The typical deadline for filing a Collin County homestead exemption application is between January 1 and April 30. Collin County property owners can download homestead exemption applications and other related forms from the Collin CAD website.Below, we have compiled the proper form for each DFW County. 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. General Residence Homestead: You may only apply for residence homestead exemptions on one property in a tax year. Filing a homestead exemption is free and simple for anyone to complete themself. Below are the local tax accessor office's. Click the link to find, download, and fill out the form to apply for exemption. How Do I Apply for an Exemption and Fill Out a Homestead Exemption Form?