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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteYour property value may have decreased because recent comparable homes sold for less, local market conditions changed, or your home’s condition or features compare less favorably with nearby properties. A lower figure can also reflect a different valuation method or date—not a confirmed drop in what your home would sell for today. First identify which number changed: an online estimate, lender appraisal, tax assessment, asking price, or completed sale.
What does “property value” mean in your case?
Different figures can describe different things. A completed sale records the price a buyer and seller agreed on. A lender appraisal is an opinion of value used in a mortgage process. An online estimate, asking price, and tax assessment each have their own purpose, data, method, and date. The Consumer Financial Protection Bureau explains that mortgage-process valuations can vary and may use local sales information and home facts such as square footage, bedrooms, bathrooms, and year built (CFPB: Why did I receive different valuations during the mortgage loan application process?).
So a lower online estimate or tax assessment does not by itself prove that your likely sale price has fallen by the same amount. Compare the valuation type and its effective date before interpreting the change.
Why might a home’s value fall?
Recent comparable sales are lower
Appraisals commonly use recent sales of competitive properties, adjusting for differences such as size, condition, and location. If comparable homes in your market area have sold for less, those sales may support a lower estimate. Fannie Mae says sales in the immediate market area are generally the best indicators because they reflect location-specific advantages and disadvantages (Fannie Mae: Comparable Sales).
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Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →The comparison is local and property-specific: a national housing trend does not establish that every home in a neighborhood, or every home in the country, has changed in value by the same amount. FHFA notes that comparable-sales data can be sparse, spread across sources, or observed with a lag, which can make recent market shifts harder to capture (FHFA: Appraisal Timing and the Valuation of Single-Family Homes).
Market conditions changed between sales and the valuation date
Demand, financing conditions, or other local market changes can alter what buyers are willing to pay. An appraisal draws on sales that happened earlier, so fast-moving markets can make older evidence less representative of conditions on the valuation date.
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FHFA reported in 2024 that appraisals came in below contract price in 7% to 9% of transactions annually from 2013 through 2020, rising to 15% in 2021 and 12% in 2022 before returning to more typical levels in early 2023. Those are historical national figures, not a current rate or a prediction about an individual home (FHFA: Appraisal Timing and the Valuation of Single-Family Homes).
Your home’s condition, size, or features compare differently
Appraisers consider factors including size, design, bedrooms and bathrooms, structural quality, maintenance, landscaping, and overall condition. Deferred maintenance or deterioration can affect how a home compares with similar sales. Freddie Mac gives leaky faucets, flickering lights, and insecure stair railings as examples of minor issues that can affect a condition rating (Freddie Mac: What Happens When an Appraisal Comes in Low?).
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Not every small repair changes market value, and cosmetic work does not guarantee a particular appraisal increase. The relevant question is whether the property’s condition and features differ meaningfully from those of the homes used for comparison.
Location, lot, or neighborhood factors shifted
Location, lot size, views, and neighborhood sales can influence value even when the house itself has not changed. Nearby foreclosures or short sales may be relevant evidence, but one distressed sale does not automatically determine the value of a different home. The appraiser should consider how those properties compare with yours and account for material differences (Freddie Mac: What Happens When an Appraisal Comes in Low?).
The comparable properties or timing may not fit well
An appraiser selects comparable properties and adjusts for differences before reaching a value opinion. Sales should compete with the home being valued and, where possible, come from the same market area. If the selected properties are materially different, unusually old, or outside the relevant market area, it is reasonable to ask how they support the estimate.
FHFA’s 2024 analysis found that more than two-thirds of Enterprise-backed mortgage appraisals in its 2013–2021 data included at least five comparable properties; the share fell from 76% in 2013 to 59% in 2021. That dataset and its appraisal context do not establish that a particular report with fewer comparables is wrong (FHFA: Appraisal Timing and the Valuation of Single-Family Homes).
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How to check what changed
- Identify the valuation and date. Note whether the lower figure is an online estimate, lender appraisal, tax assessment, asking price, or completed sale, and find the date it applies to.
- Get the lender report if applicable. In covered mortgage applications, borrowers are entitled to copies of lender-obtained appraisals and other opinions of value. The CFPB explains this right and the role of those valuations (CFPB: Can I get a copy of the appraisal my lender obtained?).
- Check the property facts. Compare the report’s square footage, room count, condition, and features with the actual property. Errors or omissions can affect the comparison.
- Review the comparable sales. Look for meaningful differences in location, size, condition, or sale timing, and note any facts that appear inaccurate or unexplained.
- Ask the lender about reconsideration if the appraisal appears inaccurate. A borrower can raise factual errors or omissions, unsuitable comparables, or possible prohibited bias and provide relevant supporting information. The CFPB describes reconsideration of value as a route to raise concerns, not a guarantee that the value will change (CFPB: What is a reconsideration of value?).
- For a tax assessment, contact the local assessor or taxing authority. Ask for the assessment record and the applicable review or appeal deadline. Procedures and deadlines vary by jurisdiction, so there is no single nationwide appeal window.
Why a tax assessment is not necessarily your market sale price
Property-tax assessments are governed by local rules, which vary by jurisdiction. A federal IRS explanation of fair market value for gift-tax purposes uses a willing-buyer/willing-seller concept and says comparable sales may need adjustments for sale date, size, condition, and location when there is no arm’s-length sale. That guidance applies to its federal tax context; it does not establish how a local assessor must value property (IRS Publication 561: Determining the Value of Donated Property).
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