How can a homeowner see which exemptions were applied to their home? Check the Property Details, then review the Exemption History and Status section.To check the exemptions you are receiving, go to Your Property Tax Overview. Join us for a workshop to learn about the Cook County Assessor's Office and homeowner exemptions. Cook County homeowners may take advantage of several valuable property-tax-saving exemptions. You may file up to 4 exemptions. Registration Complete and remit the Gambling Machine Tax Registration Application form to the mailing address noted on the form. Deadline to file for Cook County Tax Exemptions. Form 1040 Instructions.