AI Dispute Engine

Assessment Appeal · New York City, New York

Did the New York City assessor artificially inflate your home value?

Generate a formal property tax valuation dispute to lower your annual tax bill.

When county tax assessors update property values, they rely on mass-appraisal algorithms that frequently overvalue individual homes. If your county assessor valued your home above its actual fair market value, you do not have to accept an inflated tax bill. Use our self-help software utility to generate an official Property Assessment Appeal Notice for the NYC Tax Commission.

Draft my property tax dispute

Your consumer rights: challenging mass-appraisal errors

Reviewing board

NYC Tax Commission

NYC's transitional assessment system frequently creates inequitable assessments between neighboring properties, supporting strong appeal grounds.

Strict appeal window

March 1 for Class 1 properties; March 15 for other classes. Missing this window means you lose the right to contest your bill for the entire year.

Legal basis: Incorrect Market Value Assessment

State property tax codes require assessors to value real property at its fair market value as of the lien date. Mass-appraisal computer algorithms frequently miss neighborhood-specific factors — recent declines in comparable sales, deferred maintenance, location disadvantages — and over-assess individual properties.

Correction mechanism

A structured written valuation dispute forces the NYC Tax Commission to review comparable property data in your immediate radius, frequently resulting in a reduction of your property tax basis.

Evidence to lock in your appeal

Pull at least 3 to 5 comparable sales (comps) from the prior 12 months in your immediate neighborhood, photograph any condition issues that lower your home's value, gather a recent independent appraisal if available, and document any unusual features that depress market value.

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Tax

Property Tax Appeal

Question 1 of 138%

The person, company, or agency this letter is addressed to.

✓ Uses the sales-comparison approach assessors are required to consider

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June 1, 2026

[recipient name]
[recipient address]

Re: Formal Appeal of [tax year] Assessed Value
    Parcel / APN: [parcel number]
    Property: [property address]
    Assessed Value: $[assessed value]
    Owner's Opinion of Value: $[claimed value]

To the Assessor / Board of Equalization:

I, [user full name], the owner of record of the above-referenced property, hereby file a formal appeal of the [tax year] assessed value pursuant to applicable state and county property-tax appeal procedures.

I respectfully request that the assessed value be reduced from $[assessed value] to $[claimed value], supported by the comparable-sales analysis below.

COMPARABLE SALES ANALYSIS (Sales-Comparison Approach)

Comparable 1:
[comp 1]

Comparable 2:
[comp 2]

Comparable 3:
[comp 3]

These arm's-length transactions, occurring within the assessment lookback window and within the immediate neighborhood of the subject property, indicate that the current assessed value materially exceeds fair market value as of the relevant lien date.

PROPERTY CONDITION

[condition notes]

Material defects, deferred maintenance, and functional obsolescence reduce the property's market value below the mass-appraisal estimate produced by the assessor's CAMA model.

STATEMENT OF FACTS

[facts]

REQUESTED RELIEF

[desired outcome]

Specifically, I request that the Assessor: (i) reduce the [tax year] assessed value of parcel [parcel number] to $[claimed value]; (ii) issue a corrected assessment notice; and (iii) refund or credit any overpayment of property taxes already remitted for the [tax year] tax year.

I am available to attend an informal review or formal Board of Equalization hearing and will produce supporting documentation, photographs of the comparable sales, and additional market evidence as required.

Sincerely,

[user full name]
[user address]
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