Real Estate Appraisal for Nassau County, NY: 6 Common Situations When You May Need One

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When settling an estate in New York, real estate is often the most valuable and complex asset to handle. A professionally prepared appraisal by a certified appraiser is not an optional extra — it’s a critical document that protects executors, beneficiaries, and the estate itself.

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When someone inherits property—whether it’s real estate, stocks, or other assets—one of the most important (and often overlooked) tax concepts is the “step-up in basis.” An IRS step-up appraisal is the process used to determine the fair market value of an asset at the time of the original owner’s death. That value becomes the new tax basis for the heir. Understanding how this works can save—or cost—significant money when the asset is eventually sold. What Does “Step-Up in Basis” Mean? “Basis” is essentially what an asset is worth for tax purposes. Normally, if you buy something, your basis is what you paid for it. But when you inherit property, the IRS allows that basis to be “stepped up” to the asset’s fair market value as of the date of death. Example: A parent buys a home for $100,000 decades ago At the time of their passing, the home is worth $700,000 The heir’s new basis becomes $700,000—not $100,000 If the heir sells the home for $710,000, they only pay capital gains tax on $10,000—not $610,000. That’s the power of the step-up. What Is an IRS Step-Up Appraisal? An IRS step-up appraisal is a formal valuation that establishes the fair market value of an inherited asset as of a specific date—usually the date of death. For real estate, this means a licensed appraiser evaluates: Comparable sales (comps) Property condition Market trends at that time Location and unique characteristics The result is a retrospective appraisal , meaning it determines value as of a past date, not the current market. Why Is It Important? A step-up appraisal is critical for several reasons: 1. Reduces Capital Gains Taxes Without a proper appraisal, the IRS may assume a lower basis, increasing taxable gains when the asset is sold. 2. Provides Documentation If the IRS ever questions the reported value, a professional appraisal serves as defensible evidence. 3. Helps with Estate Planning and Reporting Executors and heirs need accurate values for estate filings and distribution decisions. When Do You Need One? You typically need a step-up appraisal when: You inherit real estate and plan to sell it The estate did not already establish a value for tax purposes Significant time has passed since the date of death There’s potential for IRS scrutiny (high-value assets) Even if you don’t plan to sell immediately, getting the appraisal early can prevent headaches later. Date of Death vs. Alternate Valuation Date Most step-up appraisals use the date of death as the valuation date. However, in some cases, the estate may elect an alternate valuation date (six months later), if it reduces estate taxes. This decision is usually made by the estate’s executor in consultation with tax professionals. What Makes a Good Step-Up Appraisal? Not all appraisals are equal—especially when dealing with the IRS. A reliable step-up appraisal should: Be completed by a state-licensed or certified appraiser Follow Uniform Standards of Professional Appraisal Practice (USPAP) Clearly state it is a retrospective appraisal Include strong comparable sales data from the relevant time period Be well-documented and defensible Common Mistakes to Avoid Using current market value instead of date-of-death value Relying on informal estimates (like Zillow) Waiting too long to gather historical data Failing to get an appraisal at all These missteps can lead to disputes or higher taxes. Final Thoughts An IRS step-up appraisal might not be the first thing on your mind after inheriting property, but it plays a major role in determining future tax liability. Getting it right can mean the difference between a manageable tax bill and a costly surprise. If you’ve inherited property—or expect to—it’s worth consulting with a qualified appraiser and tax advisor early in the process. A little diligence upfront can protect you financially down the road.

Inherited NYC property? Learn what an IRS step-up appraisal is, why date-of-death value matters, and how NY estate tax works — from a Brooklyn appraisal firm.

ACRIS is NYC's free property records database. Learn what it is, how to look up who owns a property in New York, and what it costs — from a Brooklyn appraisal firm.

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