Guides · Fix & Flip · 7 min read
How ARV is determined on a fix-and-flip, why the appraiser's number usually lands below yours, what a low ARV costs you at closing, and how to underwrite the gap in advance.
On a renovation project, almost everything a lender does traces back to after-repair value. Loan size, leverage, whether the rehab budget is fully covered, whether the deal is approved at all — all of it is measured against what the property is expected to be worth when the work is finished. The purchase price matters. The scope matters. But ARV is the ceiling everything else fits underneath.
Which is why the most expensive surprise in this business is not a framing problem or a permit delay. It is an appraisal that comes back below the number the entire project was built on.
An investor's ARV usually starts with the best recent sales in the neighborhood and a view of what the finished product will be. An appraiser's ARV starts somewhere colder: closed sales only, weighted toward the last three to six months, in the same submarket, adjusted line by line for square footage, bedroom and bath count, lot size, garage, and finish level. Pending listings and active inventory are supporting evidence at best — they are prices someone is asking, not prices someone paid.
The appraisal returns two figures. As-is value is what the property is worth in its current condition. After-repair value is what it is expected to be worth once the submitted scope of work is complete, to the quality described. That second figure is conditioned on the scope actually being delivered. An appraiser valuing quartz counters and refinished hardwood is not valuing the laminate you substitute in month four when the budget tightens.
Lender-side ARV commonly comes in modestly below investor-side ARV — often a few percent. Underwrite your deal at the lower number before you submit it, and a conservative appraisal becomes a non-event instead of a capital call.
Renovation lending is generally constrained by a percentage of ARV, applied to the total of purchase financing plus rehab funds. Advance rates vary by lender, market, and borrower experience, and everything is subject to underwriting — but the mechanic is consistent: the ARV cap is the binding constraint, and the borrower funds whatever the cap does not reach.
Take a project bought for 340,000 with a rehab budget of 85,000, where the sponsor's own ARV is 545,000 and the appraisal lands at 505,000. Against a 70% ARV constraint:
| Sponsor's ARV | Appraised ARV | |
|---|---|---|
| After-repair value | 545,000 | 505,000 |
| Maximum loan at 70% of ARV | 381,500 | 353,500 |
| Purchase plus rehab | 425,000 | 425,000 |
| Sponsor cash required (before closing and carry) | 43,500 | 71,500 |
A 40,000 difference in opinion of value became 28,000 of additional cash due at closing. Nothing about the building changed. Only the number the loan was measured against.
The cash gap is the visible problem. The real one is whether the deal still works. Run the exit at the appraised figure: 505,000 sale, roughly 8% in commissions and closing costs, purchase of 340,000, rehab of 85,000, and say 32,000 in financing and holding costs across the hold period.
| Sale price | 505,000 |
| Selling costs (~8%) | (40,400) |
| Purchase | (340,000) |
| Renovation | (85,000) |
| Financing and carry | (32,000) |
| Net | 7,600 |
Seven thousand dollars for six months of work, personal guarantees, and full market risk. At the sponsor's 545,000 the same project nets roughly 44,400. That is the whole spread between a viable flip and a busy way to break even — and it lived entirely inside an assumption nobody verified until the appraisal arrived.
The uncomfortable version, said plainly: a deal that only clears at your ARV and not at a conservative one is not a thin deal. It is a deal whose margin is an estimate.
If the appraisal misses genuinely better comparable sales, most lenders will consider a reconsideration of value supported by closed-sale evidence. Bring data, not disagreement. And know that a successful reconsideration adjusts the figure — it does not change the underwriting rule the figure is measured against.
The practical discipline is short. Build your ARV from closed sales only. Subtract a few percent for the appraiser's conservatism. Model the project at that reduced number, with realistic selling costs and a hold period longer than your plan. Then check that you can fund the resulting cash requirement without draining the reserves that carry the job. A project financed to the dollar has no capacity to absorb the one surprise every renovation produces.
Test the exit math on the fix-and-flip calculator before the offer, not after the appraisal. Holding costs deserve the same scrutiny — see where construction budgets actually leak for the line items that quietly consume the margin, and how construction draws are funded if your scope is heavy enough to be staged. If the plan is to hold rather than sell, the value question changes shape entirely — rental underwriting turns on income coverage, not resale comps. Current market indicators are on our rates page, and when a project is underwritten and ready, you can start an application.
Send the address, the budget, and the timeline — you will get a straight answer, not a maybe.
Submit a ProjectAfter-repair value is the appraised market value of a property once the planned scope of work is complete. It is an opinion of future value based on comparable sales of finished properties, not a projection of what the investor hopes to list at. On a fix-and-flip loan it is usually the number that caps how much a lender will advance.
The lender orders an appraisal that reports two values: as-is value today, and after-repair value assuming the submitted scope of work is completed to the described quality. The appraiser selects recently sold comparable properties in similar condition and location, adjusts for differences in size, lot, and finish, and reconciles to a single figure. The lender then sizes the loan against that figure, not against the investor's estimate.
Usually because the comparable sales differ. Investors tend to comp against active or pending listings and the best finished sales in the area; appraisers use closed sales, weight recency heavily, and adjust down for anything the subject property will still lack after renovation. Lender-side ARV commonly lands modestly below investor-side ARV, and the difference has to come from somewhere.
The loan is sized off the lower figure, so the borrower typically covers the difference in cash at closing or reduces the scope. Some lenders will accept a reconsideration of value supported by better comparable sales, but the underwriting rule does not move. The more important question is whether the project still clears a profit at the appraised number — if it does not, the low appraisal did not break the deal, it revealed it.
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