ARV (after-repair value) calculator
Three comparable sales, weighted to favour the average. Add a small subjective shift for orientation and street appeal. Get a defensible target sale price.
Comparable sales
Use a small +/- shift only — 5% max either way
Result
Weighted base ARV
(low + 2×avg + high) ÷ 4
$775,000
Subjective adjustment
$0
Estimated ARV
$775,000
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What is ARV?
ARV (After-Repair Value) is your estimated sale price after the renovation. It's the single most important number in any flip — get it wrong and the rest of the feasibility collapses.
How comparable sales work
Comparable sales (or "comps") are recent transactions on similar properties in the same area, ideally the same street. For a flip, you want comps that match the post-reno condition you're targeting — not the as-is state of the subject property. So if you're cosmetically renovating, look for sales of recently-refreshed houses, not tired ones.
Why weight the average?
Picking the highest comp is wishful. Picking the lowest is pessimistic. We weight the median comp twice and the high/low once each, which produces a conservative central estimate. From there, a small ±5% adjustment for orientation, street appeal or internal layout is reasonable. More than that, and you're guessing.