The AMC Revision Request Survival Guide: The 15 Most Common Asks

Every appraiser knows the sound of an AMC revision request. It lands at 4:55pm on a Friday or 9pm on a Tuesday, it's due in 24 hours, and half the time the answer is already in the report. In the National Association of Realtors' 2025 survey, AMC requests for revisions were named a top challenge by 35% of appraisers, up from 28% in 2023. This survival guide covers the 15 requests we see most, why each one happens, how to head it off before delivery, and sample language you can adapt. The samples are starting points. Edit them so they're true for your assignment.

Key takeaways

• Most revision requests are generated by checklists and automated flags, not by a reviewer doubting your value.
• If you answer the predictable question inside the report, the request usually never comes.
• Fix real errors fast and without ego. Defend supported conclusions calmly and in writing.
• Never change an opinion of value you don't believe in to clear a stip.

Why revision requests happen

It helps to know who's on the other end. A typical AMC reviewer is working from three things: the lender's overlays, an automated score (such as Collateral Underwriter for Fannie Mae loans), and a checklist. Their job is to clear the file. When a flag fires, the fastest way to clear it is to ask you about it. That's why so many requests read like templates: they are.

That's also why prevention works. If you know which flags fire, you can address them before delivery. For the bigger picture on why this wears appraisers down, see why appraisers are burned out.

Watch out: You can correct facts, add support and clarify reasoning. You should not change an opinion you still believe is supported just to make a request go away. If you're pressured to, document it.

The 15 most common revision requests

1. "Please provide a comp within 1 mile sold within 90 days"

Why: A distance and date checklist, often from a lender overlay. In rural and thin markets, it's frequently impossible.

Prevent it: State your search: the radius, the time frame, the filters and how many results came back. Say what you expanded and why.

Sample: "The search of closed sales within 1 mile and 6 months returned no sales of similar size, age and site. The search was expanded to 5 miles and 12 months within the same school district and market area. The comparables used are the most similar available. No additional sales meeting the requested criteria exist."

2. "Explain why comps exceed distance or age guidelines"

Why: Same root as number 1, flagged per comp rather than overall.

Prevent it: Add one sentence per outlier comp in the sales comparison comments.

Sample: "Comparable 3 is 3.2 miles from the subject but is in the same rural township, with similar acreage and outbuilding utility. It was included because closer sales are smaller tract homes that do not reflect the subject's market."

3. "Please bracket the subject's GLA, age or site size"

Why: Reviewers want at least one comp above and one below on major features.

Prevent it: Check bracketing before you finalize. If you can't bracket, say so and why.

Sample: "The subject is the largest home in its neighborhood. No sales of larger homes occurred in the market area during the search period. The adjustment for GLA is supported by paired sales described in the addendum."

4. "Net or gross adjustments exceed 15% and 25%"

Why: An old rule of thumb that still lives in many review scripts. Fannie Mae removed the 15% net and 25% gross guidelines in SEL-2014-16 and asks for market-based adjustments instead. Other investors and agencies may still use them, so check the assignment.

Prevent it: When adjustments are large, explain that the comp is still the best indicator and how the adjustments are supported.

Sample: "Gross adjustments for Comparable 2 exceed 25% due to the subject's larger site and detached garage. The comparable is retained because it is the most recent sale in the subject's subdivision. Adjustments reflect market-derived rates."

5. "Comment on these sales that were not used"

Why: An automated tool suggested other comps, and the reviewer needs you to address them.

Prevent it: Note the strong sales you considered and rejected, and why. UAD 3.6 builds this into the report with an Additional Properties Analyzed but Not Used section, so it becomes standard practice anyway.

Sample: "123 Oak St. was considered and not used: it sold as a short sale with deferred maintenance (C5) and is not representative of the subject's C3 condition."

6. "GLA differs from public record or a prior appraisal"

Why: Public records are often wrong, but a large variance looks like a red flag.

Prevent it: State the variance and that you measured per ANSI Z765. Mention what accounts for it (a finished attic, an unpermitted addition, a below-grade area).

Sample: "The subject was measured on site per ANSI Z765. Public record reports 1,640 sq ft; measured GLA is 1,812 sq ft. The difference is a second-floor addition not reflected in county records."

Our post on ANSI Z765 and GLA under UAD 3.6 covers measuring and below-grade space in detail.

7. "Missing photos"

Why: Missing bedrooms, baths, mechanicals, smoke and CO detectors, the street scene, or a deficiency you mentioned. Many lender and AMC checklists require specific shots.

Prevent it: Use a standard shot list per property type and a final photo pass before you leave the property. Label every photo.

Sample: "Smoke and CO detector photos have been added to the photo addendum, pages 14–15."

8. "Support the condition or quality rating"

Why: A rating that doesn't match the photos, the year built or the comps.

Prevent it: Tie the rating to what you observed: updates and their timing, deferred maintenance, materials.

Sample: "The C3 rating reflects a kitchen updated about 8 years ago and original but well-maintained baths. No deferred maintenance was observed."

9. "Analyze the contract" or "address the concessions"

Why: Missing contract pages, an unanalyzed amendment, seller concessions not addressed.

Prevent it: Request the full contract and all addenda at assignment. Summarize price, date, concessions and personal property in the contract analysis.

Sample: "The contract dated 9/12/2026 for $415,000 was reviewed, including Addendum 2 increasing seller concessions to $8,000. Concessions are typical for the market and no adjustment to the subject's value is warranted."

10. "Support the market conditions or time adjustment"

Why: Market trend marked "increasing" or "declining" with no data, or time adjustments that look arbitrary.

Prevent it: Show the trend data you relied on: median price, months of supply, days on market over 12 months, and the rate you derived.

Sample: "Paired resales and median sale price trends indicate appreciation of about 0.4% per month over the past 12 months. Time adjustments were applied at that rate from the contract date of each comparable."

11. "Address the subject's prior sale or listing history"

Why: A recent transfer, flip or expired listing not analyzed.

Prevent it: Report and analyze the subject's prior sales and current or recent listings as your assignment requires. Explain any big price change.

Sample: "The subject sold 14 months ago for $280,000 in C5 condition. It has since been renovated, including roof, HVAC, kitchen and baths, which explains the increase."

12. "Comment on zoning compliance and ability to rebuild"

Why: Legal nonconforming use, or no statement about rebuilding if destroyed.

Prevent it: State zoning, compliance, and, for legal nonconforming uses, what the zoning code says about rebuilding and its effect on value and marketability.

Sample: "The subject is a legal nonconforming use under the R-1 zoning. Per the municipal zoning office, the structure may be rebuilt to its current footprint if destroyed. No adverse effect on marketability was observed."

13. "Comment on highest and best use"

Why: A box checked without support, or a site that looks like it could be split or redeveloped.

Prevent it: One or two sentences that address physical possibility, legal permissibility, financial feasibility and maximal productivity in plain terms.

Sample: "The present use as a single-family residence is legally permitted, physically possible, financially feasible and maximally productive given the zoning and neighborhood. A lot split is not permitted under current zoning."

14. "License or E&O expired" or "signature date issue"

Why: An exhibit from last year, a missing E&O page, or a signature dated before the inspection.

Prevent it: Keep current license and E&O exhibits in your firm profile so every report uses the latest version. Check dates on the certification page.

Sample: "The current license (exp. 12/31/2027) and E&O declaration page have been attached. The signature date has been corrected to 10/14/2026."

15. "Please consider these comparables" (reconsideration of value)

Why: A low value against the contract, with sales supplied by the agent or borrower. Since the July 2024 interagency guidance and the GSE and FHA requirements that followed, borrower-initiated ROVs are supposed to run through a defined lender process.

Prevent it: You can't always prevent an ROV, but a report that already addresses the best competing sales leaves less to reconsider.

Sample: "The three sales provided were reviewed. 45 Elm St. was already analyzed and not used due to its superior lake frontage. 18 Pine Ct. closed after the effective date and is not considered. 902 Birch Ln. is a newer two-story with 600 sq ft more GLA; after adjustment it indicates $398,000, consistent with the reconciled value. The opinion of value is unchanged."

How to respond to any revision request

A few rules that work for almost every request:

1. Read it twice. Make sure you know what's being asked, and whether it's already answered.
2. Fix real errors immediately and say so. "Corrected year built to 1987, page 1." No apologies or essays.
3. Point to existing answers. "Addressed on page 3, Sales Comparison comments, paragraph 2."
4. Keep your tone neutral. The reviewer is usually clearing a checklist, not attacking you.
5. Keep everything in the workfile. The request, your response and the revised report. USPAP's Record Keeping Rule requires keeping your workfile at least five years after preparation, or at least two years after final disposition of a judicial proceeding in which you testified, whichever is later.
6. Build your library. When you write a good response, save it. Next time it's a paste and an edit.

Prevention beats response

The cheapest revision is the one that never comes. That means two habits: answering the predictable questions in the report, and checking it against the GSE rules before you deliver. Under UAD 3.6, the second part matters even more: Appendix H-1 lists 728 compliance rules, 592 of them Fatal. We break them down in the UAD 3.6 compliance rules, Fatal vs. Warning.

This is the part Carat was built for. Its AI-powered readiness checks run hundreds of the H-1 rules while you work, and each finding links straight to the field, so you can catch it before the AMC does. It also keeps your license and E&O exhibits current from your firm profile on every report. More on how it works in how AI catches AMC revision requests before you deliver. Carat never changes your conclusions or writes your commentary. You sign. It's always your report.

Revisions won't disappear. But a lot of them can become a two-minute paste instead of a ruined evening. If you want to try the checks on a real report, create an Carat account.