The typical deadline for filing a Collin County homestead exemption application is between January 1 and April 30. File the Residential Homestead Exemption Application with the Central Appraisal District of Collin County (250 W. Eldorado Pkwy, McKinney, TX 75069) to obtain the exemption.Contact Information. Today we're actually applying and doing the homestead filing so you know how it gets done. Going over how to fill out your residential homestead tax exemption application for Collin County. Fill out the other side of this application completely. Collin County homeowners can download a homestead exemption application here. Eldorado Pkwy, McKinney, TX 75069. There is no fee to file the homestead exemption form. Bought a primary residence within the past year in Texas?