EX01: Homestead Exemption Application (First time applications only). Click "Begin Filing" and follow the instructions.You can apply for the exemption online or at the Township Assessor's office. Application for Exemption Instructions Details on how to fill out and mail your Property Taxation Exemption Form , PDF: Application for Exemption Property Tax. The Cook County Assessor's Office automatically renews Homeowner Exemptions for properties that were not sold to new owners in the last year. Conserving the lands and waters on which all life depends. The name of the Village was changed again when, with the creation of Lake County in 1839, Libertyville was made the county seat. Robert E. Merriam. Chairman.