NY Property Tax Assessment Challenges | Duffy & Catlin PLLC
⏰ Grievance Day Deadlines Are Coming: Every municipality in New York has a Grievance Day deadline. Don’t miss your window to challenge an excessive assessment.
New York State · Property Assessment Challenges

Is Your New York
Property Assessment
Excessive?

Municipalities across New York State are conducting reassessments. Commercial, industrial, and mixed-use property owners from Buffalo to Rochester to Syracuse are seeing sharp assessment increases — many of which don’t reflect actual market conditions, income performance, or property-specific factors.

An assessment is an opinion, not a final number. Duffy & Catlin PLLC represents commercial and residential property owners in challenging assessments that don’t hold up — at no upfront cost.

Serving property owners across New York State. No fee unless we achieve a reduction. Attorney advertising. Duffy & Catlin PLLC.

📅  2026 Grievance Day Deadlines — NY
Towns
⚠ Grievance Day — 4th Tue. in May Most NY towns follow this standard deadline. Missing it means waiting a full year.
Cities
⚠ Cities Have Different Deadlines Buffalo, Rochester, Syracuse & other cities set their own filing dates — often earlier. Verify yours now.
Summer 2026
School Tax Bills Issued School district bills reflect the new assessed values and arrive in late summer.
Jan 2027
County & Municipal Bills Issued County tax bills are mailed in January of the following year — reductions apply here too.
Get a Free Assessment Review →
Who We Represent

Commercial, Industrial & Residential Assessment Challenges

Commercial and industrial properties are especially vulnerable to over-assessment in mass revaluations. The income, cost, and sales comparison approaches each require proper application — and assessors don’t always get it right.

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Commercial & Office

Office buildings, retail centers, and mixed-use properties are frequently assessed without proper consideration of actual vacancy rates, lease terms, or market income levels. We apply the correct methodology to challenge inflated values.

Retail plazas Office buildings Mixed-use Storefronts
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Industrial & Warehouse

Manufacturing sites, warehouses, and flex-industrial properties carry unique valuation factors — functional obsolescence, site utility, and limited comparable sales — that mass appraisals routinely fail to account for.

Warehouses Manufacturing Flex space Distribution
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Residential & Multi-Family

Single-family homes, investment properties, and multi-family buildings all benefit from careful review. Even modest assessment increases can translate to meaningful tax liability when compounded over a multi-year cycle.

Single-family Multi-family Investment property Vacant land
Why It Matters

Assessments Are Opinions — And Opinions Can Be Challenged

A mass reassessment applies broad market-wide data to thousands of properties simultaneously. It cannot account for factors specific to your property: actual lease income, vacancy rates, recent capital expenditures, functional obsolescence, or the most relevant comparable transactions.

For commercial and industrial owners, an over-assessment can result in substantial excess tax liability over the assessment cycle. New York law gives you the right to challenge — but only within a strict annual window.

  • Income-producing properties have distinct valuation standards assessors are required to apply
  • Vacancy, below-market leases, and deferred maintenance are all recognized grounds for challenge
  • Industrial properties often carry functional obsolescence that standard models overlook
  • You are not required to accept the assessor’s opinion as final
  • No upfront cost — our fee applies only if we achieve a reduction
Review My Assessment →
$0
Upfront. Contingency fee — you pay only if we achieve a reduction.
Per year. Grievance Day is the only formal window to challenge your assessment.
NY
Statewide practice. We represent property owners across New York — from Buffalo and Rochester to Syracuse and beyond.
All
Property types represented — commercial, industrial, mixed-use, and residential.
Hidden Tax Increases

Declining Equalization Rates Are Quietly Raising Your Tax Burden

Even if your assessed value hasn’t changed, a falling equalization rate can dramatically increase your effective tax liability — and most property owners never see it coming.

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What Is an Equalization Rate?

New York State calculates an equalization rate for each municipality — a ratio expressing what percentage of full market value local assessments represent. A rate of 80% means the town is assessing properties at 80 cents on the dollar of market value.

When the rate falls, the state and county assume your property is worth more — even if your assessed value on paper is unchanged.

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How a Falling Rate Increases Your Bill

County tax levies are apportioned based on equalized values across municipalities. If your town’s equalization rate drops — because market values have risen faster than assessments — your municipality carries a larger share of the county tax burden.

The result: higher county tax bills for every property owner in that municipality, with no change to the assessment roll and no formal notice.

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Why Challenging Your Assessment Still Matters

If your assessment is excessive relative to your property’s actual market value, you are bearing a disproportionate share of a tax burden that is already rising due to equalization. A successful challenge corrects both problems simultaneously — reducing your assessed value and ensuring your share of the levy is fair.

County bills, issued each January, reflect the fully equalized values. Acting before Grievance Day is the only way to protect your position.

Example: How This Works in Practice

Suppose your commercial property carries a $500,000 assessed value and your town’s equalization rate drops from 90% to 70% over two years as market values rise. The state now treats your property as if it has a full market value of roughly $714,000 — a 27% increase — for purposes of county tax apportionment. Your county tax bill rises accordingly, without any formal reassessment or notice to you. If your assessed value was already excessive to begin with, the compounding effect is even greater. This is why a timely assessment challenge is one of the most effective tools available to New York property owners.

Request a Free Review →
Time-Sensitive

How the Challenge Process Works

Step 1

Free Case Review

Contact us with your assessment notice. We evaluate whether your property has been over-assessed and advise you honestly on the strength of a potential challenge — at no cost and no obligation.

Act Early
Step 2

Informal Review Window

Many municipalities allow a brief period to engage the assessor’s office before Grievance Day. Early contact gives us the most time to build a complete, well-supported case.

Hard Deadline
Step 3

Grievance Day Filing

We file before your municipality’s Grievance Day — typically the 4th Tuesday in May for towns. Cities operate on separate schedules: Buffalo, Rochester, Syracuse, and other cities set their own earlier deadlines under individual city charters. We track the correct date for your property.

Step 4

Hearing, Resolution & Tax Relief

We represent you at all hearings. Approved reductions appear on your school tax bill in late summer and your county tax bill issued in January of the following year — with no upfront cost to you at any stage.

Our Approach

Handled Entirely by Our Attorneys

From the initial case review to any formal hearing, we manage every step of your appeal — so you don’t have to.

01

Free Consultation

Call or submit our form. We’ll review your assessment notice and advise you honestly on whether the evidence supports a viable challenge — at no cost and no obligation.

02

Analysis & Evidence

For commercial properties, we examine income data, market comparables, cost approaches, and property-specific conditions to build a documented, credible case for reduction.

03

We Handle All Filings

We prepare and submit every required document — Informal Review Applications, Board of Assessment Review petitions, and supporting exhibits — correctly and before every deadline.

04

Full Representation

We manage all communication with the assessor’s office and appear on your behalf at any formal grievance hearing or SCAR proceeding. You are kept informed without having to attend.

Scope of Services

Comprehensive Assessment Challenge Representation

Commercial Priority

Income & Cost Approach Valuation

Commercial and industrial properties must often be valued on their income-producing capacity, not just sales comparisons. We apply the appropriate valuation methodology and challenge assessments that ignore how your property actually performs in the current market.

Market Research

Comparable Sales & Market Analysis

Our team identifies the most relevant comparable transactions — including arm’s-length commercial sales — to demonstrate what your property is actually worth under current New York market conditions.

Full-Service Filing

Paperwork & Deadline Management

We handle every document: Informal Review Applications, BAR petitions, supporting exhibits, and any supplemental filings required throughout the process. You don’t have to track a single deadline.

Legal Representation

Grievance Hearings & SCAR Proceedings

If your case proceeds beyond the Board of Assessment Review, we represent you at Small Claims Assessment Review (SCAR) or Supreme Court Article 7 proceedings — with licensed New York attorneys at every stage.

When Administrative Review Isn’t Enough

RPTL Article 7 Court Proceedings

When a grievance before the Board of Assessment Review does not produce an adequate result, commercial property owners have the right to seek judicial review under Article 7 of the New York Real Property Tax Law. Duffy & Catlin PLLC handles the full scope of Article 7 litigation — from initial petition through final resolution.

Article 7 proceedings are filed in New York Supreme Court and require strict compliance with statutory deadlines, procedural rules, and evidentiary standards. Our attorneys manage every aspect of the court process so commercial owners can pursue a legitimate reduction without navigating complex litigation on their own.

Discuss Your Case →
Filing & Petitions

We prepare and file the Article 7 petition in Supreme Court within the applicable statutory deadline, ensuring procedural requirements are met from the outset.

Court Appearances

Our licensed New York attorneys appear in court on your behalf at all conferences, hearings, and proceedings. You are not required to appear.

Valuation Evidence

We develop and present the commercial valuation evidence — income analysis, appraisals, and market comparables — needed to support a reduction at the judicial level.

Negotiation & Resolution

Many Article 7 cases resolve through stipulated settlement. We negotiate directly with municipal counsel to achieve appropriate reductions without the cost and delay of a full trial.

Common Questions

What Property Owners Are Asking

My property is in a city — is the deadline the same as for towns? +
No — cities in New York State operate under their own charters and set independent assessment filing deadlines that often differ significantly from the standard town Grievance Day schedule. Buffalo, Rochester, Syracuse, Yonkers, and other cities each have their own timelines. In some cities, the deadline falls months earlier than the typical 4th Tuesday in May. If your property is in a city, contact us promptly so we can identify the correct deadline for your municipality before it passes.
What is an equalization rate and how does it affect my taxes? +
An equalization rate is the ratio New York State uses to express how closely a municipality’s assessed values track actual market values. When real estate prices rise faster than assessments are updated, the equalization rate falls — and the state assigns a higher implied market value to every property in your municipality. This increases your share of county and school district levies even if your assessed value never changed. County tax bills arrive in January of the following year and fully reflect these equalized values. If your assessment is already excessive, a falling equalization rate compounds the problem. Challenging your assessment is the most direct way to reduce your exposure on both fronts.
Does a higher assessment always mean higher taxes for my commercial property? +
Not always — it depends on your assessment relative to other properties and the applicable tax rates. However, a significantly elevated assessment for a commercial or industrial property can translate to a material increase in school district and municipal tax bills. We can review your specific notice and help you understand what it means for your property.
What does it cost to have Duffy & Catlin PLLC challenge my assessment? +
Nothing upfront. Our firm works on a contingency basis — we only collect a fee if we achieve a reduction in your assessment. The initial consultation and case review are always free. There is no financial risk in having us evaluate your property.
What makes commercial property challenges different from residential ones? +
Commercial valuation is considerably more involved. Income-producing properties are typically assessed using an income capitalization approach that accounts for vacancy, actual rents, operating expenses, and market capitalization rates. Mass reassessments frequently fail to apply these factors correctly, which is why commercial challenges often have strong evidentiary grounds.
What if my case isn’t strong enough to challenge? +
We’ll tell you that upfront — at no cost to you. We only pursue challenges where the evidence supports a meritorious case. Our credibility with assessors and hearing boards depends on bringing well-grounded, properly documented appeals.
How long does the process take? +
The informal review and Board of Assessment Review process typically runs through spring and early summer. Cases that proceed to SCAR or Article 7 proceedings may take additional months to resolve. Throughout the entire process, our attorneys handle all communications and appearances on your behalf.
Does a successful challenge affect future assessments? +
A successful challenge results in a corrected assessment for the applicable tax year. Future assessments are determined through your municipality’s ongoing reassessment cycle. We can advise you on what a reduction means for your specific situation and what to monitor going forward.
Get Started

Request a Free Case Evaluation

Tell us about your property. No matter where in New York you’re located — Buffalo, Rochester, Syracuse, or anywhere in between — we’ll review your assessment and advise you honestly at no cost.

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No obligation. No upfront fees. We typically respond within one business day. Attorney advertising.

(716) 755-2125

Duffy & Catlin PLLC
505 Ellicott Street, Suite 500
Buffalo, NY 14203

Commercial & Industrial Representation We regularly handle retail, office, warehouse, and mixed-use assessment challenges across New York State — not solely residential properties.
Contingency Fee — No Upfront Cost Our fee applies only if we achieve a reduction in your assessment. The initial review is always free.
Licensed New York Attorneys All work is performed by or under the supervision of licensed NY attorneys. We appear at every stage so you don’t have to.
Act Before May 2026 Grievance Day is a statutory deadline with no extensions. The earlier you reach out, the more time we have to prepare a thorough case.
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