KO Appraisal
Guide

Retrospective appraisal

A retrospective appraisal establishes value as of an effective date in the past. Estates, divorce matters, tax appeals, and litigation all routinely need one, and it is a genuinely different exercise from valuing a property today.

What changes when the date is in the past

The appraiser develops value from data that existed as of the effective date. Comparable sales must have closed on or before it. Market conditions, financing terms, and the property’s physical condition are all assessed as they stood then, not as they stand now.

What makes it demanding is discipline about hindsight. It is easy to let knowledge of what the market subsequently did contaminate an opinion of what it was on a past date. A well-supported retrospective report shows its reasoning clearly enough that a reviewer can see that did not happen.

When you need one

The common triggers:

  • Estate settlement: value as of the date of death, or the §2032 alternate date.
  • Divorce: California may require value at date of separation, at trial, or both.
  • Property tax appeal: value as of the January 1 lien date for the year under appeal.
  • Litigation: value at the date of an alleged loss, breach, or taking.
  • Casualty loss: value immediately before and after the event.

If the property has since changed

Property is frequently sold, renovated, or demolished before the appraisal is ordered. That does not prevent the assignment. The appraiser establishes condition as of the effective date from photographs, permits, listing records, and interviews, then discloses the extent of the limitation in the report. Being explicit about it is what keeps the report credible.

Common questions

How far back can a retrospective appraisal go?
There is no fixed limit. What governs is whether sufficient data exists to support a credible opinion as of that date. Older dates require more reconstruction and generally more time.
Is it less reliable than a current appraisal?
Not inherently. It relies on closed transactions, which are known facts, rather than on a forecast. What matters is data availability and the discipline to exclude hindsight.
Can I get one if I no longer own the property?
Yes. It is common in estate and litigation work for the subject to have already been sold.
Who wrote this Kevin O'Brien, MAI, SRA. California Certified General Real Estate Appraiser #3005065, issued by the California Bureau of Real Estate Appraisers (BREA). Practicing in San Diego. This page reflects how these assignments are actually handled, not a summary of other people's summaries.
Where this applies Appraiser licensing is state-specific, there is no national appraisal licence, so appraisal engagements here are California properties, primarily San Diego County. The valuation methodology and the federal tax rules described above apply anywhere in the United States; if your property is in another state, you need an appraiser credentialed there, and this page should still tell you what to ask them for.

Related reading

Next step

Tell me about the property.

Most assignments start with a short call, property type, the purpose of the appraisal, and the deadline you are working against. You get a fixed quote before any engagement, never contingent on the value reached.

Typical commercial fees range $2,000–$4,000. Residential and simpler assignments quote lower. Every engagement is quoted in advance, so the figure is known before work begins.

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