When someone inherits a home, its value on the date of the previous owner's death may become important long before—or even years after—the property is sold.
For many families, the immediate focus is on managing the estate, maintaining the property, or deciding whether to keep or sell it. Documenting the home's historical value may not seem urgent.
However, that value can become an important part of the financial records associated with inherited real estate, particularly when a CPA is determining the property's tax basis.
A retrospective real estate appraisal can provide an independent, supported opinion of the property's fair market value as of the relevant historical date.
Understanding the Difference Between Property Value and Tax Basis
A property's market value and its tax basis are related concepts, but they are not the same thing.
Fair market value generally represents the price at which property would change hands between a willing buyer and a willing seller, neither under compulsion and both reasonably informed about the relevant facts.
Tax basis is a figure used in determining the tax consequences of certain transactions, including the sale of property.
For a home purchased by its owner, the initial basis commonly begins with the purchase price and may be adjusted for certain improvements, expenses, and other factors.
Inherited property is different.
Under Section 1014 of the Internal Revenue Code, the basis of property acquired from a decedent is generally related to its fair market value at the date of death, subject to exceptions and special rules.
This is sometimes referred to as a step-up in basis, although the applicable adjustment can also result in a lower basis when a property's value has declined.
The appraiser determines an opinion of the real estate's value. The CPA determines how the applicable tax rules affect the property's basis.
Why the Date-of-Death Value Can Affect a Later Sale
Consider a simplified example involving an inherited residence in Metro Atlanta.
A homeowner purchased a property many years ago for $175,000. At the time of the homeowner's death, the property had an estimated fair market value of $425,000.
Several years later, the heirs sold the property for $475,000.
Those three figures represent different things:
$175,000: The original purchase price.
$425,000: The assumed fair market value at the date of death.
$475,000: The later selling price.
If the applicable inherited-property basis rules use the date-of-death value, the $425,000 figure may be an important starting point for the CPA's calculation.
The difference between the date-of-death value and the later sale price may be substantially different from the difference between the original purchase price and the sale price.
Actual tax calculations can also involve selling expenses, adjustments to basis, applicable elections, and other circumstances.
The important appraisal question is narrower: What was the property worth on the relevant historical date?
A properly developed retrospective appraisal can help answer that question with independent market analysis.
This example is illustrative only and does not calculate taxable gain or establish the basis applicable to a particular taxpayer.
Is an Appraisal Required to Establish the Basis of Inherited Property?
Not every inherited property requires a formal appraisal.
The applicable tax rules determine how basis is calculated, and the documentation needed to support that calculation depends on the circumstances.
An appraisal may be particularly helpful when the property's historical value is uncertain, when substantial time has passed since the owner's death, or when the valuation could have a material financial impact.
For example, a CPA may recommend obtaining an independent appraisal when:
The inherited property is being sold and no reliable historical valuation is available.
The date of death occurred several years earlier.
The property has unusual characteristics that make its value difficult to estimate.
Significant renovations occurred after the date of death.
Existing estimates or records produce conflicting values.
The value may need to be explained or supported during a future review.
The decision to obtain an appraisal should be made in the context of the client's specific needs and the advice of the relevant tax or legal professional.
Why a Later Selling Price May Not Establish Historical Value
A common assumption is that the price received when an inherited property sells provides sufficient evidence of what the home was worth when the previous owner died.
A sale can certainly provide useful market information, particularly when it occurs close to the relevant valuation date and reflects an arm's-length transaction.
However, the selling price does not automatically establish fair market value at an earlier date.
Residential markets change over time. Interest rates, housing inventory, buyer demand, and neighborhood conditions can all influence property values.
The property itself may also change.
A home sold in 2026 may have received a new roof, renovated kitchen, or substantial repairs after its owner died in 2023. Conversely, the property may have experienced deterioration or deferred maintenance during that period.
An appraiser developing a retrospective valuation must consider the property's condition and the market circumstances associated with the historical effective date.
The later sale may be relevant evidence, but it must be evaluated rather than automatically substituted for the earlier value.
Can a County Tax Assessment Be Used Instead?
Georgia county property tax records can provide useful historical information about a residence, including recorded characteristics, assessed values, and certain property details.
However, a county's property tax assessment and an independent appraisal prepared for inherited-property valuation purposes are not necessarily equivalent.
The assessment may reflect a different valuation date, assessment methodology, or set of property information.
A county assessment should therefore not automatically be assumed to establish the fair market value required for a particular federal tax purpose.
When the historical value is important and uncertainty exists, an independent retrospective appraisal may provide a more detailed, property-specific analysis.
What If the Property Was Inherited Years Ago?
A retrospective appraisal can often be completed years after the date of death.
The appraiser researches market activity from the relevant historical period and considers available evidence of the property's characteristics and condition at that time.
Useful records may include previous real estate listings, dated photographs, renovation records, building permits, inspection reports, and prior appraisals.
The availability and reliability of this information can affect the scope of the assignment.
For example, if a home has been extensively renovated since the date of death, the appraiser may need additional documentation to understand which improvements existed at the earlier date.
A current inspection may still provide useful information, but it cannot by itself establish every aspect of the property's historical condition.
How an Appraisal Supports a CPA's Work
CPAs and residential appraisers have different but complementary responsibilities.
The CPA evaluates the client's tax circumstances, identifies the applicable basis rules, and determines the appropriate reporting treatment.
The appraiser develops an independent opinion of the property's value as of the requested effective date, using relevant market evidence and an appropriate scope of work.
A retrospective appraisal report can provide documentation of the property interest valued, the effective date, the valuation analysis, relevant assumptions, and the final opinion of value.
That information may help a CPA understand and document the real estate valuation used in the client's records.
An appraisal does not guarantee acceptance of a particular tax position, determine the final adjusted basis, or replace professional tax advice.
Its value is in providing a credible and supportable real estate valuation.
When Should the Historical Value Be Documented?
Ideally, the need for a historical valuation is considered while estate records and information about the property's condition are readily available.
That does not mean an appraisal must always be ordered immediately after a death.
It does mean that preserving relevant property records can make a future valuation easier.
Photographs, prior listing information, renovation documentation, and records of major repairs may become valuable if the property is sold years later and its historical value needs to be established.
For CPAs, attorneys, and executors, identifying potential valuation needs early can help prevent unnecessary difficulty when those records are no longer readily available.
Independent Valuation for Inherited Real Estate in Metro Atlanta
Trusted Values Real Estate Appraisal Services provides independent residential appraisals for estate-related and retrospective valuation needs throughout the Metro Atlanta area.
Our role is to develop a credible opinion of real estate value as of the appropriate effective date, supported by relevant property information and market analysis.
We work with property owners, executors, CPAs, and attorneys to identify the purpose of the assignment and determine an appropriate appraisal scope.
If you need a historical residential property valuation for inherited-property documentation or another estate-related purpose, contact Trusted Values to discuss the property, effective date, and intended use.
Learn more about estate and retrospective appraisal services at TrustedValues.com.
This article is intended for general educational purposes and does not constitute tax or legal advice. The basis and tax treatment of inherited property depend on applicable law and individual circumstances. Consult a qualified CPA or attorney regarding specific tax or estate matters.