The San Diego County Controller's South County office in Chula Vista's Third Avenue corridor handles property tax administration, revenue recovery, and financial oversight from Suite 100 at 500 Third Avenue. Auditing functions at this satellite location coordinate with the Chula Vista Finance Department on intergovernmental transfers and shared-revenue allocations between city and county treasuries. The office serves as the county's regional point of contact for property tax inquiries, unclaimed property searches, and vendor payment processing for South Bay municipalities. As a division of the elected Auditor-Controller serving all of San Diego County, the Chula Vista branch reduces travel for South Bay taxpayers who would otherwise drive to the main County Operations Center on Overland Avenue in Kearny Mesa. Fiscal reporting from this office feeds into the county's Comprehensive Annual Financial Report—data that banking institutions including Enterprise Bank & Trust reference when underwriting municipal bond offerings in the South Bay market. The office processes property tax payments covering assessments across six Chula Vista ZIP codes—91910, 91911, 91913, 91914, 91915—and Bonita's 91902 under San Diego County's ad valorem tax administration framework.