Your taxes are based on the value of your home, and therefore if you feel that your taxes are too high, you must appeal the value of your property. We recommend that you speak to the Tax Assessor before you consider filing an appeal, or whenever you feel that your property value is not correct. The Tax Assessor can go over your property record card with you, and help you to understand how your property value is determined. If you decide to file an appeal, please note that all appeals must be filed with the Sussex County Board of Taxation, 83 Spring Street, Suite 301, Newton, N.J. 07860 on or before April 1st of the Current Tax Year, (per N.J.S.A. 54:3-21).