Every real estate investment decision starts with the same question: what will this property be worth after it is fixed up?
That number is the After Repair Value, or ARV. It is not a guess. It is not what Zillow says. It is a calculated estimate based on comparable sales data, and it is the single most important number in any deal you will ever underwrite.
Get the ARV wrong and everything downstream breaks. Your maximum offer price is wrong. Your rehab budget math is wrong. Your profit projection is fiction. Investors who skip this step or eyeball it lose money on deals that looked good on paper.
This guide walks through the ARV calculation from scratch, shows you exactly how to pull and analyze comps, and connects ARV to the 70% rule so you can move from "what is it worth?" to "what should I pay?" in the same sitting.
What Is ARV and Why Does It Matter?
ARV stands for After Repair Value. It is the estimated market value of a property after all planned renovations are complete. Not the value today. Not the value in its current condition. The value it would sell for on the open market once the work is done.
The National Association of Realtors publishes data showing that the median existing home sale price in the U.S. Hit $396,900 in early 2026. But that national number is meaningless for your deal. ARV is hyper-local. A three-bedroom ranch in San Antonio's Eastside after a full rehab is a completely different number than the same house type in Dallas's Oak Cliff or Charlotte's Westside.
ARV matters because it anchors three critical calculations:
1. Maximum purchase price — what you can afford to pay and still make money
2. Rehab budget ceiling — how much you can spend on repairs without eating your margin
3. Exit strategy viability — whether you flip, rent, or BRRRR, ARV determines if the deal works
Without a solid ARV, you are gambling. With one, you are underwriting.
The ARV Formula
The formula itself is straightforward:
ARV = Comparable Sales Price (adjusted for differences)
That is it. ARV is not a formula you plug numbers into and get a magic answer. It is a research process. You are finding properties similar to what yours will look like after renovation and using their sold prices to estimate what yours will sell for.
Here is the step-by-step process.
Step 1: Define Your Property's "After" Condition
Before you search for comps, you need to know what your property will be when the rehab is done. Be specific:
- Bed/bath count (will you add a bedroom or bathroom?)
- Square footage (any additions planned?)
- Finish level (builder grade, mid-range, or high-end?)
- Major systems (new roof, new HVAC, updated electrical?)
- Cosmetic scope (paint and carpet, or full gut renovation?)
A property getting a $15,000 cosmetic refresh is going to comp differently than one getting a $65,000 full renovation. Define the scope before you start pulling data.
Step 2: Pull Comparable Sales
Comps are recently sold properties that are similar to what yours will look like post-renovation. Here is how to find them:
Where to search:
- MLS access through an agent or investor-friendly platform
- Redfin sold listings (free, detailed, updated frequently)
- Zillow recently sold (accessible but less granular than Redfin)
- County appraisal district records for verified sale prices
Comp criteria — the tighter, the better:
| Criteria | Ideal Range |
|---|---|
| Distance from subject | Within 0.5 mile (1 mile max in rural areas) |
| Sale date | Closed within last 90 days (180 days max) |
| Bed/bath count | Same bed count, within 1 bathroom |
| Square footage | Within 15-20% of subject |
| Property type | Same (SFR to SFR, no townhome comps for detached) |
| Condition | Similar post-renovation condition |
| Lot size | Similar (within 20%) |
You want 3 to 5 strong comps. Two is thin. One is dangerous. If you cannot find 3 comps within these parameters, widen the radius or date range slightly, but note the reduced confidence.
Step 3: Adjust for Differences
No two properties are identical. Your comps will differ from your subject property in some ways. The goal is to adjust for those differences to arrive at a more accurate estimate.
Common adjustments:
- Extra bedroom: Add $8,000 to $15,000 depending on market
- Extra bathroom: Add $5,000 to $12,000
- Garage vs. No garage: Add $10,000 to $20,000
- Square footage difference: Adjust $30 to $60 per square foot depending on market
- Pool: Add $5,000 to $15,000 (market dependent — pools add less value in northern climates)
- Lot size premium: Minimal unless significant difference (over 25%)
The Federal Housing Finance Agency publishes the House Price Index which can help contextualize local price movements when your comps span several months.
Example: Your comp sold for $245,000. It has an extra full bathroom compared to your subject. Subtract $8,000. Adjusted comp value: $237,000.
Step 4: Calculate the ARV
Take your 3-5 adjusted comp values and calculate the average. Some investors also look at the median to reduce the impact of outliers.
Worked Example — San Antonio Eastside Property:
Subject property: 3 bed / 1 bath, 1,180 sq ft, built 1962, planned full renovation to mid-range finishes.
| Comp | Address | Sold Price | Adjustments | Adjusted Value |
|---|---|---|---|---|
| 1 | 123 Dawson St (78202) | $218,000 | -$5,000 (extra bath) | $213,000 |
| 2 | 456 Hackberry St (78210) | $225,000 | None needed | $225,000 |
| 3 | 789 Olive St (78202) | $210,000 | +$4,000 (smaller lot) | $214,000 |
| 4 | 321 Pine St (78210) | $232,000 | -$8,000 (garage + bath) | $224,000 |
Average adjusted value: $219,000
Median adjusted value: $219,500
ARV estimate: $219,000
How ARV Connects to the 70% Rule
Once you have the ARV, the next question is: what should I pay?
The 70% rule is the most widely used quick-filter for investment properties. The formula:
Maximum Purchase Price = (ARV × 0.70) —' Estimated Repair Costs
Using our San Antonio example:
- ARV: $219,000
- Estimated repairs: $42,000 (full renovation, mid-range finishes)
- Maximum purchase price: ($219,000 × 0.70) —' $42,000 = $153,300 —' $42,000 = $111,300
That means you should pay no more than roughly $111,000 for this property if you want to maintain healthy margins.
For a deeper dive on how the 70% rule and other underwriting fundamentals work together, see our Real Estate Investing Fundamentals Guide. And if you want to see how ARV fits into the full property underwriting process, check out our guide on How to Underwrite a Rental Property in 10 Minutes.
Why Zillow Zestimates Are Not ARV
This comes up constantly. A seller or new investor pulls up Zillow, sees a Zestimate of $240,000, and assumes that is the ARV.
It is not.
Zestimates are automated valuation models (AVMs) that estimate current market value based on algorithms. They do not account for your specific renovation plans. They do not distinguish between a cosmetic refresh and a full gut job. And their accuracy varies significantly by market.
Zillow's own research acknowledges that Zestimates have a median error rate of around 2-3% for on-market homes and significantly higher for off-market properties. In distressed property markets where Home Pros operates, the gap between Zestimate and actual ARV can be $20,000 to $50,000 or more.
Use Zestimates as a starting point for research. Never use them as your ARV.
Common ARV Mistakes That Cost Investors Money
Using asking prices instead of sold prices. Listing prices are aspirational. Sold prices are real. Only use closed sales for comps.
Comp shopping. Cherry-picking the highest comps to justify a deal you already want to do. If you have to stretch to make the numbers work, the deal does not work.
Ignoring condition differences. A comp that sold for $260,000 after a high-end renovation is not comparable to your mid-range rehab target. Finish level matters enormously.
Using comps that are too old. A sale from 14 months ago in a shifting market is not reliable. Stick to 90 days when possible, 180 days maximum.
Forgetting to verify sale type. Foreclosure sales, short sales, and estate sales often close below market. If your comp was a distressed sale, it may understate the ARV. Conversely, a sale between family members may not reflect market terms.
When to Get a Professional Opinion
For deals over $300,000 ARV or in markets you do not know well, consider ordering a Broker Price Opinion (BPO) or a desktop appraisal. The cost is typically $75 to $150 for a BPO and $200 to $400 for a desktop appraisal. That is cheap insurance on a six-figure investment.
The Appraisal Institute maintains standards and educational resources for real estate valuation if you want to go deeper on appraisal methodology.
ARV for Different Investment Strategies
Fix and flip: ARV determines your sale price target and directly impacts your profit margin. The most ARV-sensitive strategy. See our guide on the Best Neighborhoods for Fix and Flip in San Antonio for market-specific ARV ranges.
BRRRR: ARV determines your refinance value, which dictates how much capital you recover. A $10,000 ARV miss means $7,000 less in refinance proceeds at 70% LTV. Our BRRRR Method Explained guide covers this in detail.
Wholesale: ARV is what you present to your end buyer to justify the assignment fee. Inflated ARVs destroy your reputation with cash buyers. Our Marketplace connects wholesalers with buyers who verify ARV independently.
Buy and hold: ARV matters less day-to-day but affects your equity position and refinancing options. The underwriting focus shifts to cash flow, which we cover in How to Underwrite a Rental Property.
Frequently Asked Questions
What does ARV mean in real estate investing?
ARV stands for After Repair Value. It is the estimated market value of a property after all planned renovations and repairs are completed. Investors use ARV to determine maximum purchase prices, evaluate rehab budgets, and assess whether a deal is profitable before buying.
How do you calculate ARV without hiring an appraiser?
You calculate ARV by finding 3-5 comparable properties that recently sold in similar condition to your planned renovation, adjusting for differences in bedrooms, bathrooms, square footage, and features, then averaging the adjusted values. Free tools like Redfin and Zillow sold listings provide the data. MLS access through an investor-friendly agent gives the most complete picture.
Is ARV the same as the listing price or appraised value?
No. ARV is different from both. A listing price is what a seller hopes to get. An appraised value is what a licensed appraiser determines the property is worth in its current condition. ARV is what the property would sell for after specific renovations are complete. ARV is almost always higher than both current appraised value and purchase price for distressed properties.
How does ARV connect to the 70% rule for fix and flip investors?
The 70% rule states that your maximum purchase price should be no more than 70% of ARV minus estimated repair costs. For example, if ARV is $250,000 and repairs cost $40,000, your maximum offer is ($250,000 × 0.70) —' $40,000 = $135,000. The remaining 30% covers closing costs, holding costs, and profit margin.
Can you use Zillow to estimate ARV on an off-market property?
You can use Zillow as a starting point for research, but Zillow Zestimates should not be your ARV. Zestimates reflect estimated current value, not post-renovation value. For off-market distressed properties, Zestimates can be off by $20,000 or more because the algorithm does not account for your specific renovation scope or the property's actual condition.
How accurate are ARV estimates from Zillow or Redfin?
Automated valuation models from Zillow and Redfin have median error rates of 2-7% for on-market properties and higher for off-market or distressed properties. They are useful for initial screening but should never replace a comp-based ARV analysis using actual sold data with condition adjustments.
Ready to skip the guesswork? Home Pros uses professional ARV analysis on every acquisition across our 48-market footprint. Whether you are looking to sell a property or find below-market investment opportunities, we do the math so you do not have to.
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