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Appraisal Knowledge Base

Real Estate Appraisal Glossary

Authoritative definitions of the key terms used in probate, estate, and divorce real estate appraisals — written by Washington State's certified appraisal specialists.

Date of Death Appraisal Fair Market Value USPAP Step-Up in Basis Retrospective Valuation Probate Litigation Support Appraisal IRS Form 706 Comparable Sales Marital Dissolution Appraisal
Estate & Probate

Date of Death Appraisal

Also: Retrospective Valuation

A certified appraisal that determines the Fair Market Value of real property as of the exact date the owner passed away. Required by the IRS for estate tax filings (Form 706) and by probate courts to ensure equitable distribution of inherited assets. Unlike a standard appraisal, the appraiser must analyze historical market conditions and comparable sales from the specific date — sometimes years in the past.

Why It Matters

Without a certified Date of Death appraisal, heirs risk IRS audits, incorrect tax filings, and loss of the step-up in basis tax benefit.

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Core Concepts

Fair Market Value (FMV)

The price at which a property would change hands between a willing buyer and a willing seller, both having reasonable knowledge of all relevant facts, and neither being under any compulsion to buy or sell. Fair Market Value is the legal standard used by the IRS, probate courts, and family law courts for all estate and divorce-related property valuations in Washington State.

Why It Matters

All IRS-accepted appraisals must establish Fair Market Value. Using current market value, Zillow estimates, or a Realtor's CMA instead of a certified FMV appraisal can result in IRS penalties.

Comparable Sales

Also: Comps

Recently sold properties that are similar in size, location, condition, age, and features to the subject property being appraised. Licensed appraisers analyze comparable sales to determine Fair Market Value using the Sales Comparison Approach. For retrospective appraisals, the comparable sales must be from the same time period as the date of death — not current sales.

Why It Matters

The quality and relevance of comparable sales directly determines the accuracy and defensibility of an appraisal. A Realtor's CMA uses similar data but lacks the forensic rigor and USPAP compliance required by courts.

Legal Standards

USPAP

Also: Uniform Standards of Professional Appraisal Practice

The Uniform Standards of Professional Appraisal Practice — the ethical and performance standards governing all licensed real estate appraisers in the United States. Established by the Appraisal Standards Board, USPAP compliance is required for appraisals submitted to the IRS, probate courts, family courts, and financial institutions. A USPAP-compliant report ensures the appraisal was conducted with independence, impartiality, and objectivity.

Why It Matters

Probate courts and the IRS will not accept appraisals that are not USPAP compliant. A Realtor's CMA or online estimate does not meet this standard.

Litigation Support Appraisal

Also: Expert Witness Appraisal

Appraisal services specifically designed to assist attorneys and their clients during legal disputes involving real property. This includes producing court-admissible appraisal reports, providing expert witness testimony, reviewing and rebutting opposing appraisals, and preparing forensic valuation analyses. A litigation support appraiser must be able to defend their methodology and conclusions under cross-examination in a court of law.

Why It Matters

Standard appraisals are not always designed to withstand legal scrutiny. A litigation support appraisal is built from the ground up to be defensible in court.

Tax & Financial

Step-Up in Basis

Also: Stepped-Up Basis

A tax provision under U.S. federal law that resets the cost basis of inherited property to its Fair Market Value on the date of the original owner's death. When heirs inherit property, their new tax basis is the Date of Death value — not the original purchase price. This dramatically reduces capital gains taxes when the property is later sold. A certified Date of Death appraisal is the legal document that establishes this stepped-up value with the IRS.

Why It Matters

Without a certified appraisal establishing the Date of Death value, heirs may be taxed on the full appreciation from the original purchase price — potentially costing hundreds of thousands of dollars.

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IRS Form 706

Also: United States Estate Tax Return

The federal tax return filed with the IRS when a decedent's gross estate exceeds the federal estate tax exemption. Form 706 requires a certified appraisal for all real property in the estate, establishing Fair Market Value as of the date of death. The appraisal must be USPAP-compliant and performed by a qualified appraiser as defined by IRS regulations.

Why It Matters

Submitting Form 706 without a certified appraisal, or with an insufficient valuation, can trigger an IRS audit or penalty. A professional Date of Death appraisal is the required documentation.

Appraisal Types

Retrospective Valuation

Also: Historical Appraisal

An appraisal that establishes the value of a property at a specific past date rather than the current date. The appraiser must go back in time to analyze the market conditions, comparable sales, and property condition as they existed on that exact date — using historical MLS records, archived data, and forensic research. Retrospective valuations are most commonly required for Date of Death appraisals, but may also be needed for litigation, tax disputes, or insurance claims.

Why It Matters

Many executors mistakenly use today's value for an estate filed months after death. The IRS and probate courts require the value as of the date of death — a retrospective valuation provides this.

Legal Process

Probate

Also: Probate Court

The legal court process through which a deceased person's estate is administered under court supervision. During probate, a judge validates the will, appoints an executor, oversees the payment of debts, and authorizes the distribution of assets to heirs. In Washington State, probate proceedings are handled by the Superior Court in the county where the deceased resided — Snohomish County Superior Court for Everett, Lynnwood, and Mukilteo; King County Superior Court for Seattle, Bellevue, and Redmond.

Why It Matters

When real estate is part of an estate, probate courts require a certified, USPAP-compliant appraisal to establish Fair Market Value before assets can be distributed.

Divorce & Family Law

Marital Dissolution Appraisal

Also: Divorce Property Appraisal

An independent, third-party property appraisal ordered during divorce or legal separation proceedings to establish an objective Fair Market Value for shared real estate. Because the appraisal is performed by a neutral licensed appraiser with no financial interest in the outcome, it provides a legally defensible value that both parties and their attorneys can rely on for equitable asset distribution. Washington State family courts accept USPAP-compliant appraisals as evidence in contested divorce proceedings.

Why It Matters

Without a neutral third-party appraisal, disputed property values can delay or derail divorce settlements. A certified appraisal removes the subjectivity and provides a court-admissible value.