| Business | Phone |
| Assessor-Business 600 Texas St, Fairfield 94533 | (707) 421-6232 |
| Assessor-Drafting & Mapping 701 Texas St, Fairfield 94533 | (707) 421-6240 |
| Assessor-Exemptions 600 Texas St # 106, Fairfield 94533 | (707) 421-6265 |
| Assessor-Real Estate & Aprsl 600 Texas St # 201, Fairfield 94533 | (707) 421-6210 |
| Auditor-Payroll 600 Texas St # E, Fairfield 94533 | (707) 421-6285 |
| Solano County Assessor 600 Texas St # 106, Fairfield 94533 | (707) 421-6200 |
| Solano County Auditor-Cntrllr 675 Texas St # 2800, Fairfield 94533 | (707) 421-6280 |
| Solano County Controller 675 Texas St # 2800, Fairfield 94533 | (707) 784-6280 |
| Solano County Tax Collector 600 Texas St, Fairfield 94533 | (707) 421-7485 |
| Solano County Tax Collector 675 Texas St, Fairfield 94533 | (707) 784-7485 |