Nassau County property tax grievance attorney

We handle Nassau County property tax grievances for a flat fee, filing with the Assessment Review Commission on your behalf so an inflated assessment stops costing you year after year.

One Flat Fee, And Your Full Nassau County Reduction

Many grievance services take a percentage of your first-year savings, which means the reduction you win keeps paying someone else. We work on a flat fee instead, so the full reduction stays with you, in the first year and in every year it carries forward.


High assessments strain households from Valley Stream to Rockville Centre. If your assessed value sits above what your home would actually sell for, you are paying more than your share of the county and school levy. We review your assessment against recent local sales, tell you honestly whether there is a case, and handle the filing start to finish.


Many of the same homeowners we help with a grievance also work with us on estate planning, since a Nassau County house is usually the largest single asset a family owns.

How A Nassau County Property Tax Grievance Actually Works

Nassau County gives you one opportunity per year to challenge your assessment with the Assessment Review Commission. The filing window for the 2028/29 tax year opens January 2, 2027, and the statutory deadline is March 1, 2027.


The Commission has extended that deadline in several recent cycles, including to March 31 for the 2027/28 year, but extensions are announced at its discretion and should never be counted on.

Step 1:

We review your assessment

We pull your assessed value and compare it against recent sales of genuinely comparable homes in your neighborhood, then tell you whether the gap is worth filing on.

Step 2:

We prepare and file with the Commission

We file the application for correction of assessment before the deadline and submit the comparable sales evidence supporting a lower value.

Step 3:

We negotiate the corrected value

The Commission reviews the evidence and often opens a conference to discuss a reduction. We handle that conversation and press for a number the sales data actually supports.

Step 4:

We file a SCAR petition if the outcome falls short

If the determination ignores the evidence, the next step is a Small Claims Assessment Review petition, filed with the court for a thirty dollar fee. A professional appraisal is usually required at that stage, and we coordinate it.

Your assessment cannot be raised as a result of grieving it. The outcome is either a reduction or no change.


One point worth understanding about Nassau's calendar: there is close to a two-year lag between filing and the bill. A grievance filed in the 2028/29 window affects the school tax bill mailed in October 2028 and the general tax bill that arrives in January 2029.

Services Designed To Maximize Savings

Assessment review using recent local sales and market data

Grievance preparation and filing with the Assessment Review Commission during the official period

Evidence development and negotiation for a corrected value

SCAR petition and appearance if the initial outcome is unsatisfactory

Follow through to confirm the reduction is applied to your tax bill

To see other areas where we help local homeowners and families, visit estate planning for will and trust support.

Village Deadlines Come Earlier Than The County Deadline

Nassau County contains sixty-four incorporated villages. Some maintain their own assessment rolls, and some simply follow the county's. If you live in a village that assesses its own property, you have two separate assessments, two separate filings, and two separate deadlines. Filing with the Assessment Review Commission covers your county and school assessment only. It does nothing for your village assessment.


The village deadline is the one people miss, because it lands weeks before the county deadline. For villages that assess their own property, the filing deadline is generally the third Tuesday in February.

Valley Stream

The village maintains its own assessment roll covering roughly eleven thousand parcels. Complaint forms are available after January 1 and the filing deadline is the third Tuesday in February. The final roll is set April 1, and small claims petitions are filed between April 1 and May 1.

Lynbrook

The village grievance period opens February 1 and closes on Grievance Day, the third Tuesday in February, when the Board of Trustees sits as the Board of Assessment Review at Village Hall.

Rockville Centre

The village runs its own assessor's office and its own February grievance window, with Grievance Night held at Village Hall.

If you are not sure whether your village assesses separately, or which of the two deadlines applies to your address, contact our office and we will check it against your parcel before the window closes.

Nassau County Tax Grievance Questions Homeowners Ask Most

  • When is the deadline to grieve property taxes in Nassau County?

    The county window for the 2028/29 tax year opens January 2, 2027, with a statutory deadline of March 1, 2027. The Assessment Review Commission has extended the deadline in recent cycles but does not commit to it in advance. If you live in a village that assesses its own property, your village deadline is earlier, generally the third Tuesday in February.

  • Do incorporated villages have a different tax grievance deadline?

    Yes, and this is the most common way people lose a year. Villages that maintain their own assessment rolls, including Valley Stream, Lynbrook, and Rockville Centre, run a separate grievance process with a deadline that is generally the third Tuesday in February. A county filing does not cover your village assessment, and a village filing does not cover your county assessment.

  • Can my assessment go up because I filed?

    No. Grieving your assessment cannot cause it to be increased. The two possible outcomes are a reduction or no change, which is why filing annually makes sense even in a year when you are unsure.

  • How much can I save by grieving my Nassau County taxes?

    It depends entirely on the gap between your assessed value and what your home would actually sell for. The savings are not a one-time refund either. A corrected assessment carries forward, so a reduction keeps working in later years until values shift again.

  • Do I need an appraisal?

    Not for the initial filing with the Commission, where recent comparable sales carry the argument. If the matter proceeds to a Small Claims Assessment Review petition, a professional appraisal is usually required, and we arrange it.

  • Is it worth hiring a lawyer for a tax grievance?

    You can file on your own at no cost, and some people do. What you get from us is someone tracking both the county and village deadlines, building the comparable sales case, handling the negotiation, and carrying the matter into a SCAR petition if the first answer is wrong. If you are already working with us on wills and trusts or another matter, it also stays in one office.

Five outline stars.

Results And Reviews

Real Feedback From People We’ve Helped

Kelly L.
Could not be happier with the professionalism, courtesy, and expertise of Lawrence Rogers.
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I would like to take this opportunity to thank Laurence for everything he has done for me and my family. Seeking legal advice can be nerve-racking, and it's natural to wonder whether an attorney is fully committed to your needs. I can honestly say that from the very first time I called Laurence, he was comforting, reassuring, and attentive. He took the time to answer all of my questions and explained every detail thoroughly and clearly. Over the years, I have relied on Laurence for a variety of legal matters, including my will, estate planning, and tax grievance issues, just to name a few. His professionalism, knowledge, and dedication have consistently exceeded my expectations. I have recommended Laurence to many family members and friends, and I will continue to do so without hesitation. I am truly grateful for his guidance and support and highly recommend his services to anyone in need of a knowledgeable and trustworthy attorney.
Larry has been wonderful during all the legal requests we had, such as preparing a Will, Trust and processing a Tax Grievance. I would recommend him to everyone we know.
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