County Seal
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Edward P. Mangano
County Executive
240 Old Country Rd.
Mineola, NY 11501 (516) 571-1500
Thaddeus J. Jankowski, Jr.
County Assessor
The Department of Assessment is responsible for developing fair and equitable assessments for all residential and commercial properties in Nassau County on an annual basis. Nassau County's assessment roll includes over 418,000 properties with a value of $309 billion. ...more...

08/18/2009 - Assessor Jankowski: "Homeowners Can Now Make an Appointment to Meet With an Assessor at the Department of Assessment"

07/28/2009 - Department of Assessment Issues First-Ever Mid-Term Real Estate Market Analysis

05/29/2009 - PDF Nassau County Assessment Administration System Review: Analysis and Recommendations

NYS School Tax Relief (STAR) Program

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