After Repair Value (ARV) is the estimated market value of a property once renovations are complete — and it's the single number that drives nearly every other decision in a flip: your maximum purchase price, your rehab budget ceiling, and your projected profit. Get ARV wrong and every calculation built on top of it is wrong too. The standard method for estimating it is the sales comparison approach, the same method appraisers use.
The sales comparison method, step by step
- Pull recently sold comparables ("comps"). Look for homes that sold — not just listed — within roughly the last 3 to 6 months, ideally within a half-mile of the subject property, though this radius should expand in rural areas and shrink in dense urban ones. Aim for at least 3, and ideally 4 to 6, comps.
- Match on the fundamentals first. Similar square footage (generally within 10–15%), same or similar bed/bath count, similar lot size, similar age or construction era, and the same school district or neighborhood boundary matter more than almost anything else.
- Match the condition to your after-repair state, not the current state. Since ARV represents the property after renovation, your comps should be homes that were in similarly renovated, move-in-ready condition when they sold — not other distressed properties.
- Adjust each comp for differences. If a comp has one more bedroom, an extra bathroom, a garage you won't have, or more square footage, adjust its sale price up or down to account for that difference before using it. Local appraisers and agents can give you realistic dollar adjustments for your specific market (for example, a typical per-bathroom or per-bedroom adjustment varies significantly by area, so use local data rather than a generic national figure).
- Calculate price per square foot for each adjusted comp, then apply a blended average price-per-square-foot figure to your subject property's square footage as a cross-check against your adjusted-comp average.
- Average the adjusted comps to arrive at your ARV estimate. Weight more heavily toward the comps that are the closest match in location, size, and condition rather than a flat average of all of them.
Where to find comps
- MLS access through a real estate agent or your own license gives you the most accurate and complete sold data, including off-market details agents can see that public sites don't show.
- Public sold-listing sites (Zillow, Redfin, Realtor.com) are useful for a quick gut check but can lag or show estimated values rather than actual closed prices — verify against county recorder data when possible.
- County recorder/assessor records show actual recorded sale prices and are a reliable way to confirm what a comp truly sold for.
- A local real estate agent who works with investors can often pull a fast, informal comparative market analysis (CMA) for you, which is worth the relationship even before you have an active deal.
A simple illustrative example (not a real deal)
Suppose you're evaluating a 3-bed, 2-bath, 1,600 sq ft home. You find three comps that sold in the last 4 months, all renovated and within a half-mile:
- Comp A: 1,550 sq ft, 3 bed/2 bath, sold for $285,000 → roughly $184/sq ft
- Comp B: 1,700 sq ft, 3 bed/2 bath, sold for $305,000, adjusted down slightly for the extra 100 sq ft → roughly $180/sq ft after adjustment
- Comp C: 1,600 sq ft, 3 bed/2.5 bath, sold for $298,000, adjusted down slightly for the extra half-bath → roughly $183/sq ft after adjustment
Blended average: roughly $182/sq ft × 1,600 sq ft ≈ $291,000 illustrative ARV. This is purely a made-up example to show the mechanics — every real ARV estimate depends entirely on your actual local comps.
Common mistakes that inflate ARV (and your risk)
- Using comps that are too far away or too old. A comp from 10 months ago or two miles away in a different school zone tells you much less than it feels like it should.
- Comparing to other distressed properties instead of finished, renovated homes, which understates true after-repair value.
- Ignoring condition differences between your comps and your planned finish level — a comp with high-end finishes shouldn't be used to justify a builder-grade renovation, or vice versa.
- Skipping a second opinion. Running your ARV past a local agent or appraiser before finalizing an offer is cheap insurance against a number that's off.
Frequently Asked Questions
Q: How does ARV relate to my maximum purchase price?
A: Many investors use ARV as an input to a screening guideline like the 70% rule: maximum offer ≈ (ARV × 0.70) − estimated repair costs. That's a rough filter some investors use, not a guarantee of profit, and the percentage some investors use varies by market and deal type.
Q: How many comps do I really need?
A: Three is the practical minimum most lenders and appraisers expect to see, but 4 to 6 solid comps give you a more reliable, defensible number, especially if the first three don't closely agree with each other.
Q: Should I trust an automated valuation model (AVM) for ARV?
A: AVMs can be a fast starting point but are frequently inaccurate for distressed or unique properties because they can't see condition. Use them as a sanity check, not as your final number.
Q: Does ARV change if the market shifts while I'm renovating?
A: Yes. ARV is a snapshot based on current comps, and a multi-month renovation timeline carries real risk that the market moves before you sell. Re-checking comps as you approach your listing date is good practice on longer projects.