM suggests that you are paying less for each dollar of gross rent, which can indicate a potentially more profitable investment. For instance, if you compare two identical properties, one with a GRM of 7 and another with a GRM of 10, the property with the GRM of 7 is generally considered a better deal on a gross income basis.

This metric is particularly useful for investors who need to quickly sift through dozens of listings to identify the most promising candidates for further due diligence. It helps you prioritize your time, ensuring you only spend detailed analysis hours on properties that pass this initial financial hurdle. While it doesn't account for expenses, a high GRM can often be a red flag, signaling that the property might be overpriced or have insufficient rental income to justify its cost, even before considering operating costs.

Common Misconceptions About the GRM

  1. "GRM is the only metric I need." This is perhaps the most dangerous misconception. The GRM is a screening tool, not a comprehensive valuation. It completely ignores crucial factors like operating expenses (taxes, insurance, maintenance, utilities), vacancy rates, and debt service. A property with a low GRM might still be a poor investment if its operating expenses are extraordinarily high.
  2. "A low GRM always means a good deal." While a lower GRM is generally preferable, it's relative. What constitutes a "good" GRM varies significantly by market, property type, and even neighborhood. A GRM of 7 might be excellent in one city but average in another. You must compare properties within the same market and asset class.
  3. "GRM applies to all property types." The GRM is best suited for residential properties (1-4 units) where gross income is a relatively stable and predictable figure, and operating expenses tend to be a more consistent percentage of that income. It's less effective for commercial properties or larger multifamily assets where operating expenses are more complex and varied, and metrics like the Capitalization Rate (Cap Rate) are more appropriate.

Step-by-Step Framework: Applying the GRM

The Gross Rent Multiplier (GRM) is a powerful initial screening tool. Here's a 7-step framework to effectively integrate it into your investment analysis process.

Step 1 of 7: Define Your Target GRM Range Before you even look at properties, establish what constitutes an acceptable GRM in your target market. This isn't a universal number; it varies significantly based on location, property type (e.g., single-family vs. duplex), and current market conditions. Research recent sales of comparable income properties in your desired neighborhood. Look at their purchase price and their actual or estimated gross annual rents. Calculate the GRM for these sold properties to establish a baseline. For example, in a specific suburban market for duplexes, you might find that successful investments typically have GRMs between 7 and 10. This range becomes your first filter. Without this benchmark, a calculated GRM is just a number.

Step 2 of 7: Accurately Determine Gross Annual Rental Income This is the numerator in your GRM calculation and must be as accurate as possible. For properties currently rented, obtain the actual lease agreements to verify current monthly rents. Don't rely solely on listing agent claims. For vacant units or properties where you believe rents are below market, research comparable rental listings in the immediate area. Look for properties with similar bedroom counts, amenities, and condition that have recently rented. Use the average of these comparable rents to project a realistic market rent for your subject property. Multiply the total monthly gross rent (actual or projected) by 12 to get the gross annual rental income. Be conservative; overestimating rent will artificially lower your GRM, leading to a potentially misleadingly attractive number.

Step 3 of 7: Identify the Property's Purchase Price The purchase price is the other key component of the GRM formula. This is typically the listed price of the property. If you are considering making an offer below the asking price, use your proposed offer price for the calculation. Remember that the "purchase price" should ideally include any immediate, significant acquisition costs that are effectively part of the capital outlay, such as major closing costs if you want a more precise initial capital comparison, though for a quick screen, the list price is usually sufficient. Be sure to use the full price, not just your down payment, as the GRM evaluates the entire asset's value against its income.

Step 4 of 7: Calculate the Gross Rent Multiplier (GRM) With your gross annual rental income and purchase price established, apply the formula: GRM = Property Purchase Price / Gross Annual Rental Income. For example, if a property is listed at $450,000 and has a verified gross annual rental income of $54,000, your GRM would be $450,000 / $54,000 = 8.33. This calculation should be done quickly for every property you screen. Use a simple spreadsheet or a calculator on your phone. The goal here is speed and consistency across all properties you're evaluating.

Step 5 of 7: Compare the Calculated GRM to Your Target Range Once you have the GRM for a specific property, compare it against the target GRM range you defined in Step 1. If the property's GRM falls within or below your acceptable range, it passes this initial screening filter and warrants further investigation. If the GRM is significantly higher than your target range, it's likely overpriced relative to its income potential in that market, and you can generally discard it from your immediate consideration, saving you time. This step is where the GRM truly acts as a "quick filter."

Step 6 of 7: Consider Market Nuances and Property Specifics While the GRM is a quick filter, it's not blind. Even if a property passes the GRM test, consider qualitative factors. Is the property in a rapidly appreciating neighborhood where future rent growth might justify a slightly higher GRM? Does it have unique features or amenities that command premium rents? Conversely, does it have significant deferred maintenance that will eat into profits, making even a low GRM less attractive? These nuances help refine your initial GRM assessment. For instance, a property in a highly desirable school district might command a slightly higher GRM due to its inherent value and stability.

Step 7 of 7: Move to Deeper Analysis for Qualified Properties Only properties that pass the GRM screen should proceed to the next stage of your due diligence. This involves a more comprehensive financial analysis, including calculating the Capitalization Rate (Cap Rate), Cash-on-Cash Return, and Net Operating Income (NOI). At this stage, you'll meticulously account for all operating expenses (property taxes, insurance, maintenance, repairs, property management fees, vacancy rates, utilities, etc.) and factor in financing costs. The GRM simply gets you to the starting line for this deeper dive; it doesn't run the whole race. Use our free Deal Analyzer to perform these more detailed calculations efficiently.

Comparison Table: GRM vs. Other Metrics

Understanding how the Gross Rent Multiplier (GRM) stacks up against other common real estate investment metrics is crucial for a well-rounded analysis. Each metric serves a different purpose and provides unique insights.

Factor Gross Rent Multiplier (GRM) Capitalization Rate (Cap Rate) Cash-on-Cash Return (CoC) Return on Investment (ROI)
Formula Purchase Price / Gross Annual Rent Net Operating Income (NOI) / Purchase Price Annual Pre-Tax Cash Flow / Total Cash Invested (Gain from Investment - Cost of Investment) / Cost of Investment
Primary Use Quick initial screening, pre-filter Valuation for income properties, compares profitability Measures annual return on actual cash invested Broad measure of overall profitability over time
Considers Expenses? No (Ignores all operating expenses) Yes (Accounts for all operating expenses) Yes (Accounts for operating expenses & debt service) Yes (Accounts for all costs & gains)
Considers Debt? No No Yes (Crucial for leveraged deals) Yes (Depends on calculation method)
Speed of Calculation Very Fast Fast Moderate Moderate to Slow
Best For Initial screening of 1-4 unit residential Commercial & larger multifamily, comparing similar properties Individual investor's actual cash flow performance Overall project profitability, long-term perspective
Key Insight How many years of gross rent to recover price Property's unleveraged rate of return Annual percentage return on out-of-pocket cash Total percentage return on investment
Typical Range (Example) 7-12 (residential) 4-10% (commercial/multifamily) 8-20%+ (highly variable) 10-30%+ (highly variable)

Case Study: GRM in Action

Let's examine how a savvy investor uses the GRM to quickly filter properties and secure a profitable deal.

Investor Profile: Sarah, a seasoned real estate investor with a portfolio of 5 single-family rentals, is looking to acquire her sixth property in a rapidly growing mid-sized city in the Midwest. Her goal is to find a property that offers strong cash flow and potential for appreciation. She has a target GRM range of 8-10 for properties in this market, based on her past successful acquisitions and local market research.

Before: Sarah identifies three potential properties listed in her target neighborhood:

  • Property A: A 3-bedroom, 2-bath house listed for $280,000. Current tenants pay $2,100/month.
    • Gross Annual Rent: $2,100 * 12 = $25,200
    • GRM: $280,000 / $25,200 = 11.11
  • Property B: A 3-bedroom, 2.5-bath house listed for $310,000. Market rent for similar properties is $2,700/month (currently vacant).
    • Gross Annual Rent: $2,700 * 12 = $32,400
    • GRM: $310,000 / $32,400 = 9.57
  • Property C: A 4-bedroom, 2-bath house listed for $350,000. Current tenants pay $2,500/month.
    • Gross Annual Rent: $2,500 * 12 = $30,000
    • GRM: $350,000 / $30,000 = 11.67

Based on her target GRM range of 8-10, Sarah immediately filters out Property A and Property C as their GRMs are too high, suggesting they are overpriced relative to their gross income potential in this market. Property B, with a GRM of 9.57, falls within her acceptable range and warrants further investigation.

After: Sarah proceeds with a detailed analysis of Property B. She discovers the following:

  • Purchase Price: $310,000
  • Financing: 20% down payment ($62,000), 30-year fixed mortgage at 7.0% interest.
  • Annual Operating Expenses:
    • Property Taxes: $3,800
    • Insurance: $1,200
    • Maintenance (estimated 10% of gross rent): $3,240
    • Property Management (estimated 8% of gross rent): $2,592
    • Vacancy (estimated 5% of gross rent): $1,620
    • Total Annual Expenses: $3,800 + $1,200 + $3,240 + $2,592 + $1,620 = $12,452
  • Gross Annual Rental Income: $32,400

Now, Sarah calculates the Net Operating Income (NOI), Cash Flow, and Cash-on-Cash Return:

  • NOI: $32,400 (Gross Annual Rent) - $12,452 (Total Annual Expenses) = $19,948
  • Annual Mortgage Payment: Principal & Interest (P&I) on $248,000 loan at 7.0% for 30 years is approximately $1,650/month * 12 = $19,800
  • Annual Pre-Tax Cash Flow: $19,948 (NOI) - $19,800 (Annual Mortgage Payment) = $148
  • Total Cash Invested: $62,000 (Down Payment) + $8,000 (Closing Costs) = $70,000
  • Cash-on-Cash Return: ($148 / $70,000) * 100% = 0.21%

Upon deeper analysis, even though Property B passed the initial GRM screen, Sarah realizes the cash flow is extremely tight, resulting in a very low Cash-on-Cash return. The GRM indicated it was potentially a good deal, but the detailed expense analysis revealed it was not. She decides to pass on Property B and continue her search, saving herself from a low-performing investment.

Key Lesson: The GRM is an excellent initial filter to quickly narrow down options, but it is never a substitute for a thorough financial analysis that includes all operating expenses, vacancy, and debt service. It helps you avoid wasting time on clearly overpriced properties, allowing you to focus your detailed due diligence on those that meet your preliminary criteria.

📚 Recommended Resource: The Book on Rental Property Investing Brandon Turner's definitive guide to building wealth through rental properties. ($16–24)

Advanced Strategies for GRM Use

While the GRM is a simple metric, experienced investors leverage it with greater sophistication. These advanced strategies help refine its application and extract more nuanced insights.

Advanced Subsection 1: Calibrating GRM for Market Cycles and Growth

Savvy investors don't just use a static GRM range; they calibrate it based on market conditions and future growth projections. In a rapidly appreciating market, you might tolerate a slightly higher GRM if you anticipate significant rent growth or property value appreciation in the near future. Conversely, in a stagnant or declining market, you'd demand a lower GRM for a property to be considered attractive, prioritizing immediate cash flow and safety. For example, in a high-growth tech hub, a GRM of 12 might be acceptable due to projected 5-7% annual rent increases, whereas in a stable, mature market, anything above 9 might be considered too high. This requires a deep understanding of local economic indicators, job growth, and population trends. You're essentially using the GRM as a baseline but adjusting your acceptable threshold based on the market's momentum.

Advanced Subsection 2: Blended GRM and Value-Add Opportunities

For properties with mixed-use components (e.g., residential units above a commercial storefront) or those with clear value-add potential, a "blended GRM" approach can be useful. Instead of just using current rents, an advanced investor will calculate two GRMs: one based on current gross rents and another based on pro-forma (projected) gross rents after implementing improvements or increasing rents to market rates. For instance, if a multi-unit property has below-market rents due to poor management, you'd calculate the GRM based on current rents (likely high) and then calculate a potential GRM based on what market rents should be after renovations or rent increases. This helps you identify properties that appear unattractive on the surface but offer significant upside. A property with a current GRM of 13 might be a pass, but if you can raise rents by 25% through minor renovations, bringing the pro-forma GRM down to 10.4, it becomes a strong contender.

Common Mistakes to Avoid with GRM

While the Gross Rent Multiplier is a powerful screening tool, misusing it can lead to costly investment errors. Here are five common mistakes and how to avoid them:

✅ Mistake 1: Relying Solely on GRM for Investment Decisions — The biggest pitfall is treating GRM as the ultimate decision-maker. It's a gross metric, meaning it ignores all operating expenses (property taxes, insurance, maintenance, vacancies, property management, etc.) and debt service. A property with a low GRM might still be a terrible investment if its expenses are exceptionally high.

  • How to Avoid: Always follow up a positive GRM screen with a detailed financial analysis, including Net Operating Income (NOI), Cap Rate, and Cash-on-Cash Return. Use a comprehensive deal analyzer to account for all costs.

✅ Mistake 2: Comparing GRMs Across Different Markets or Property Types — A "good" GRM is highly market-specific and property-type specific. A GRM of 7 might be excellent for a single-family home in a low-cost, high-rent area, but alarmingly high for a luxury condo in a high-cost, low-rent-yield city. Similarly, comparing a duplex GRM to a large apartment complex's GRM is inappropriate.

  • How to Avoid: Only compare GRMs of similar properties (e.g., 2-4 unit residential) within the same or very similar submarkets. Establish a target GRM range based on recent comparable sales in your specific investment area.

✅ Mistake 3: Using Unrealistic Gross Rental Income Figures — Investors sometimes inflate projected rental income to make a property's GRM appear more attractive. This could be due to relying on outdated rent rolls, ignoring vacancy rates, or overestimating market rents for vacant units.

  • How to Avoid: Always verify rental income. For occupied units, request current leases. For vacant units or units with below-market rents, conduct thorough market research using platforms like Rentometer, Zillow, or local property managers to determine realistic, achievable market rents. Factor in a reasonable vacancy rate (e.g., 5-10%) even for a "gross" calculation if you're trying to be more conservative.

✅ Mistake 4: Ignoring Potential for Value-Add or Deferred Maintenance — The GRM is a snapshot. It doesn't tell you if a property has significant deferred maintenance that will require substantial capital expenditure, effectively increasing your true "purchase price." Conversely, it also doesn't highlight opportunities to significantly increase rents through renovations, which would lower your effective GRM.

  • How to Avoid: Use the GRM for initial screening, but always follow up with a physical inspection and a thorough assessment of the property's condition. Factor in renovation costs into your overall investment cost for a more accurate picture, or consider how value-add improvements could impact future gross rents.

✅ Mistake 5: Not Understanding the "Why" Behind a High or Low GRM — A high GRM isn't always bad, and a low GRM isn't always good. A high GRM might indicate a property in a rapidly appreciating area where investors are willing to pay a premium for future growth, even if current cash flow is tight. A very low GRM might signal hidden problems, such as a property in a declining neighborhood or one with significant structural issues.

  • How to Avoid: Investigate the underlying reasons. If a GRM is an outlier (either very high or very low), ask "why?" Is there a unique market dynamic, a hidden problem, or an overlooked opportunity? This critical thinking helps you avoid blindly accepting or rejecting properties based solely on this single number.

As we navigate the real estate landscape of 2025, several market trends significantly impact how investors should interpret and utilize the Gross Rent Multiplier. Understanding these dynamics is crucial for making informed decisions.

Interest Rate Environment: The Federal Reserve's actions on interest rates continue to be a dominant factor. In 2024, we saw rates fluctuate, and while predictions for 2025 vary, a sustained period of higher interest rates (e.g., 6.5% to 8.0% for investment property mortgages) will generally push GRMs higher. Why? Because higher borrowing costs reduce an investor's ability to pay as much for a property while maintaining desired cash flow. This means that for a given rental income, the purchase price must be lower to achieve a similar return, resulting in a lower GRM. Conversely, if rates soften, investors might tolerate slightly higher GRMs. As an investor, you should adjust your target GRM downwards in a higher-rate environment to maintain your cash flow targets.

Inflation and Rent Growth: Inflationary pressures, while hopefully moderating, are still a consideration. Historically, real estate has been a strong hedge against inflation, as property values and rents tend to rise over time. In 2025, markets experiencing strong job growth and limited housing supply may see continued robust rent growth (e.g., 4-6% annually). This potential for future rent increases can justify a slightly higher GRM today, as the denominator (gross annual rent) is expected to grow, effectively lowering your GRM over time. Investors should focus on markets with strong economic fundamentals that support sustainable rent appreciation.

Regional Variations and Migration Patterns: The "work-from-anywhere" trend, though matured, continues to drive migration patterns, creating winners and losers among regional markets. Cities in the Sun Belt and Mountain West, for example, have seen significant population influxes, leading to strong rental demand and property value appreciation. In these high-demand markets, you might observe higher GRMs (e.g., 10-12) because investors are paying a premium for growth potential and a lower risk of vacancy. Conversely, in stagnant or declining population centers, GRMs might be lower (e.g., 6-8) to compensate for slower appreciation and higher vacancy risk. Always calibrate your target GRM to the specific regional market you are evaluating.

Supply Chain and Construction Costs: Ongoing challenges in global supply chains and persistent labor shortages continue to keep construction costs elevated. This impacts the cost of new builds and the expense of renovations for existing properties. For investors looking at value-add opportunities, higher renovation costs mean that the "true" purchase price (including capital expenditures) is higher, which can push up the effective GRM. This trend emphasizes the importance of accurate renovation budgeting and careful due diligence on property condition.

Impact on Investor Strategy: In 2025, investors should use GRM as a more dynamic tool. Don't just look for the lowest GRM; consider the context. A slightly higher GRM in a high-growth market with strong rent appreciation potential might be a better long-term bet than a lower GRM in a stagnant market. However, with higher interest rates, maintaining a disciplined GRM target is more critical than ever to ensure positive cash flow. Leverage data from local economic development agencies, real estate boards, and demographic reports to inform your GRM analysis.

📚 Recommended Resource: The Book on Flipping Houses J Scott's step-by-step guide to profitable house flipping. ($14–22)

This article contains Amazon affiliate links. If you purchase through them, Real Estate Investment Insights earns a small commission at no extra cost to you.

Further Reading: For more real estate investing strategies, explore our guides on Single Family vs Multi-Family Investing: The Complete Guide to Choosing Your Portfolio's Path and How to Calculate Cap Rate: The Investor's Definitive 2026 Guide to Property Valuation.

Frequently Asked Questions

Q: What is a good Gross Rent Multiplier (GRM) for an investment property? A: There isn't a universally "good" GRM; it's highly dependent on the specific market, property type, and economic conditions. Generally, a GRM between 7 and 12 is often considered acceptable for residential properties (1-4 units) in many stable markets. However, in high-cost, high-appreciation markets, a GRM of 15 or even higher might be common, while in lower-cost, high-cash-flow markets, you might target a GRM of 5-8. Always compare to similar properties in your target area.

Q: How is GRM different from the Capitalization Rate (Cap Rate)? A: The GRM (Gross Rent Multiplier) is calculated using gross annual rental income, ignoring all operating expenses. The Cap Rate (Capitalization Rate) is a more comprehensive metric that uses Net Operating Income (NOI), which is gross income minus all operating expenses (taxes, insurance, maintenance, etc.). GRM is a quick screening tool, while Cap Rate provides a better measure of a property's unleveraged profitability.

Q: Can GRM be used for commercial properties? A: While you can calculate a GRM for commercial properties, it's generally not recommended as a primary screening tool. Commercial properties have highly variable and often complex operating expenses, making the "gross" income figure less reliable for comparison. The Capitalization Rate (Cap Rate) is the preferred metric for commercial real estate as it accounts for these crucial expenses.

Q: Does GRM account for property taxes and insurance? A: No, the Gross Rent Multiplier (GRM) does not account for property taxes, insurance, or any other operating expenses. It only considers the property's purchase price and its total gross annual rental income before any deductions. This is why it's considered a "gross" multiplier and should only be used for initial screening.

Q: How do I find the gross annual rent for a property? A: For an occupied property, you'd typically request the current lease agreements to verify the monthly rent and then multiply by 12. For vacant properties or to assess market rents, you'll need to research comparable rental listings in the immediate area, factoring in property size, amenities, and condition, then project a realistic monthly rent and multiply by 12.

Q: Should I use actual or projected rent for GRM calculation? A: For the most accurate initial screen, use actual, verified rent if the property is occupied. If it's vacant or you believe current rents are below market, use a well-researched, conservative estimate of market rent. Be cautious not to inflate projected rents, as this will artificially lower the GRM and make a less attractive property seem better than it is.

Q: What are the limitations of using GRM? A: The primary limitations of GRM are its exclusion of all operating expenses (taxes, insurance, maintenance, vacancies, property management) and debt service. It doesn't provide insight into cash flow, profitability after expenses, or return on actual cash invested. It's a quick filter, not a complete financial analysis.

Q: When is GRM most useful in the investment process? A: The GRM is most useful at the very beginning of your investment process, when you are sifting through numerous listings to identify properties that warrant further, more detailed analysis. It allows you to quickly eliminate obviously overpriced properties relative to their gross income potential, saving you significant time and effort.

Conclusion

The Gross Rent Multiplier (GRM) stands as an indispensable initial screening tool for real estate investors in 2025, offering a rapid, straightforward method to filter potential income properties. You've learned that a GRM of 7-12 is often a target range for residential properties, but this number is dynamic and must be calibrated to your specific market and property type. Crucially, while a low GRM can signal a potentially attractive deal, it never replaces a comprehensive financial analysis that accounts for all operating expenses and debt.

Your next step is to integrate the GRM into your investment workflow. Start by researching the average GRM for recently sold comparable properties in your target market to establish your own benchmark. Then, as you browse listings, quickly calculate the GRM for each property, using verified or conservatively projected gross annual rents. This simple calculation will empower you to efficiently narrow down your options, focusing your valuable time and resources on the properties that truly warrant a deeper dive.

Further Reading:

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Field notes (what the outline usually skips)

GRM ignores expenses, which is the entire joke in a high-insurance ZIP. Use it to sort a list of 40 addresses, then throw it away. Two houses with the same GRM can differ by $400/month once taxes and HOA show up. Replace GRM with the expense-stack worksheet before you talk price.

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