You must file with the county or city where your home is located. Each county has different applications and required documents.The homestead exemption can decrease the taxable value of your home, so you'll pay fewer property taxes. Contact the Registrar-Recorder's office where the property is located for fees and filing addresses. In Los Angeles County call (800) 201-8999, option 2. Homestead: This exemption can help homeowners reduce state property taxes and protect surviving spouses from creditors. Use the property tax relief calculator on the Property Search website to see if your property has the Homestead Exemption. Gwinnett County grants any homeowner exemptions. Loan Assistance Tool.