Nassau County does not assess commercial and residential properties at full value. That would be too transparent and taxpayers would really know how the Assessor values the property. Instead, the Nassau Assessor, from time immemorial, uses a ratio of assessment to market value. Even the ratio of 1% that they show on the web site has now been changed for purposes of filing a complaint to the assessment.
After several years of no change for Nassau assessments, every property was re-assessed....
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