What is a retrospective appraisal?
A retrospective appraisal determines the fair market value of a property as of a specific date in the past, rather than today. The appraiser uses only market data, comparable sales, and public records that were available on that historical effective date. It is commonly used for estate settlement, divorce, capital gains, and property tax appeals.
Also called a historical appraisal, it answers a question a current valuation can't: not "what is this worth now," but "what was it worth then." That distinction matters enormously when the IRS, a probate court, or a divorce settlement turns on value as of a date that has already passed.
When do you need a retrospective appraisal?
You need a retrospective appraisal whenever value must be established as of a past date. Common reasons include estate settlement and probate as of the date of death, divorce as of the date of separation, capital gains calculations on an inherited or long-held property, and property tax assessment appeals challenging a prior valuation.
How does a retrospective appraisal work?
The appraiser sets the historical effective date, then gathers comparable sales, MLS records, and public data from that period. Under USPAP, only information known or available on that past date may be used — later sales or hindsight are excluded. The report documents the historical market value and the conditions supporting it.
- Set the effective dateWe confirm the exact past date value is needed for — date of death, separation, purchase, or assessment.
- Gather period dataArchived MLS records, closed comparable sales, and public deed and tax records from that time frame.
- Exclude hindsight (USPAP)Only what was known or knowable on the effective date is used. Sales that closed later are set aside — this is the discipline that makes the report defensible.
- Deliver the reportA USPAP-compliant report stating the historical market value and the market conditions that supported it.
Why hindsight bias is the whole game
The hardest part of a retrospective appraisal isn't finding old data — it's ignoring everything that happened after the effective date. USPAP requires the appraiser to value the property as a buyer would have seen it then, with no knowledge of later sales or market shifts. Local history is what makes that reconstruction credible: 36 years of Baltimore-area comparables is a record, not a database lookup.
Retrospective vs. current appraisal
A current appraisal reflects today's market value using recent sales. A retrospective appraisal reflects value as of a specific past date, using only data available then. The methods are the same, but the retrospective appraiser must set aside all knowledge that came after the effective date to avoid hindsight bias.
Can a retrospective appraisal be used in court?
Yes. A retrospective appraisal prepared by a state-certified appraiser under USPAP is court-admissible and regularly used in estate, probate, divorce, and tax matters. Its historical comparable sales and documented methodology give it the defensibility attorneys and courts require during settlement, litigation, or an assessment appeal.
This is the difference between a certified retrospective appraisal and an online "what was my home worth" estimate. When an executor, an attorney, or the IRS needs the number to hold, it has to be supported by a licensed appraiser who can testify to the methodology behind it.
How far back can a retrospective appraisal go?
A retrospective appraisal can value a property years or decades in the past, as long as sufficient historical market data exists for that date. Older effective dates rely on archived MLS records, public deed and sale records, and comparable transactions from the period. A certified appraiser with local history can reconstruct value reliably.