The Assessor is responsible for the valuation of real property in the Town of Grand Island, and continuously updates information on all parcels of real property. This includes collecting and maintaining the physical information needed to estimate the market value of all property. The office must also maintain the ownership records for all property in the Town by verifying and reviewing all sales that occur. 

The office is also responsible for the administration of various tax exemptions in accordance with New York State Real Property Tax Law, and local laws, along with the maintenance of property inventory records. Property exemptions are awarded for a variety of reasons. Some of the exemptions available are Senior Citizen, Enhanced Star and Basic Star for School Taxes, Veterans’ Exemption, Agricultural Exemptions, Business Incentive Exemption among others.


  • About property taxes and assessments - video
  • Contesting an assessment - video
  • Is your assessment fair? - video


March 1:  Taxable Status Date
All exemption applications and renewals must be filed by March 1st to affect the following September’s school tax bill and January property tax bill.

May 1:  Tentative Assessment Roll Filed 
Property owners will be notified of any changes to their assessments at this time.

4th Tuesday in May:  Grievance Day     
Property owners may appear or file the form with a written explanation if they feel their assessment is incorrect.  Grievance forms will be available in the Assessor’s Office at the end of April.  The tentative assessment roll is also available for inspection prior to grievance day.  After Grievance Day, (if you attended or sent in a written form) letters outlining the Assessment Board of Review’s decision will be sent to property owners.

July 1:  Final Assessment Roll Filed     
All changes from Grievance Day are entered on the final roll.  The following September school tax and January property tax bills are based on the assessment as of July 1.

Do you have questions about our 2021 Reassessment Project?
The video below, created with the assistance of our Town Assessor, Ms. Judy Tafelski, and Mr. Joe Emminger, of ENPM, Inc., takes a careful look at the process and timeline involved in this town-wide project. Towards the end of the video, contact information is provided to answer questions that remain. 



Town Hall 716-773-9600

Judy Tafelski, Assessor
x 648

Fax: 716-773-9618
Department Email:

Grand Island Town Hall
1st Floor
2255 Baseline Road
Grand Island, New York 14072

Due to COVID-19 we have made the following changes to the program for tax year 2021:

  • We are requesting all renewal applications to be submitted through US Post Office or emailed directly to this office. 
  • Proof of income will not be required with this year’s renewal unless you believe your income to be lower than last year.  If so, include your statements or 2019 1040 form.  We will make copies and return the information to you. 
  • All owners and spouses of owners must sign the renewal application and return to the office in the return envelope provided. 
  • Deadline for submitting your renewal application is March 1. 
  • Feel free to contact this office with any questions you may have at 716-773-9600.