You must file a document called a "Declaration of Homestead". I am applying for a residence homestead exemption for property owners who are age 65 or older.In this video we're gonna show you how to fill out your homestead exemption. I keep hearing about how I should apply for homestead exemption to save on property taxes? Edit, sign, and share homestead exemption bexar county online. No need to install software, just go to DocHub, and sign up instantly and for free. Property Tax Information - The City of San Antonio. Local taxing units set up rates and collect property tax. Learn how property values are determined. Residence Homestead Exemption Application.