The Arizona homestead exemption is automatic, meaning that no written claim is required. The dwelling may be a house, condominium, or mobile home.The homestead can't exceed one acre in a city or 160 acres in a rural area. Homeowners should contact their county assessment office (position 48) for a copy of their county's homestead and farmstead application form. Applications. Homestead applications may be filed from December 15 through March 1 (or the next official business day should March 1 fall on a weekend). A homestead exemption is a legal provision that shields a home from some creditors following the death of a homeowner's spouse or the declaration of bankruptcy. An individual with a disability; An older adult; A veteran; A law enforcement official or first responder with a disability. Nevertheless, a waiver of exemption may be redeemed for certain taxpayers that fail to timely file an exemption application. The deadline for property owners to apply with the County Assessment Office is March 1 of the next year. This must be your primary residence.