Type in your Nassau County address to see how your property taxes have changed compared to others, and what impact the tax grievance process has had.
Data updated April 18, 2018.
An 18-month Newsday investigation dug deep into millions of Nassau property records to reveal stark differences in tax bills and an assessment system weighted against the middle class and poor. Read the full story.
The map contains parcels that have paid taxes every year since the 2010-11 tax year for which geographic location information was available.
Production: Tara Conry | User Experience: Matthew Cassella | Development: Will Welch | Data: Matt Clark
Refund totals include those the county has paid and those it estimates it will pay in the future for challenges filed since the 2011-12 tax year. This data is current through mid-2016.
Property Value Details
A property’s assessment is a fraction (.25%) of what the county estimates it is worth — its “full market value” — but since officials have not updated their “frozen” estimates since 2012-13, most properties have become assessed below what they are worth as real estate prices have risen. Appealed properties, though, are assessed even lower.
Exemption change indicates whether exemptions (like STAR for school taxes) changed, affecting the assessment by 10 percent or more than if they had not changed.
Recent STAR Exemption
Properties like this one that more recently obtained STAR property tax exemptions receive a STAR credit check from the state instead of having their tax bills reduced by the exemption. Due to data limitations, STAR credit check amounts are not subtracted from the above tax totals for 2017-18. As a result, those totals are larger than the actual tax burden of property owners who received a check.