The Complete ARV Guide for Real Estate Investors

What Is After-Repair Value?

After-repair value (ARV) is the estimated market value of a property after all planned renovations and repairs are completed. It is the single most important number in a fix-and-flip analysis and a critical input for BRRR (buy, rehab, rent, refinance) strategy. If your ARV is wrong, every other calculation downstream — profit margin, maximum purchase price, loan-to-value ratio — is wrong too.

Why ARV Is Different from Current Market Value

Current market value reflects what a property is worth right now, in its present condition. ARV reflects what the property will be worth after renovations are complete. The difference between the two is where the investor's profit potential lives — but also where the risk lives.

Estimating ARV requires you to find comparable sales that represent the finished condition of the property, not its current condition. This is a subtle but critical distinction. If you are buying a property that needs a full kitchen and bathroom renovation, your comps should be recently sold properties in the same area that already have updated kitchens and bathrooms. Comparing your future renovated property to other unrenovated properties will give you a distorted picture.

How to Calculate ARV Using Comps

Step 1: Define the Finished Product

Before searching for comps, you need a clear picture of what the property will look like after rehab. What is the planned scope of work? Are you doing a cosmetic refresh or a full gut renovation? Will you be adding square footage, bedrooms, or bathrooms? The answers to these questions determine what kind of comps you need to find.

Step 2: Search for Comparable Sales

Look for properties that match the finished version of your subject. Key criteria include the same property type (single family, duplex, etc.), similar size in terms of gross living area, same neighborhood or comparable location, similar age and construction style, comparable condition and finish level, and sold within the last six months if possible.

Step 3: Apply Adjustments

No comp will be a perfect match. Apply adjustments for differences in square footage, lot size, bedrooms, bathrooms, garage, basement, and any other material feature. Use market-derived adjustment values whenever possible rather than guessing.

Step 4: Reconcile to a Value Range

After adjusting your comps, you should have a range of indicated values. The ARV is typically expressed as a range rather than a single point estimate because there is inherent uncertainty in projecting a future sale price. A tighter range indicates more confidence; a wide range suggests you may need better comps or more market research.

The 70 Percent Rule

Many investors use the 70 percent rule as a quick screen: your maximum purchase price should not exceed 70 percent of ARV minus estimated repair costs. For example, if ARV is $400,000 and repairs will cost $60,000, the maximum purchase price is ($400,000 x 0.70) minus $60,000, which equals $220,000.

The 70 percent rule is a useful starting point, but it is not a substitute for detailed analysis. In competitive markets, investors often pay more than the 70 percent rule suggests. In distressed markets or for properties with significant risk, a more conservative threshold may be appropriate.

Common ARV Mistakes

The most frequent ARV errors investors make include using comps that reflect the property's current condition rather than its post-renovation condition, overestimating the value that renovations will add without market support, ignoring market trends and assuming that values will remain stable throughout the rehab period, cherry-picking the highest comps to justify a purchase price rather than letting the data guide the conclusion, and failing to account for holding costs, selling costs, and financing costs that reduce actual profit.

How Comp Pro Helps Investors

Comp Pro is designed to make the ARV calculation process faster and more reliable. The platform lets you search for comps based on the finished characteristics of your subject property, scores each comp for similarity, and generates adjustment suggestions so you can quickly arrive at a supportable value range. The confidence score and narrative explanation help you assess whether your comps are strong enough to base a deal on — before you commit capital.