Nassau County, NY Property Tax Secrets

Decoding The “Secret Sauce” Behind The Nassau County, NY Property Reassessment

Click the Download button below to get a file that charts for laypeople the computer code behind Nassau County’s property reassessment formula recently made public.

You can view the file with any spreadsheet software, such as Microsoft Excel, Google Sheets, or Apache OpenOffice.

This work in progress is regularly updated. Note that some information is pending due to several computer files not yet released by the County.

References:

• The original computer code the County released: https://hempsteadny.gov/files/pdfs/secret-formula.pdf?v1.0
• Pending data file names referenced in the code:
  • MARKET 1 RESIDENTIAL MASTER POPULATION WITH SALES FOR PROGNOSE.sav
  • MARKET 2 RESIDENTIAL MASTER POPULATION WITH SALES FOR PROGNOSE.sav
  • MARKET 3 RESIDENTIAL MASTER POPULATION WITH SALES FOR PROGNOSE.sav
  • MARKET 4 RESIDENTIAL MASTER POPULATION WITH SALES FOR PROGNOSE.sav
  • MARKET 5 RESIDENTIAL MASTER POPULATION WITH SALES FOR PROGNOSE.sav
  • MARKET 6 RESIDENTIAL MASTER POPULATION WITH SALES FOR PROGNOSE.sav
  • CONDO MASTER POPULATION WITH SALES FOR PROGNOSE.sav
• Pending script file names referenced in the code:
  • Market 1 2021 Coefficients.sps
  • Market 2 2021 Coefficients.sps
  • Market 3 2021 Coefficients.sps
  • Market 4 2021 Coefficients.sps
  • Market 5 2021 Coefficients.sps
  • Market 6 2021 Coefficients.sps
  • Market 7 2021 Coefficients.sps
• Property lookup: http://www.mynassauproperty.com/

Find Errors? Let us know!

Not affiliated with the County of Nassau in the State of New York.