It is a one-time filing, as long as it remains your primary residence. The Disabled Veterans' Exemption reduces the property tax liability on the principal place of residence of qualified veterans.A disabled veteran property exemption claim form for San Diego county can be found here. The County Assessor administers the homeowner tax exemption program, which allows homeowners to claim a. 100 Percent Disabled Veterans Exemption (Tax Code Section 11.131(b)). Additionally, if you get a different exemption, such as the Disabled Veteran's Exemption, you won't be eligible for this one.