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Nassau County, NY
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Assessment Rolls

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  1. Assessment Home

  2. 2021/2022 Final Assessment Rolls

  3. 2022/2023 Tentative Assessment Rolls

  4. 2023/2024 Tentative Assessment Rolls

  5. 2022/2023 Final Assessment Rolls

Contact Us

  1. Acting County Assessor

    Matthew R. Cronin, IAO

    Contact Us

    County Assessor's Office

    240 Old Country Road 4th Floor
    Mineola, NY 11501
    Ph: 516-571-1500

    Hours

    Monday - Friday
    8 a.m. - 4:30 p.m.

FAQs

  1. Is my property assessment a tax?
  2. What role does the annual assessment of my property play in determining my property taxes?
  3. Won’t my property taxes go down if my assessment goes down?
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  1. Assessment Home
  2. Fines & Taxes
    1. What the Department of Assessment Does
    2. How Is My Property Tax Determined?
  3. Exemption Brochures
  4. Exemption Forms
  5. Tax Map & Apportionment
  6. Frequently Asked Questions
  7. Freedom of Information Law & Fees
  8. Glossary of Assessment Terms
  9. Important Dates
  10. Online ASIE Forms
  11. Property Search
  12. Contact
  13. Rules and Regulations (PDF)
  14. Assessment Rolls
    1. Assessment Home
    2. 2021/2022 Final Assessment Rolls
    3. 2022/2023 Tentative Assessment Rolls
    4. 2023/2024 Tentative Assessment Rolls
    5. 2022/2023 Final Assessment Rolls
  15. FOIL Requests
  16. Class 3 Notice of Tentative Assessed Values
  17. Reassessment Methodologies
  18. News Releases
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