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Free global money tool · Reviewed 2026-10-02

ARV Calculator — Comparable Sales Estimate

Estimate indicative after-repair value from matching sold prices and floor areas, subject size, a supported adjustment and user-entered project costs.

Reviewed by Mohammad QasimMethod and limitations disclosed
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How this calculator helps

The ARV calculator estimates an indicative after-repair value from comparable sold prices and their floor areas. Each comparable contributes equally through its price per square foot. You then apply that average to the subject property's size and any evidence-supported percentage adjustment you enter. This is a transparent screening model, not a professional appraisal or a predicted selling price. It does not find comparable properties, verify their condition or decide which transaction is relevant. The quality of those selections matters more than the number of displayed decimals.

How to use it

  1. 1

    Enter one to twenty sold prices separated by commas and the matching floor areas in the same order.

  2. 2

    Enter the subject floor area, a supported adjustment from −100% to +100%, and combined rehab, holding and selling costs if reviewing project economics.

  3. 3

    Click Calculate result to submit these values. Input edits keep the previous result until the next click.

  4. 4

    Compare the supporting outputs with the worked example and retain the input units with your result.

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Formula and methodology

Indicative ARV = mean of each comparable sold price/floor area × subject floor area × (1 + adjustment/100). Net before acquisition = ARV − entered project costs.

The calculator applies the displayed arithmetic to the values entered on this device. It does not silently load a local tax rate, currency conversion or commercial assumption.

Worked calculation example

Comparable sales of 200,000/1,000 ft² and 330,000/1,500 ft² average 210 per ft². A 1,200 ft² subject with zero adjustment gives an indicative ARV of 252,000.

How to interpret your result

Transparent equal-weight comparable price/area model; no appraisal, automatic market adjustment or investment recommendation. Inspect comparable unit prices before the estimated subject value. Each observation has equal weight in this model, so an outlier is visible rather than silently filtered. The cost-subtracted amount still needs acquisition price and profit assumptions.

For different inputs or formulas, use Seller Financing Calculator; Seller Net Sheet Calculator; Debt Service Coverage Ratio Calculator.

Related questions this calculator covers

  • arv calculator

Scenario comparison

ScenarioWhat it shows
200,000/1,000 and 330,000/1,500mean 210 per ft².
1,200 ft² subject at 210base 252,000.
252,000 less 40,000 supplied costs212,000 before acquisition and profit.

Common mistakes to avoid

  • Mismatching price and floor-area list order.
  • Mixing asking prices with sold transactions.
  • Calling value less costs a recommended purchase bid.
How to verify this result

Calculate every sold-price/floor-area ratio separately and average those ratios. For zero adjustment, dividing the subject estimate by its floor area should reproduce that mean. Do not substitute a pooled-price/pooled-area calculation.

Transparent equal-weight comparable price/area model; no appraisal, automatic market adjustment or investment recommendation.

What can affect the result?

Choose comparable evidence

Use actual sold transactions whose location, property type, size, condition and timing are relevant to the intended finished subject. Asking prices are different from completed sale prices. A nearby property may still be a poor comparable if its features, tenure or use differ. This tool cannot validate those facts. Record the source and date of each sale and note any uncertainty before copying the numbers into the fields. When evidence is weak, report a broad scenario range instead of presenting the arithmetic average as an independently verified market value.

Equal weighting and area basis

The model computes each sale's price per square foot and takes a simple mean. It does not divide combined prices by combined area, which would give larger comparables more influence. All entries must use a consistent floor-area definition and the same currency. Mixing gross building area with usable interior area changes the ratios. An anomalous sale can move a small sample's average substantially, so inspect each ratio rather than relying only on the final output. The calculator does not automatically discard outliers or choose a statistically optimal weighting.

Adjustments and project costs

The adjustment changes the entire comparable estimate by the percentage you supply. It is not a substitute for an appraisal's property-specific adjustment grid, and this page supplies no default market appreciation or renovation uplift. Enter zero if you have no defensible basis for a change. The combined cost field is subtracted after value estimation and should contain the rehab, holding and selling costs you actually want to compare. The resulting amount is before acquisition price and target profit; it is not a recommended offer or a lender-approved borrowing limit.

Decision boundaries

ARV describes an assumed completed-condition value, while today's as-is value may be different. A renovation budget does not automatically add the same amount to resale value. Delays, financing terms, taxes, local restrictions and changes in market demand can alter project economics. This tool contains no universal seventy-percent rule and does not promise a profitable flip. Compare several credible sale selections and cost cases, retain an explicit contingency outside this simplified model, and consult appropriately qualified property and financial professionals before committing money.

Privacy and browser processing

Values entered on this page are processed in the current browser session. SolvePilot does not require an account and does not receive the values entered into the calculator. Refreshing or closing the page clears the working values unless the browser itself restores a previous session. Avoid entering identifying or account information because the calculation needs summary values only.

Accuracy and verification

Accuracy depends first on input quality. Confirm definitions, scales, dates and source information before entering a value. Keep an independent record of any result used for planning because this page does not create an official statement or retain a calculation history.

Limits of this estimate

Transparent equal-weight comparable price/area model; no appraisal, automatic market adjustment or investment recommendation. Results describe the entered model only. Check source measurements and assumptions independently. Positive numeric inputs smaller than 0.000000001 are outside the supported calculation range. Calculator inputs are processed locally by the shared browser interface; no professional evaluation is performed.

Important: Treat the result as a planning estimate. Confirm official requirements and consequential decisions with the relevant institution, authority or qualified professional.

Sources and review information

This tool uses a disclosed calculation and user-entered values; it does not embed private institutional data or guarantee an outcome.Read our editorial and calculation policy →About the author and reviewer →

Frequently asked questions

What does ARV mean?+

ARV means after-repair value: an assumed market value after a specified improvement scope is completed. This calculator estimates it from user-selected sold comparables. It does not verify the renovation plan, inspect the property or establish a professionally appraised value.

Why are prices and areas entered in matching order?+

Each sale price is divided by the floor area for that same comparable. Swapping entries creates false price-per-area ratios. The lists must have equal length, and each value must be positive. Keep the original transaction record beside your input list.

Does a 50,000 renovation add 50,000 to value?+

Not necessarily. Cost and market value are different. The calculator does not assume dollar-for-dollar renovation gains; costs are entered separately for project screening. Completed-condition comparable evidence is needed to support the after-repair valuation assumption.

Is value less costs my maximum purchase offer?+

No. That amount still precedes acquisition price, target profit and costs you did not enter. It is one bookkeeping comparison, not bidding advice. A complete investment assessment also needs financing, contingencies, taxes, timing and independently checked market information.

Can I use asking prices as comparables?+

The method is designed around sold prices. Asking prices reflect seller intentions rather than completed transactions and can bias an estimate. If only listings are available, label that limitation clearly and avoid presenting the output as evidence from actual sales.