There are two separate ways to challenge a low appraisal, and they are different assignments. An appraisal review examines the existing report for compliance with the Uniform Standards of Professional Appraisal Practice (USPAP), comparable selection, adjustment support and factual accuracy, and states its findings against the specific data. A new independent appraisal develops its own opinion of market value from scratch. Neither one is a request for a particular number, and either may end up supporting the original report.
If the appraisal was ordered by a lender for a loan, there is also a third route that runs through the lender, the reconsideration of value. This article explains all three, when each fits, and what evidence actually helps.
What is a reconsideration of value?
A reconsideration of value, or ROV, is the lender's route. Federal banking regulators defined it in 2024 guidance as a request from a financial institution to the appraiser or other preparer of the valuation report to reassess the report based on potential deficiencies or other information that may affect the value conclusion.
Two points follow from that definition. First, only the lender can send the request to the original appraiser; the borrower asks the lender, and the lender decides whether to forward it. Second, the request is for reassessment, not for a different number. The appraiser considers the new information and either revises the report with an explanation or explains why it stands.
For loans sold to Fannie Mae, the lender must give the borrower a disclosure explaining the ROV process when the appraisal is provided. Fannie Mae's Selling Guide allows one borrower-initiated ROV per appraisal, asks the borrower to identify the areas believed to be deficient with supporting data, limits submitted comparable sales to a maximum of five, and does not allow a borrower ROV after the loan has closed. Lenders such as Chase describe the same process in their borrower guidance.
What evidence helps a reconsideration of value?
Specific, checkable facts help. General disagreement does not.
- Factual errors in the report. Gross living area, the finished space above grade, measured wrong; a bedroom or bathroom missed; a condition rating that does not match recent documented work; a lot size taken from the wrong parcel.
- Comparable sales the report missed. Closed sales that are similar in size, age, condition and location and that sold within the report's time frame, with a short note on why each is comparable.
- Sales used across a boundary without explanation. A comparable taken from the other side of the 10 or the 210, or from across the Los Angeles/San Bernardino county line, where the report does not explain why that location is equivalent.
Pending listings, asking prices, an automated estimate such as a Zestimate or other AVM, an agent's CMA, the county's assessed value, or a cash offer are not evidence of market value in this sense. None of them is an appraisal.
When does a review fit, and when does a new appraisal fit?
Situation | Appraisal review | New appraisal |
|---|---|---|
You believe the report contains factual errors or weak comparable choices | Fits: the review documents the problems against the data | Possible, but the review addresses the report directly |
A lender's ROV is being prepared and needs support | Fits: findings can be organized for the borrower to submit | Usually not; the lender decides whether a second appraisal is considered |
You need your own value opinion for a filing, a court or a trust | Not enough on its own | Fits: it develops an independent opinion for its intended use |
The property has changed since the original effective date | Limited | Fits, with a current effective date |
You want to know whether the original report is credible before deciding what to do | Fits | More than you need |
Two definitions matter here. Intended use is what the report will be used for, and intended users are the people entitled to rely on it. A review ordered by a homeowner is written for that homeowner's use; it does not become part of the lender's file unless the lender accepts it.
What does a reviewer check?
An appraisal review, the act of developing an opinion about the quality of another appraiser's work, follows its own USPAP standard. The appraisal review and second opinion service works through the report in this order:
- Facts about the subject. Gross living area, room counts, lot size, year built, condition and quality ratings, permitted additions and ADUs, against records and any documents you supply.
- Comparable selection. Whether the sales chosen are the ones a buyer of this house would have weighed, and whether better sales existed within the time frame and market area.
- Adjustment support. Whether each adjustment for size, condition, location, view or features is explained and supported by market evidence, or applied without support.
- Reasoning and reconciliation. Whether the final opinion follows from the analysis the report shows.
- USPAP compliance. Whether the report states its intended use, intended users, effective date and scope of work, the type and extent of research and analysis, and whether the work matches that scope.
The findings reference the specific data. A review does not advocate for anyone, and it may conclude that the original report is well supported.
Where do low appraisals tend to go wrong around Claremont?
These are the kinds of files that come in, and the patterns a reviewer looks for.
- Comparables pulled across Mills Avenue. Mills Avenue is the western boundary of Montclair, and Claremont sits on the Los Angeles County side. A report that uses a Montclair sale to value a Claremont house, or the reverse, needs to explain why that sale reflects the same buyer pool and assessor records. What the county line does to comparable sales explains why the boundary matters, and the Montclair area page describes that side of it.
- Comparables across the 10 or the 210. A sale on the far side of either highway can sit in a different neighborhood in every way that buyers notice. Using one is not wrong by itself; using one without explanation is a question a reviewer raises.
- A Claraboya hillside home compared with flat tracts. View, lot slope, access and custom construction set foothill homes apart. A report that relies on flat tract sales without adjusting for those differences is a common review finding.
- A Village Craftsman compared by bedroom count alone. An early bungalow near the Claremont Village differs from a later house with the same bedroom count in lot, gross living area, updating and location. Matching on bedrooms and ignoring the rest produces weak comparables. The Claremont area page describes how these pockets behave as separate markets.
What should a homeowner gather?
Assemble the file before asking anyone for help.
- The full appraisal report, including the sketch, photographs and addenda, not only the summary page.
- Permits and final sign-offs for additions, remodels, ADUs, solar or pools.
- A list of improvements with dates: roof, windows, HVAC, kitchen, baths, foundation, sewer.
- Any survey or plot plan showing the lot.
- Closed sales you believe are comparable, with the reason for each. Listings and estimates can go on a separate list for context but are not evidence.
- The lender's ROV disclosure and any deadline or form it specifies, if this is a loan.
What should you not expect?
No reviewer or appraiser advocates for either party. An appraisal review states whether the existing report is supported; it is not advocacy and it is not negotiation. A new appraisal develops its own opinion from closed sales, and that opinion may land at, above or below the original. The fee is set by the scope of the assignment and quoted before work begins, and the fee does not depend on the value.
Whether a lender reconsiders, orders a second appraisal or proceeds is the lender's decision.
Next step
If you have a low appraisal and want to know whether it holds up, send the report and the address through appraisal review and second opinion, or call (909) 324-6122. We will discuss whether a review or a new appraisal fits before any work begins.
Sources
- Board of Governors of the Federal Reserve System, SR 24-3 / CA 24-4, Interagency Guidance on Reconsiderations of Value of Residential Real Estate Valuations (July 18, 2024): https://www.federalreserve.gov/supervisionreg/srletters/SR2403.htm (accessed 2026-09-28)
- Federal Register, Interagency Guidance on Reconsiderations of Value of Residential Real Estate Valuations: https://www.federalregister.gov/documents/2024/07/26/2024-16200/interagency-guidance-on-reconsiderations-of-value-of-residential-real-estate-valuations (accessed 2026-09-28)
- Fannie Mae Selling Guide B4-1.3-12, Appraisal Quality Matters: https://selling-guide.fanniemae.com/sel/b4-1.3-12/appraisal-quality-matters (accessed 2026-09-28)
- Chase, how to dispute a low home appraisal: https://www.chase.com/personal/mortgage/education/financing-a-home/how-to-dispute-a-low-home-appraisal (accessed 2026-09-28)
- The Appraisal Foundation, Uniform Standards of Professional Appraisal Practice (USPAP): https://appraisalfoundation.org/imis/TAF/Standards/Appraisal_Standards/Uniform_Standards_of_Professional_Appraisal_Practice/TAF/USPAP.aspx (accessed 2026-09-28)
- Montclair, California (Mills Avenue as the western boundary): https://en.wikipedia.org/wiki/Montclair,_California (accessed 2026-09-28)
- Claremont, California (Los Angeles County; borders Upland and Montclair): https://en.wikipedia.org/wiki/Claremont,_California (accessed 2026-09-28)
Gordon Hall, California Certified Residential Real Estate Appraiser, BREA No. AR003877 (lookup: https://www2.brea.ca.gov/breasearch/faces/party/view.xhtml?id=23601). Reports are prepared in conformity with the Uniform Standards of Professional Appraisal Practice (USPAP). Nothing here is legal or tax advice; admissibility is always the court's decision.
Frequently asked questions
Can I call the original appraiser directly?
For a lender appraisal, the lender is the appraiser's client, so questions about the report go through the lender. That separation protects the appraiser's independence, and it is why the ROV runs through the lender.
How many times can I ask for a reconsideration?
For loans sold to Fannie Mae, one borrower-initiated ROV is permitted per appraisal. Other loan programs and lenders set their own policies, so ask your lender.
Will an appraisal review give me a new value?
Not necessarily. A review assesses the quality of the existing report. If a value opinion is needed, a new appraisal is the assignment that provides one, and you can order an appraisal with that scope.
What if the review supports the original appraisal?
Then you know the report is credible, which is useful in deciding whether to renegotiate, add funds, or change course. See the frequently asked questions for how assignments are scoped.