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Tax AssessmentThe assessed value of your home, set by your Town Tax Assessor, is a key factor in determining whether you’re paying too much property tax. How Property Tax Assessment Works
How Property Taxes Are Reduced
To learn more about the Property Tax Assessment process, and to see if your property qualifies for a property tax reduction, complete and submit the form to the right or call Cori at (631) 470-6033 today! About All Island Tax GrievanceAll Island Tax Grievance has helped thousands of homeowners lower their property taxes. Founded by Cori Kaplan, a licensed attorney and real estate broker, All Island makes it easy for homeowners to deal with the often daunting world of “town hall.” We research each case, file all necessary paperwork, and represent the final case in court if necessary. We’re a small business that provides personalized service, and our “win rate” is greater than 95%. We offer a free, no-obligation initial consultation. We’ll let you know if you’re qualified to receive a tax reduction. There is no fee unless we successfully get you a tax reduction. ![]() |
All Island Serves All Suffolk County Towns | ||
| Babylon | Huntington | Smithtown |
| Brookhaven | Islip | Southampton |
| East Hampton | Riverhead | Southold |



Q. WHAT IS A TAX GRIEVANCE?