The typical deadline for filing a Collin County homestead exemption application is between January 1 and April 30. Fill out the other side of this application completely.You may only apply for residence homestead exemptions on one property in a tax year. Fill out the other side of this application completely. Tarrant County homeowners can complete an online homestead exemption application or download the required form here. Bought a primary residence within the past year in Texas? It's time to file for your Texas Homestead Exemption. To apply for an exemption, call the Collin County Appraisal District at (469) 742-9200 or Denton County Appraisal District at (940) 349-3800. Edit, sign, and share homestead exemption collin county tx online. No need to install software, just go to DocHub, and sign up instantly and for free.