Date of Death Appraisal: A New York Estate Guide
Last updated: May 2026
When someone passes away and leaves real estate behind, the family eventually hits a question that sounds simple and is not: what was the property worth on the day they died? Not today, not when it sells, but on that specific date. Getting that number right matters for the estate’s taxes, for the heirs’ future taxes, and for the executor’s legal footing. Getting it wrong, or guessing, can cost the family real money years later.
This is a guide to what a date of death appraisal is, why New York estates need one, and what separates a report that holds up from one that does not.
This article is general information, not tax or legal advice. Consult your attorney and tax advisor for your specific situation.
What Is a Date of Death Appraisal?
A date of death appraisal is a retrospective valuation that establishes a property’s fair market value as of the day the owner died, rather than its value today. It is used to settle the estate, support tax filings, and set the heirs’ cost basis in the inherited property.
The “retrospective” part is what makes it a specialized assignment. The appraiser is not valuing the home as it sits now. They are reconstructing what it would have sold for on a date in the past, using sales and market conditions from that period. For real estate inherited from someone who died, the basis is generally the fair market value on the date of death, per IRS Publication 551 (revised December 2025). That single number does a lot of work:
- It sets the cost basis heirs use to calculate capital gains if they later sell
- It supports the estate tax return (federal Form 706) when the estate is large enough to file
- It gives the executor a defensible value for inventory and distribution
- It creates a paper trail if the IRS or a beneficiary ever questions the value
Why the Date of Death Value Matters So Much
Most families do not realize how much the date of death value affects what heirs eventually pay in taxes. It comes down to the “step-up in basis.”
When you inherit a house, your tax basis is generally reset to its value on the date of death, not what the original owner paid for it. Per the IRS, the basis of inherited property is generally the fair market value at the date of the decedent’s death (IRS, Gifts and Inheritances FAQ). If a parent bought a Buffalo home decades ago for a small sum and it is worth far more now, that low original cost would normally create a large taxable gain on sale. The step-up erases the gain that built up during the owner’s lifetime. A well-supported, slightly higher date of death value can mean a meaningfully smaller capital gains bill when the heirs sell.
There is also an alternate valuation date election, which lets some estates value assets six months after death instead, but only when an estate tax return is filed and the election is made, per the IRS guidance above. That decision belongs to the estate’s tax advisor. The appraiser’s job is to deliver a value as of whichever date applies, supported well enough to stand.
What Makes a Date of Death Appraisal Defensible
Not every appraisal can do this job, and this is where families get burned by choosing on price alone. A retrospective estate appraisal has to be built to survive review by the IRS, by the Surrogate’s Court, and sometimes by a beneficiary who feels shortchanged. A defensible report has four things.
- A clear, correct effective date. The value is tied to the date of death, stated explicitly, with comparable sales drawn from that time period.
- Comparable sales from the right window. The appraiser uses sales from around the date of death, not today’s market, and documents why each comp applies.
- A credential that can be defended. A report backing an estate tax position should come from an appraiser qualified to explain and defend it if questioned.
- Full documentation. Every adjustment and conclusion is written out, so the reasoning survives long after the inspection.
Rubino has prepared litigation appraisals for the U.S. Department of Justice and the New York State Court of Claims and has testified as an expert witness in Erie County Surrogate’s Court, which is the venue where contested New York estate values are heard. That is the standard a date of death appraisal should be built to: not “good enough for the family,” but “good enough for the court.”
[PRACTITIONER INSERT: Ron’s example of a retrospective estate appraisal that held up under IRS or Surrogate’s Court scrutiny, or one that had to be redone because it was done poorly. Ron to supply real example for editorial pass.]
Don’t Use the Assessment, and Don’t Wait
Two pieces of standard advice are worth pushing back on directly.
First, do not substitute the town’s tax assessment for a real appraisal. Families often assume the assessed value on the tax bill is the value for estate purposes. It is not. An assessment is a mass-appraisal figure for taxation, frequently outdated, and it carries no weight as support for a basis or an estate tax position. Using it invites exactly the kind of challenge a proper appraisal is meant to prevent.
Second, do not wait years to get the appraisal done. A retrospective valuation gets harder, not easier, as time passes. The market data still exists, but the property’s condition as of the date of death becomes harder to establish, records get lost, and memories fade. The cleanest date of death appraisals are ordered while the facts are still fresh. If you are an executor, this is a task to handle early in administration, not at the end.
How an Estate Appraisal Differs From a Sale Appraisal
| Feature | Date of Death Appraisal | Standard Sale Appraisal |
|---|---|---|
| Effective date | The date of death (retrospective)* | Current date |
| Comparable sales used | From around the date of death | Most recent sales |
| Primary purpose | Estate settlement, tax basis, Form 706 | Lending or sale decision |
| Audience that may review it | IRS, Surrogate’s Court, beneficiaries | Lender |
| Why it can cost more | Retrospective analysis, defense readiness | Standardized scope |
*If the estate elects the alternate valuation date, the effective date is six months after death. That election is made by the estate’s tax advisor on a filed estate tax return.
Frequently Asked Questions
How do I choose a qualified appraiser for estate settlement?
Look for a New York State certified appraiser with specific experience in retrospective and estate valuation, and ideally one who could defend the report if it is questioned. Ask whether they have prepared appraisals for tax or court purposes before. An estate value may be reviewed by the IRS or the Surrogate’s Court, so the appraiser’s ability to explain and stand behind the number matters as much as the number itself.
Can I just use the price the house eventually sells for?
Not reliably. A sale months or years after death reflects a different market and the property’s condition at that later time, not its value on the date of death. The IRS basis rules tie value to the date of death, with a limited alternate-valuation option, so a later sale price is not a substitute for a properly dated appraisal. A sale can be one data point, but the estate still needs a value as of the correct date.
Does every estate need a date of death appraisal?
Not every estate is required to file an estate tax return, but a date of death value still benefits almost any estate that holds real estate, because it sets the heirs’ cost basis and protects them from overpaying capital gains later. Even modest estates gain from having a documented, defensible value rather than a guess. Your attorney or tax advisor can tell you whether a return is required in your situation.
What is the difference between an estate appraisal and a real estate appraisal for estate purposes?
They are the same thing described two ways. An estate appraisal, a date of death appraisal, and a real estate appraisal for estate purposes all refer to a retrospective valuation of property as of the date of death, used to settle the estate and support tax filings.
How long does a date of death appraisal take?
Usually a similar timeline to other appraisals, roughly a week or two, though the retrospective research can add time because the appraiser is reconstructing a past market rather than reading the current one. If the date of death was years ago, expect more analysis. Ordering it early in the estate administration keeps the process cleanest.
About the Author
This article was written by Ronald J. Rubino, MAI, President of GAR Appraisal LLC in Williamsville, NY. Ron holds the MAI designation from the Appraisal Institute and is a New York State Certified General Real Estate Appraiser with more than 30 years of valuation experience across New York State. He has testified as an expert witness in New York State Supreme Court and Erie County Surrogate’s Court, has prepared litigation appraisals for the U.S. Department of Justice and the New York State Court of Claims, and is a past president of the Appraisal Institute’s Western New York-Ontario Chapter. Learn more about Ron and the GAR Appraisal team, or request a quote for an estate valuation.
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