20 Home Appraisal Pitfalls: Condition, Records, and Comparables

By Joseph T Ellington Jr – Licensed Residential Appraiser, Capital Valuations. Updated September 2026.

20 appraisal pitfalls: separate property issues from information errors

An appraisal is an opinion of value for a defined property, date, and intended use. There is no universal list of 20 mistakes that always lowers a home’s value, and a tidy house does not guarantee a higher figure. Some of the issues below may affect marketability or lender requirements; others may cause a report to describe the property inaccurately. Their effects vary by assignment and local market. For a focused repair decision guide, see what to fix before an appraisal.

Condition and completion: items 1–5

1. Unfinished renovation: Show what is complete, what remains, and any relevant permits; do not describe a project as finished prematurely.
2. Active water intrusion: Document the source, repairs, and current condition rather than concealing a leak.
3. Deferred structural repairs: Disclose known issues and provide specialist reports if available; an appraiser does not replace an engineer.
4. Nonworking major systems: Describe the actual status of heating, electrical, and plumbing and any scheduled repair.
5. Exterior deterioration: Maintain roofs, siding, steps, and drainage for safety and preservation; market reaction depends on evidence.

For conventional loans, Fannie Mae says reports should reflect apparent or discovered adverse conditions and needed repairs. Some conditions may require further review or completion verification under the lender’s requirements. An appraiser observes and reports within the assignment scope; a home inspection investigates different concerns.

Property facts and records: items 6–10

6. Incorrect living-area figure: Compare measurement records and identify the basis of each figure; see the ANSI measurement guide.
7. Basement counted as above-grade living area: Distinguish the categories required by the assignment, including relevant Fannie Mae guidance.
8. Unverified addition: Share permits, plans, and completion documents where available rather than assuming an assessor’s number is current.
9. Misstated bedroom or bathroom count: Clarify layout and use; legal and reporting definitions may differ by jurisdiction or lender.
10. Missing information about easements or access: Provide survey or title documents when relevant; consult a qualified professional for legal interpretation.

Prepare a concise property information packet. The appraiser independently verifies facts within the assignment scope; owner documents help identify discrepancies.

Market comparisons: items 11–15

11. Assuming asking price equals value: A listing is an offer; closed sales, current offerings, and market conditions need analysis.
12. Using unlike comparables: A renovated waterfront sale may tell little about an inland home in different condition.
13. Ignoring contract and sale dates: Conditions can change between a comparable’s contract and the appraisal’s effective date.
14. Using price per square foot as the whole method: Differences in lot, layout, condition, location, and amenities remain; read how area adjustments work.
15. Claiming renovation cost equals value added: Buyer reaction and supported comparisons, rather than receipts alone, inform an adjustment.

Fannie Mae’s sales-comparison guidance calls for analysis of the most comparable sales, contracts, and listings. See how appraisers choose comparable sales for the selection process, and our guide to sale data and verification for the sources behind them.

Communication and review: items 16–20

16. Blocking access to relevant spaces: Arrange safe access to rooms and features included in the assignment; tell the appraiser about inaccessible areas.
17. Leaving improvements undocumented: Supply dates, scope, and permits where available without assigning your own value premium.
18. Concealing known deficiencies: Honest condition information reduces the risk of factual mistakes and follow-up.
19. Pressuring the appraiser toward a target number: Share verifiable facts, not a requested outcome; lender appraisal independence rules apply.
20. Ignoring a specific report error: For a lender appraisal, contact the lender with the address, factual correction, supporting record, and any relevant comparable sales through its reconsideration-of-value process.

The CFPB explains how borrowers can challenge inaccurate appraisals. For a private Hampton Roads appraisal, contact Capital Valuations with your property and intended use.