After-Repair Value (ARV): How to Estimate It Accurately

After-repair value (ARV) is what a property will sell for once the renovation is complete, based on comparable sales of similar homes already in finished condition. It’s the single most important number in a fix-and-flip analysis — every other figure (max offer, profit, ROI) flows downstream from it. An ARV that’s 10% too high can turn a promising deal into a loss before you pick up a hammer.

What ARV is — and what it’s not

ARV is a projected future sale price, not the current as-is value. It assumes the renovation is complete and the property shows at its intended finished quality. That means ARV is always an estimate — even professional appraisers arrive at ranges, not certainties. Your job is to build the estimate conservatively, using real market evidence, and then stress-test it.

ARV is not the Zillow Zestimate, the assessed tax value, or the asking price of comparable active listings. Tax assessments lag the market by a year or more. Active listings are what sellers hope to get; closed sales are what buyers actually paid. Always anchor ARV to closed comps.

The comparable-sales method

The standard approach is the same one licensed appraisers use: find recently sold homes that are similar to your property in its finished state, then adjust for differences.

The tighter your comp criteria, the more reliable your ARV. Aim for comps that are:

• Sold within the last 90 days — 6 months is the outer limit; anything older may reflect a different rate environment.
• Within 0.5 miles in urban/suburban areas; up to 1 mile in rural markets where sales are sparse.
• Similar square footage — within ±15–20% of your subject property’s finished square footage.
• Same bedroom and bathroom count, or very close. A 3/2 and a 4/2 are not the same product to buyers.
• Similar condition and finish level. A fully renovated comp with granite counters and LVP flooring is apples-to-apples with your planned finish — a dated original-condition sale is not.

Pull comps from the MLS (through an agent or a service like PropStream), public records, or county assessor data. Aim for at least three closed comps; five is better.

A worked example

You’re evaluating a 1,450 sq ft, 3-bed/2-bath ranch in a suburban neighborhood. After renovation it will have updated kitchen and baths, new flooring, and fresh paint — a clean mid-grade finish. You find five closed sales in the past 90 days within 0.4 miles:

• 123 Oak St — 3/2, 1,480 sq ft, fully renovated — sold $285,000
• 456 Maple Ave — 3/2, 1,390 sq ft, renovated — sold $272,000
• 789 Pine Rd — 3/2, 1,510 sq ft, renovated — sold $291,000
• 321 Elm Ct — 3/2, 1,440 sq ft, renovated — sold $279,000
• 654 Birch Ln — 4/2, 1,600 sq ft, renovated — sold $310,000

The 4/2 comp is larger and has an extra bedroom, so it needs an adjustment. At roughly $175/sq ft implied by the other comps, the 150 sq ft difference is worth about $26,000 and the extra bedroom adds roughly $10,000 — adjusting the 654 Birch Ln sale down to approximately $274,000 on an adjusted basis.

Your five adjusted comps cluster between $272,000 and $291,000 with an average of about $280,000. A conservative ARV is the lower end of that range — call it $278,000 — to build in a margin of error.

With a $278,000 ARV and $42,000 in estimated repairs, the 70% rule gives a max offer of:

($278,000 × 70%) − $42,000 = $194,600 − $42,000 = $152,600

The three adjustments every comp needs

Even tight comps rarely match your subject property perfectly. The three most important adjustments are:

• Size adjustment. Derive a price-per-square-foot figure from your best comps and multiply the square-footage difference by that rate. Be careful: the first few hundred square feet of difference matter more than additional footage on already-large homes.
• Bedroom/bathroom adjustment. An additional bedroom in a market where buyers are paying a premium for extra rooms might add $8,000–$15,000; a missing bathroom can shave a similar amount. Talk to a local agent to calibrate — the adjustment varies widely by price point and submarket.
• Condition and finish adjustment. If your comps are higher-end finishes (quartz, custom tile, hardwood) and your planned renovation is more budget-conscious (LVP, builder-grade cabinets), discount your ARV accordingly. Buyers notice and price it in.

The most common ARV mistakes

• Cherry-picking the highest comp. It’s tempting to anchor on the best sale in the data set. Instead, use the median or a weighted average of credible comps. Outliers are outliers — that top-of-market sale may have had a pool, a premium lot, or a bidding-war premium you can’t replicate.
• Using active listings instead of closed sales. Active listings represent aspiration, not market value. Always base ARV on what buyers actually paid at closing.
• Ignoring days on market. A comp that sat 120 days before selling probably had a price reduction and reflects weaker demand than one that went under contract in a week. Comp quality matters as much as comp quantity.
• Assuming your renovation will beat the market. High-end finishes rarely return dollar-for-dollar in entry-level and mid-market price points. Over-improving for the neighborhood sets an ARV ceiling that comps can’t support.
• Skipping the agent conversation. A local real-estate agent who works that zip code actively can spot neighborhood-specific factors — school district lines, a busy road nearby, a new development going in — that data alone won’t reveal.

How to stress-test your ARV

Once you have a base ARV, run a quick sensitivity check before you make an offer:

• At ARV − 5%, is the deal still profitable?
• At ARV − 10%, do you still break even?
• If the market softens 5% during your hold period (possible if rates move or inventory rises), does the deal survive?

If the deal blows up at a 5% ARV miss, the margin is too thin. A properly structured flip should be able to absorb a modest ARV miss and still return a profit.

Frequently asked questions

What’s the difference between ARV and after-repair appraisal?

An ARV is your investor estimate; an after-repair appraisal is an opinion by a licensed appraiser, typically ordered by a lender at the time of the loan. Lenders on fix-and-flip projects often order an as-completed appraisal before funding to confirm your ARV is supportable. If the appraisal comes in lower, your loan proceeds shrink.

Can I use online tools like Zillow or Redfin to estimate ARV?

Automated valuation models can be a starting point for a ballpark range, but they’re unreliable for individual deals — especially on distressed or significantly below-market properties, where the algorithms often have sparse comparable data. Always verify with MLS-sourced closed comps or a CMA from a local agent.

How far back should I go for comps?

In a stable market, 90 days is ideal and 6 months is the outer bound. In a rapidly appreciating or declining market, tighten that to 60 days and flag the trend direction — your ARV should reflect where prices are heading, not just where they’ve been.

Does ARV include the land?

Yes. ARV is a whole-property sale price — improvements plus land. You don’t need to separate them for flip analysis, since buyers pay for the finished house on its lot. Land value matters more explicitly in tear-down or new-construction analysis.

How does ARV differ from the 70% rule input?

The 70% rule directly uses ARV as its input: Max Offer = (ARV × 70%) − Repairs. The quality of your ARV estimate determines the quality of your max offer. A 10% ARV error gets multiplied through the formula, so tightening your ARV estimate is the highest-leverage skill to develop as a flipper.

The bottom line

ARV is an estimate grounded in evidence, not a number you reverse-engineer to make the deal work. The investors who build reliable ARV estimates — using tight comp criteria, honest adjustments, and local market knowledge — make better offers, underwrite better deals, and avoid the costly mistakes that define most first flips.

Plug your ARV and repair estimate into the Fix & Flip Calculator to see your max offer, projected profit, and ROI in one view. If you’re financing the acquisition with hard money, use the calculator’s financing inputs to model how points, interest rate, and hold time eat into your spread.