After Repair Value (ARV): How to Estimate What a Flip Is Worth

What Is After Repair Value (ARV)?

After repair value is the estimated market value of a property once all planned renovations are finished. It is the most important number in any house flip or BRRRR deal because every other calculation depends on it. Your maximum purchase price, your rehab budget, your profit margin, your refinance amount — all of these flow from the ARV estimate.

Get the ARV right, and the deal works. Get it wrong by 10-15%, and a profitable flip turns into a money-losing disaster.

The concept is simple: you are buying a distressed property today at a discount, spending money to fix it up, and projecting what it will sell for (or appraise at) once the work is done. The gap between your all-in cost and the ARV is where the profit lives.

ARV is not a guess. It is a data-driven estimate based on comparable sales — recently sold homes that match what your property will look like after renovations. The more accurately you identify and adjust comps, the more reliable your ARV becomes. Experienced flippers can estimate ARV within 3-5% of the eventual sale price. Beginners often miss by 10-20%, and that margin of error is what blows up deals.

Whether you are flipping houses, running the BRRRR strategy, or wholesaling, ARV is the number your entire analysis revolves around.

How to Calculate ARV

ARV is calculated by analyzing comparable sales (comps) — properties similar to what yours will be after renovations. The process has three steps: find comps, adjust for differences, and average the results.

Step 1: Find Comparable Sales

Pull 3-5 recently sold properties that meet these criteria:

• Location: Within 0.5 miles of your subject property, ideally in the same neighborhood or subdivision. Expand to 1 mile only if you cannot find enough comps closer.
• Recency: Sold within the last 6 months. In a fast-moving market, prioritize the last 3 months. Comps older than 6 months may not reflect current pricing.
• Size: Within 15-20% of your property’s square footage. A 1,200 sq ft house should be compared to homes between roughly 1,000 and 1,440 sq ft.
• Bedrooms/Bathrooms: Same count, or within one bedroom/bathroom.
• Condition: This is critical — comps must be in renovated condition similar to what yours will be after rehab. Do not use distressed or unrenovated sales as comps. You are projecting what the property will be worth after the work is done. If you plan to sell a house that needs repairs rather than fix it up, the comp approach changes — you would use as-is comps instead.

Where to find comp data: MLS (through your agent), Zillow’s “recently sold” filter, Redfin, Realtor.com, and county assessor records. MLS data is the most complete and accurate. If you do not have MLS access, partner with a real estate agent who invests or works with investors — they can pull comps for you.

Step 2: Adjust for Differences

No two properties are identical. Your comps will differ from your subject property in ways that affect value. You need to adjust each comp up or down to account for those differences.

Common adjustments:

• Square footage: Use the price per square foot from the comp to adjust. If the local rate is $150/sq ft and the comp is 100 sq ft larger than your property, subtract $15,000 from the comp’s sale price.
• Bedrooms: An extra bedroom typically adds $8,000-$20,000 depending on the market.
• Bathrooms: A full bath adds $10,000-$25,000; a half bath adds $5,000-$12,000.
• Garage: A 2-car garage versus none can be a $15,000-$30,000 difference.
• Lot size: Matters more in suburban and rural areas than urban ones.
• Condition/finish level: If a comp has high-end finishes and you plan mid-grade, adjust down.

Step 3: Calculate the Average

After adjustments, average your comp values to arrive at the ARV. Weight the comps that are most similar to your property more heavily. If one comp is three blocks away and very similar, and another is a mile away and needs several adjustments, the closer comp should carry more weight in your estimate.

Example ARV Analysis

You are looking at a 3-bed, 1-bath, 1,100 sq ft ranch in need of a full cosmetic rehab. Here are three comparable sales in the same neighborhood, all renovated and sold within the last 4 months:

Average adjusted value: ($202,500 + $195,000 + $202,500) / 3 = $200,000

Your ARV estimate is $200,000. Comp A and Comp C are the most similar, so you have high confidence in the $200,000-$203,000 range. Comp B required a larger adjustment for the extra bathroom, making it slightly less reliable.

A good ARV analysis should produce results where the adjusted comp values cluster tightly. If your three comps come back at $180,000, $210,000, and $240,000, the spread is too wide — you need better comps or your adjustments are off. A tight cluster (within 5-7% of each other) means your ARV is solid.

ARV and the 70% Rule

The 70% rule is the most common formula for calculating your maximum offer price on a flip. It directly depends on your ARV estimate:

Maximum Offer = ARV x 0.70 – Estimated Repair Costs

Using our $200,000 ARV example, if repairs are estimated at $35,000:

Maximum Offer = $200,000 x 0.70 – $35,000 = $140,000 – $35,000 = $105,000

The 30% margin covers your closing costs (buy and sell side), holding costs, financing costs, and profit. On a $200,000 ARV, that 30% equals $60,000. After $10,000-$15,000 in transaction costs and $5,000-$8,000 in holding costs, you are looking at a gross profit of roughly $37,000-$45,000. That is the margin that makes the risk worthwhile.

If your ARV estimate is off by just 5% ($190,000 instead of $200,000), your profit drops to $28,500. Off by 10% ($180,000), you are down to $18,500 — still positive but barely worth the risk and effort. Off by 15%, you are at breakeven or worse. That is why ARV accuracy matters more than any other number in the deal.

ARV in BRRRR Strategy

In a BRRRR deal, the ARV determines how much cash you get back when you refinance. Most lenders cap cash-out refinances at 75% of the appraised value (which should be close to your ARV if you estimated correctly).

Maximum refinance amount = ARV x 0.75

Using our $200,000 ARV: $200,000 x 0.75 = $150,000

If your all-in cost (purchase + rehab + closing + holding) was $145,000, you refinance at $150,000 and get all your capital back plus $5,000. You now own a cash-flowing rental with zero dollars of your own money in the deal.

If your all-in cost was $160,000, you only get $150,000 back and leave $10,000 in the deal. Still a good outcome — $10,000 tied up in a rental property is far less than the $40,000-$50,000 you would have left in a conventional purchase — but you did not achieve a full capital recycle.

The math makes clear that BRRRR only works when you buy at a steep enough discount and keep rehab costs under control. The ARV sets the ceiling for your refinance. Your total investment needs to stay below that ceiling. For more on financing the refinance step, check current investment strategies and understand how DSCR and conventional options affect your numbers.

Finding Good Comps

The quality of your ARV estimate depends entirely on the quality of your comps. Here is how to find the right ones and avoid the wrong ones.

Use sold data, not active listings. What a seller is asking and what a buyer actually pays are often different numbers. Active listings represent hope. Sold prices represent reality. Only use closed sales as comps. Pending sales can supplement your analysis, but do not rely on them exclusively since the final price may differ from the list price.

Match post-rehab condition. Your comps must reflect what your property will look like after renovations, not what it looks like today. If you plan to install mid-grade finishes (LVP flooring, granite counters, stainless appliances), your comps should have similar finish levels. Do not use comps with high-end custom finishes if you are doing a standard investor-grade rehab. And do not use unrenovated comps — those reflect the “before” value, not the “after.”

Avoid distressed sales. REO (bank-owned) sales, short sales, and auction sales typically close below market value because of the circumstances of the sale, not the quality of the property. These will pull your ARV estimate down artificially. Exclude them unless there is truly nothing else to comp against.

Prioritize proximity and recency. A comp from three blocks away that sold last month is better than a comp from a mile away that sold six months ago. Real estate is hyper-local — values can shift meaningfully across a few blocks, especially around school district boundaries, highway noise buffers, or commercial zones.

Check photos, not just data. Two houses can have identical square footage, beds, and baths but very different values because of interior condition. Always look at listing photos of your comps to verify the finish level matches what you are planning. MLS photos show you what the buyer actually paid for.

Talk to local agents. A good real estate agent who works your target area can tell you things data cannot — which streets are desirable, which subdivisions have HOA restrictions, where values are trending up versus flat. Build a relationship with an investor-friendly agent. Their market knowledge is worth more than any online comp tool.

Common ARV Mistakes

Most ARV errors are not calculation mistakes — they are input mistakes. Investors use the wrong comps, make unrealistic assumptions, or let optimism override the data. Here are the mistakes that cost the most money:

Using active listings instead of sold prices. This is the number one beginner mistake. Listing prices are aspirational. In a softening market, homes routinely sell for 3-8% below list price. If your ARV is based on what similar homes are listed for rather than what they actually sold for, you are building your analysis on inflated numbers.

Choosing comps too far away. Expanding your search radius beyond 0.5-1 mile introduces neighborhood-level value differences that are hard to adjust for. A renovated ranch on the good side of a school district boundary might be worth $200,000 while the same house across the street (different school district) sells for $175,000. Keep your comps tight geographically.

Ignoring market direction. If the local market has been declining for the last 3-6 months, comps from 6 months ago overstate current values. If the market is rising, older comps understate value. Adjust for the trend. Look at price per square foot over time, not just individual sales.

Over-estimating rehab scope and finish level. Planning to add a bedroom, convert a garage, or install a luxury kitchen? Make sure your comps support the value increase you expect. Adding a fourth bedroom only adds value if your comps show a clear premium for 4-bed homes over 3-bed homes in that specific neighborhood. If all the comps are 3-bed and sell for the same price, the extra bedroom may not return what it cost.

Confirmation bias. You want the deal to work, so you cherry-pick the highest comps and dismiss the lower ones. This is human nature, and it kills deals. Be honest with the data. If one comp says $195,000 and two others say $180,000, the deal is probably a $185,000 ARV — not $195,000. If you need the deal to work at $195,000 to hit your profit target, it probably does not work. Move on. For more on evaluating deals honestly, see our guide on negotiating based on real data.

Forgetting seasonal and market condition adjustments. Homes typically sell for more in spring and summer than in fall and winter. If your comps closed in May and you plan to list in December, you may need to adjust down 2-5%. This matters more in seasonal markets (Northeast, Midwest) than in Sun Belt cities where the market is active year-round. Check the best flipping markets to understand regional dynamics.

Frequently Asked Questions

How accurate does my ARV estimate need to be?

For a flip using the 70% rule, your margin of error is about 10%. If your ARV estimate is off by more than that, your profit disappears or turns into a loss. Aim for 3-5% accuracy by using 3-5 tight comps with minimal adjustments. If you cannot find good comps — maybe it is a unique property or a thin market — that is a signal to either pass on the deal or build in a larger margin by lowering your maximum offer price.

Should I use an appraiser to determine ARV?

Professional appraisals cost $350-$500 and give you the most defensible ARV estimate. They are worth the cost on your first few deals or any deal where you are unsure about your comp analysis. However, most experienced flippers do their own comp analysis and only encounter the appraiser at closing (when the buyer’s lender orders one) or during a BRRRR refinance. The risk is that the appraiser’s value may differ from yours. If you build in sufficient margin, a lower-than-expected appraisal will not sink the deal.

What if I cannot find enough comparable sales?

Thin comp markets are common in rural areas, unique property types, and neighborhoods with low turnover. When you cannot find 3 comps within 0.5 miles and 6 months, expand cautiously — go to 1 mile or 9 months, but adjust for the reduced reliability. You can also use pending sales (under contract) as supporting data, though the final price is unknown. In very thin markets, consider whether flipping is viable at all — if you cannot confidently estimate the ARV, the risk may be too high.

How does ARV differ from current market value?

Current market value (or “as-is value”) is what the property is worth right now in its current condition. ARV is what it will be worth after renovations. The difference between the two is the value created by the rehab. For a live-in flip, you buy at the as-is value, renovate over time, and eventually sell at or near the ARV. For a traditional flip, you buy below the as-is value (at a distressed discount) and sell at the ARV.

Can I use Zillow’s Zestimate as my ARV?

No. Zillow’s Zestimate is an automated valuation model (AVM) that estimates current value based on algorithms, not property-specific analysis. It does not account for your planned renovations, and its accuracy varies widely by market — Zillow’s own data shows a median error rate of about 2-3% nationally, but in some neighborhoods it can be off by 10-15%. Use Zestimate as a starting point to check your sanity, not as your actual ARV. Always run your own comp analysis or hire an appraiser for deals where real money is at risk.