Appraisal Review Best Practices: What Every Lender Should Check
7/15/2026
Most appraisal review consists of confirming that the value equals or exceeds the number the file needs. That is not a review. It is a check on one field, and it misses everything the appraisal was ordered to establish.
A proper review answers a harder question: is this value supported? An appraisal can reach a number the transaction requires through comparable selection and adjustments that do not hold up, and the institution that accepted it holds a loan secured by less collateral than it believes.
This post covers residential and small commercial appraisal review at the level a lender's staff performs it. It complements our mortgage underwriting post, where the appraisal is one input among several.
Two Separate Reviews
Institutions conflate these, and separating them clarifies who should do what.
The compliance and completeness review confirms the appraisal is the right product, properly assigned, and complete: the correct form for the property and transaction type, the appraiser licensed and in good standing for that property in that state, the assignment independent of the loan production function, the effective date current enough for the transaction, the required exhibits and photographs present, the intended user and intended use stated correctly, and the client identified as the institution. This work is procedural, and trained operations staff can perform it.
The valuation review assesses whether the value conclusion is credible. It requires someone with enough competency to read comparable selection, adjustments, and reconciliation critically. This is where the actual risk lives, and where thin institutional capability shows up as accepted appraisals nobody genuinely evaluated.
Both are required. Supervisory expectations contemplate that institutions have an appraisal review program appropriate to their size and the risk of their real estate lending, and that reviewers are independent of the transaction and competent to perform the review.
What Is Required: Appraisal or Evaluation
Before reviewing, confirm the institution ordered the right thing.
The interagency appraisal regulations require an appraisal by a state-licensed or certified appraiser for federally related transactions above stated dollar thresholds, with separate thresholds for residential and commercial transactions, and with several defined exemptions. Below the thresholds, and in certain exempt situations, an evaluation is permitted — a written estimate of market value that need not be prepared by a licensed appraiser but must still be independent, documented, and sufficient to support the credit decision.
Two recurring errors here. Treating an evaluation as an informal exercise, when supervisory guidance sets real content expectations for it. And relying on a transaction-type exemption without documenting which exemption applies and why.
Automated valuation models are subject to their own interagency quality control standards addressing accuracy, data integrity, protection against manipulation, random sample testing, and compliance with nondiscrimination law. An institution using AVMs — for evaluations, for portfolio monitoring, or in the review process itself — needs a documented quality control framework around them rather than reliance on the vendor's assurances. This connects directly to the model risk discipline covered in our model risk management post: an AVM is a model.
Appraiser Independence
The rules exist because the incentives run the wrong way, and violations are usually casual rather than corrupt.
Prohibited conduct includes coercing, influencing, or otherwise encouraging an appraiser to reach a particular value; withholding payment because a value came in low; and conditioning future assignments on values. Selection and engagement must be independent of loan production, which means the loan officer does not choose the appraiser and does not communicate with the appraiser about value.
What is permitted: asking the appraiser to consider additional information, correct factual errors, or provide further explanation. The distinction between "the borrower believes these two additional sales are relevant, please consider them" and "we need $340,000" is the entire rule, and staff who have never had it explained cross it in an ordinary email.
Two operational safeguards. Route all appraiser communication through a function outside production, and keep it in writing. And train loan officers specifically on what they may not say, because the violation almost always originates with someone trying to be helpful.
The Valuation Review: What to Actually Examine
The reviewer's job is to follow the appraiser's reasoning and identify where it is weak. In rough order of how often problems appear:
Comparable selection. The most informative part of any appraisal. Are the comparables genuinely comparable in location, site, size, age, style, condition, and appeal? Are they in the same market area and same school district where that matters? How far away are they, and does the distance make sense for this market? How recent are the sales? Where a comparable is materially different from the subject or unusually distant, the appraiser should explain the choice — and the absence of an explanation is itself a finding.
The question worth asking: are there obviously better comparables that were not used? A reviewer with access to the same data who finds closer, more recent, more similar sales that were omitted has found the most common form of unsupported value.
Adjustments. Each adjustment should be supported, and the support should be something better than the appraiser's judgment asserted. Look at the magnitude of individual adjustments, the net and gross adjustment totals, and whether large adjustments cluster in a way that drags the comparables toward a predetermined conclusion. Adjustments that all run in the same direction, or that are large relative to the sale prices, are a signal to read more carefully.
The three approaches and the reconciliation. For residential, the sales comparison approach usually drives the conclusion, with the cost approach as a check and the income approach where applicable. What matters is the reconciliation — the appraiser's explanation of how the conclusion follows from the analysis. A conclusion that lands outside the range of adjusted comparable values, or at a convenient number with no reasoning, needs explanation.
Market conditions. Is the analysis of the local market — inventory, days on market, price trends, concessions — consistent with the value conclusion? An appraisal describing a declining market and concluding a value at the top of the adjusted range has an internal contradiction.
Sales and financing concessions, which should be identified and adjusted for. Unadjusted concessions inflate comparable prices.
Listing and sale history of the subject. The subject's own prior sales and current or recent listing history are among the most revealing fields in the report. A property that recently sold for materially less, or that has been listed for months below the appraised value, raises questions the appraisal should address.
Condition and quality ratings, and whether they are consistent with the photographs and the description. A property rated in good condition with photographs showing deferred maintenance is an internal inconsistency worth resolving.
Gross living area and room count, compared against public records and the sketch. Discrepancies here move value directly.
"Subject to" conditions, extraordinary assumptions, and hypothetical conditions. An appraisal completed subject to repairs or subject to completion is not an as-is value, and files close on the wrong basis with some regularity.
Photographs and exhibits, read rather than skimmed. The photographs frequently contradict the narrative.
Appraisal Bias and Reconsideration of Value
This has become a specific area of supervisory attention, and institutions need a defined process rather than an ad hoc one.
Two obligations run together. Valuation discrimination — a value influenced by the race, national origin, or other protected characteristic of the applicant or of the neighborhood's residents — implicates fair lending law and the Fair Housing Act. And the institution's own review process has to be capable of detecting it.
Practical elements of a defensible approach:
A documented reconsideration of value process available to applicants, with clear information about how to request one, what information to submit, who reviews it, and what the outcome will be. The agencies have addressed ROV expectations, and an institution with no defined process is exposed regardless of whether any individual appraisal was problematic.
Reviewers trained to notice subjective language describing neighborhoods or occupants, market area definitions that follow demographic rather than market lines, and comparable selection that crosses or avoids boundaries without an economic explanation.
Tracking and analysis of ROV requests and their outcomes, and of value revisions, since the pattern across files is more informative than any single case.
Independence in the ROV review itself, so the person reconsidering is not the person whose decision is being reconsidered.
Structured coverage is available through the Appraisal Review Workshop, the Certificate in Mortgage Lending Compliance, the Certificate in Lending Compliance Core Concepts, and Basics of Residential Mortgage Lending.
Escalation: What to Do With a Problem
Finding a weakness is only useful if there is a defined next step, and the options escalate.
Ask for clarification or correction where the issue is factual or unexplained. This is permitted and routine.
Order a desk review or field review by another appraiser where the concern is about the value conclusion itself.
Order a second appraisal where the review cannot resolve the question. Note that the institution may not simply select whichever of two appraisals it prefers — the basis for relying on one over the other has to be documented and defensible.
Decline to rely on the appraisal, which is the option institutions are most reluctant to exercise and occasionally the correct one.
What is not acceptable: accepting an appraisal the reviewer identified as unsupported because the transaction needs it, or resolving the concern verbally and leaving no record. The review has to be documented — who performed it, what was examined, what was found, and how any concern was resolved. An undocumented review, however competent, is indistinguishable from no review when an examiner asks.
Where Review Programs Fail
Review consists of confirming the value meets the need, with nothing else examined.
No competency behind the valuation review, so the substantive assessment is nominal.
The reviewer is not independent of the transaction or reports to production.
Findings are not documented, or are resolved in a phone call.
No reconsideration of value process, or one that exists in policy and is not communicated to applicants.
AVMs used without a quality control framework, treated as a data feed rather than as a model.
"Subject to" appraisals treated as as-is values.
No tracking across appraisals — no view of which appraisers' work generates findings, which markets produce repeated value questions, or how ROV outcomes distribute.
The unifying failure is that appraisal review gets structured as a document-completeness task assigned to whoever has capacity, when the risk it addresses is a valuation judgment requiring someone competent enough to disagree with a professional. Institutions that build that capability find the second thing worth having: reviewers who can tell the difference between an appraisal they dislike and an appraisal that is wrong.
Frequently Asked Questions
What should an appraisal review actually examine?
Two separate reviews. A compliance and completeness review confirming the right product, a licensed appraiser, independent assignment, a current effective date, and required exhibits. And a valuation review assessing whether the value is supported — comparable selection, adjustment support and magnitude, the reconciliation, market conditions consistency, concessions, the subject's own listing and sale history, condition and quality ratings against the photographs, and gross living area against records.
What is the most common form of unsupported value?
Comparable selection. A reviewer with access to the same data who can identify closer, more recent, or more similar sales that were omitted — with no explanation in the report for the choices made — has found the weakness that most often underlies a value that does not hold up.
What may a lender say to an appraiser?
A lender may ask the appraiser to consider additional information, correct factual errors, or explain the analysis further. It may not coerce or encourage a particular value, withhold payment because a value came in low, or condition future assignments on values. Appraiser selection must be independent of loan production, and violations usually originate with someone trying to be helpful rather than with intent.
When is an evaluation acceptable instead of an appraisal?
Below the applicable dollar thresholds in the interagency appraisal regulations and in certain defined exempt transactions. An evaluation need not be prepared by a licensed appraiser but must still be independent, documented, and sufficient to support the credit decision — and the exemption relied upon should be identified in the file rather than assumed.
What is a reconsideration of value process?
A defined process by which an applicant can request that a valuation be reconsidered, with clear information on how to request it, what to submit, who reviews it, and what happens next. Supervisory attention to valuation bias makes having a documented, communicated, and independently staffed ROV process an expectation rather than an option, and outcomes should be tracked and analyzed across files.
Do automated valuation models need to be validated?
Yes. AVMs are subject to interagency quality control standards addressing accuracy, data integrity, protection against manipulation, random sample testing, and nondiscrimination compliance. An AVM is a model, so it belongs in the institution's model inventory with a documented quality control framework rather than being treated as a vendor data feed.
