YES. Although you are not required to use a tax reduction service to file for and/or receive a tax assessment reduction, most homeowners do not have the information and experience necessary to successfully represent themselves in a property tax hearing.
A property tax grievance is a formal complaint to challenge the assessed value of your property. In accordance with the New York State Real Property Tax Law, you are entitled to challenge your property tax assessment each year if you feel your property taxes are too high. You have everything to gain and nothing to lose by challenging your assessment.