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Nassau County, NY
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Assessment Rolls

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  1. Assessment Home

  2. 2025/2026 Tentative Assessment Rolls

  3. 2024/2025 Final Assessment Roll

  4. 2024/2025 Tentative Assessment Rolls

  5. 2023/2024 Final Assessment Rolls

  6. 2023/2024 Tentative Assessment Rolls

  7. 2022/2023 Final Assessment Rolls

  8. 2022/2023 Tentative Assessment Rolls

  9. 2021/2022 Final Assessment Rolls

Contact Us

  1. Acting County Assessor Adamo

    County Assessor

    Joseph A. Adamo

    Chief Deputy Assessor

    Michele Spara

    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. Informational Exemption Brochures
  4. Exemption Applications
  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. Assessment Rolls
    1. Assessment Home
    2. 2025/2026 Tentative Assessment Rolls
    3. 2024/2025 Final Assessment Roll
    4. 2024/2025 Tentative Assessment Rolls
    5. 2023/2024 Final Assessment Rolls
    6. 2023/2024 Tentative Assessment Rolls
    7. 2022/2023 Final Assessment Rolls
    8. 2022/2023 Tentative Assessment Rolls
    9. 2021/2022 Final Assessment Rolls
  14. FOIL Requests
  15. Class 3 Notice of Tentative Assessed Values
  16. Reassessment Methodologies
  17. News Releases
  18. Wholly Exempt Application
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