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The Assessor's Office is responsible for the review and approval of all real property tax exemptions.

All applications and/or renewals for real property tax exemptions must be filed with the Assessor's Office, no later than March 1st of each year. Please direct ALL exemption questions to this department.

Assessor’s Office: (631) 224-5585
STAR Office: (631) 224-5058
Web Link: www.islipny.gov/departments/assessor