| Business | Phone |
| Orange County Assessor Office 12 Civic Center Plz, Santa Ana 92701 | (714) 834-2727 |
| Orange County Assessor Office 630 N Broadway # 142, Santa Ana 92701 | (714) 834-2727 |
| Orange County Auditor Contller 12 Civic Center Plz, Santa Ana 92701 | (714) 834-2450 |
| Orange County Auditor Office 12 Civic Center Plz # G56c, Santa Ana 92701 | (714) 834-5313 |
| Orange County Tax Collector 12 Civic Center Plz, Santa Ana 92701 | (714) 834-3411 |
| Orange County Treasurer 12 Civic Center Plz, Santa Ana 92701 | (714) 834-2911 |