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What After Repair Value Means in Real Estate Investing
After repair value, almost always abbreviated as ARV, is the estimated market value of a property after all planned renovations are completed and the home is ready for resale or refinance. It is the single most important number in any fix-and-flip or BRRRR deal because it defines the revenue ceiling for the entire project. The after repair value calculator above is designed to translate raw comparable sales data into a defensible ARV estimate in under a minute, then convert that ARV into a maximum allowable offer that protects your profit margin. Every other input in a flip underwriting model (purchase price, rehab budget, holding costs, financing costs) anchors back to ARV, which is why getting the after repair value right is the highest-leverage activity in deal analysis.
Professional real estate investors typically build their ARV from three to four comparable sold properties (called comps) within a half-mile radius of the subject that sold in the past 90 to 180 days. Each comp is adjusted for differences in square footage, condition, bedroom count, bathroom count, lot size, and finish quality. The after repair value calculator on this page focuses on the two largest drivers, price per square foot and condition, because in most residential markets these two variables explain 70 to 80 percent of the price variation across nearby comparable sales. For a more rigorous condition-adjusted comp analysis, our house flip profit calculator uses ARV as a key input and lets you stress-test the deal across multiple ARV scenarios.
How to Estimate ARV from Comparable Sales
The standard approach to estimating ARV is the comparable sales method, also called the sales comparison approach in formal appraisal terminology. Start by pulling recently closed sales of fully renovated properties within half a mile of your subject from the MLS through a licensed agent. Filter for properties with similar bedroom and bathroom counts, similar square footage (within 20 percent), and similar lot size. Exclude distressed sales, foreclosures, and family transfers. These transactions do not reflect open-market value and will skew your ARV downward.
For each qualifying comp, divide the sale price by the comp’s living area square footage to get the price per square foot. This is the most important number in the analysis. Then adjust each comp’s price per square foot for condition relative to your projected post-renovation subject. A comp in much better condition than your planned renovation should be adjusted down by roughly 10 percent; a comp in worse condition should be adjusted up. The BiggerPockets guide to calculating ARV recommends starting with the median price per square foot across your comps and only using the high or low ends when the subject is unambiguously above- or below-average for the neighborhood. Multiply the adjusted weighted-average price per square foot by your subject’s square footage to produce the estimated ARV.
The Investopedia explanation of after repair value emphasizes that ARV is fundamentally an opinion of value rather than a precise number, which is why most professional investors model their underwriting at three ARV scenarios: base case, minus 5 percent, and minus 10 percent. If the deal only survives at the base-case ARV, the margin of safety is too thin.
The 70% Rule for Fix and Flips Explained
The 70% rule is the most widely taught shortcut in the fix-and-flip world. It says your maximum purchase price should not exceed 70% of ARV minus the rehab budget. For a property with a 300,000 dollar ARV and 40,000 dollars in rehab costs, the 70% rule sets the maximum offer at 170,000 dollars. The 30 percent cushion between the 70% multiplier and the full ARV is intended to cover acquisition closing costs, hard money loan points and interest, monthly holding costs, selling agent commissions and seller closing costs, and a meaningful profit margin, typically 15 to 20 percent of ARV.
The 70% rule works best in mid-priced markets with moderate holding costs and standard agent commissions. In low-priced markets where fixed costs (like inspections and title fees) consume a disproportionate share of the deal, investors often tighten to a 65% rule. In high-priced coastal markets with compressed margins, some experienced investors stretch to a 75% rule, but this requires exceptional confidence in ARV and rehab estimates. The after repair value calculator above gives you both the 70% rule MAO and a detailed alternative that lets you specify your own margin and cost percentages. If your detailed MAO comes in well below the 70% rule MAO, your actual cost structure exceeds the bundled assumption in the shortcut and you should trust the detailed number.
Hard money lenders explicitly underwrite to ARV, typically capping loans at 70 to 75 percent of ARV. Our hard money loan calculator lets you model the exact loan amount, points, and interest cost given your ARV input, so you can stack the borrowing constraints alongside the 70% rule constraint to find the binding maximum offer for your specific deal.
ARV in the BRRRR Strategy
The BRRRR strategy (Buy, Rehab, Rent, Refinance, Repeat) depends even more heavily on accurate ARV than a traditional flip because the after repair value drives the cash-out refinance loan amount that recycles your capital. Most refinance lenders cap cash-out loans at 70 to 75 percent of ARV. If your total all-in cost (purchase plus rehab plus carrying) is at or below 70 percent of ARV, you can extract all of your invested capital at refinance and own the rental property with zero or negative cash invested. This is what BRRRR investors mean by an “infinite return” deal.
For example, if you buy a property for 120,000 dollars, spend 40,000 dollars on rehab and 10,000 dollars on carrying costs (170,000 dollars all-in), and the ARV comes in at 250,000 dollars, a 70 percent cash-out refinance generates a 175,000 dollar loan; enough to pay off the original financing and return your full 170,000 dollar capital with 5,000 dollars to spare. Our BRRRR calculator uses ARV as a primary input and computes the post-refinance cash invested, monthly cash flow, and return on remaining capital so you can evaluate the full BRRRR cycle end to end. The single biggest risk in BRRRR is an ARV that comes in below expectation at refinance appraisal, which leaves capital trapped in the deal. Run the after repair value calculator above with conservative comps to avoid that scenario.
Common ARV Mistakes and How to Avoid Them
The most expensive ARV mistakes are systematic, not random. They tend to overstate ARV in predictable ways. The first mistake is using stale comps. In a moving market, comps older than 90 days can misrepresent current value by 5 to 10 percent in either direction. Always sort your comp list by sale date and weight recent sales more heavily, as the after repair value calculator above does automatically. The second mistake is using comps outside the subject’s true submarket. School district boundaries, flood zones, and HOA boundaries can produce 10 to 20 percent price differences within just a few blocks, so always verify each comp shares the subject’s submarket characteristics.
The third mistake is failing to adjust for condition. Even within a single neighborhood, fully renovated homes can sell for 15 to 25 percent more per square foot than dated homes in similar floor plans. If your comp set mixes renovated and dated properties without adjustment, your ARV will be biased toward the median of the mix rather than the renovated comp it should resemble after the project is complete. The HUD 203(k) rehabilitation loan guidelines underscore the same point from a lender's perspective: appraisers financing a renovation loan must document condition-adjusted comparables, and condition-adjusted price differences within a single submarket can routinely exceed 20 percent, which is far more than most rough comp analyses account for.
The fourth mistake is anchoring on automated valuation models like the Zillow Zestimate or Redfin Estimate. These models are calibrated against the broader housing stock, not the specific subset of renovated flips, and they systematically understate the value of well-renovated homes by 5 to 10 percent. Use them as a sanity check, never as the primary ARV source. The fifth mistake is over-trusting the listing agent’s pro-forma ARV when buying from a wholesaler. These numbers are marketing-driven and often optimistic by 5 to 15 percent. For a complete view of the real estate calculators available on Quant Calculators, including cap rate, cash flow, and rental property tools, visit the real estate hub.