Home Appraisal Services and Square Footage: What Manhattan Property Owners Need to Know About Residential Appraisal

June 11, 2026

Square footage confusion can cost Manhattan property owners real money during a residential appraisal. Understanding how appraisers handle this issue is the first step toward protecting your asset's value.

In New York City, square footage is one of the most contested figures in real estate. A condo listed at 1,200 square feet may not contain the same livable area as another unit at the same figure. When a professional residential appraisal is ordered in Manhattan, NY, that number is scrutinized carefully, and the result can influence your loan approval, sale price, or estate valuation. Qualified home appraisal services know how to navigate these discrepancies.

Why Square Footage Can Vary So Much in NYC

There is no single agreed-upon standard for how NYC residential properties must be measured. A gross square footage figure can include wall thickness, a proportionate share of hallways, lobby space, or other common areas. A net or usable figure reflects only the space a resident can actually occupy.

For condo buyers, the figure most often cited appears in the building's offering plan, which may not match the interior space you can walk through. For co-ops, the situation is often less clear, as many buildings do not include official square footage in their offering plans at all.

During a residential appraisal, the appraiser may physically measure the unit while also referencing offering plan figures for comparable sales. When those figures diverge, it can affect the price-per-square-foot analysis and how your unit compares to recent sales in the same building or neighborhood.

What Documents Can Help Protect Your Appraisal Value?

Proactive preparation may lead to a more accurate and defensible appraisal outcome. Property owners in Manhattan, NY, can take practical steps before an appraiser arrives.

Consider gathering these documents in advance:

The building's original offering plan, specifically Schedule A, which may state the method used to calculate square footage for each unit.
Architectural drawings or floor plans providing a professional rendering of the unit's dimensions and layout.
Any amendments to the offering plan filed after the initial conversion or construction, as these may update stated measurements.
The NYC Department of Finance Notice of Property Value, which for condos typically lists a Gross Residential Square Footage figure aligned with the offering plan.

Having these materials ready allows the appraiser to reconcile what was originally represented against what they measure on-site, and creates a clear paper trail if comparable sales reflect a different measurement methodology.

What if the Offering Plan Square Footage Seems Inflated?

Discrepancies between advertised and measured space are common in Manhattan. Developers may include a proportionate share of building common areas in a unit's listed square footage, making the stated figure appear larger than the livable interior. If you suspect this is the case, pulling the original condo declaration from NYC's ACRIS database can clarify the measurement methodology used at the time of conversion. An experienced appraiser can then apply appropriate adjustments when analyzing comparable sales.

Get Accurate Home Appraisal Support

A knowledgeable appraiser can make a significant difference in how square footage impacts your property's final valuation. East Coast Appraisal Service proudly serves Manhattan, NY, and surrounding boroughs, providing certified residential appraisals backed by over 30 years of NYC market expertise. Whether you need a valuation for a sale, refinance, estate, or legal matter, their team can help. Contact East Coast Appraisal Service today or call 718-834-1700 to schedule your appraisal. You can also find East Coast Appraisal Service on Google to read reviews and confirm location details.

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What Is an IRS Step-Up Appraisal? A Plain-English Guide

May 28, 2026

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.