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Auditor-Controller Treasurer-Tax Collector Department

Audit Division
County Of Sonoma › Administrative Support & Fiscal Services › Auditor-Controller-Treasurer-Tax Collector › Divisions › Audit › Audit Reports
Audit Division

Audit Reports

This page provides copies of all audit reports published by the Audit Division, organized by fiscal year of the audited period. Please contact the Audit Division if you are interested in obtaining audits older than those published here.

Fiscal Year Ending June 30, 2025

Fiscal Year Ending June 30, 2023

Green Valley Cemetery District Agreed Upon Procedures Report (PDF: 273 KB)

Sheriff's Concealed Carry Weapon Licesnses Audit Report (PDF: 210 KB)

CSA No. 470 Fire Services Audit (PDF: 545 KB)

Contract Compliance Audit Report: Charles M. Schulz-Sonoma County Airpot (PDF: 587 KB)

CalFresh FNS-209- June 30, 2023 Validation Report (PDF: 324 KB)

Human Services My Pathway Program Services and Sonoma County Youth Ecology Corps Monitoring Report (PDF: 354.5 KB)

CAL-Card 2nd Follow-Up Audit Report (PDF: 256.3 MB)

Sheriff's Office Special Appropriations Fund Audit Report (PDF: 228 KB)

Treasury Investment Pool Audit - 1st Quarter (PDF: 257 KB)

Treasury Investment Pool Audit - 2nd Quarter (PDF: 268 KB)

Treasury Investment Pool Audit - 3rd Quarter (PDF: 228 KB)

Treasury Investment Pool Audit - 4th Quarter (PDF: 298 KB)

Fiscal Year Ending June 30, 2022

Transient Occupancy Tax (TOT) Operator Collections and Remittances Compliance Audit Report (PDF: 770.9 KB)

Sonoma County Procurement Process Audit Report (PDF: 1.19 MB)

Green Valley Cemetery District (PDF: 201.7 KB)

Abandoned Vehicle Abatement Program Audit (PDF: 361 KB)

Transient Occupancy Tax Admin Function 2nd Follow-Up (PDF: 260.8 KB)

CSA No. 40 Fire Services Audit (PDF: 342.39 KB)

Sheriff's Office Purchasing Unit (PDF: 796.34 KB)

Russian River Recreation and Park District Annual Report (PDF: 292 KB)

Human Services My Pathway Program Services and Sonoma County Youth Ecology Corps Monitoring Report (PDF: 297KB)

Cash Management Follow-Up (PDF: 231KB)

Treasurer Investment Pool Audit - 1st Quarter (PDF: 305KB)

Treasurer Investment Pool Audit - 2nd Quarter (PDF: 290KB)

Treasurer Investment Pool Audit - 3rd Quarter (PFD: 290 KB)

Treasurer Investment Pool Audit-  4th Quarter (PDF: 226 KB)

Fiscal Year Ending June 30, 2019

Automobile Insurance Fraud Program(PDF: 564 kB)

Compliance Audit: Transient Occupancy Tax Operator Collections & Remittances (PDF: 298 kB)

County Service Area #40 Fire Services(PDF: 596 kB)

Green Valley Cemetery District(PDF: 502 KB)

Roseland Fire Protection District(PDF: 340 kB)

Russian River Recreation and Park District(PDF: 434 kB)

Sheriff's Office Coroner Bureau(PDF: 1.2 MB)

Sheriff's Office Inmate Welfare and Jail Store Trust Fund(PDF: 1.53 MB)

Sheriff's Office Special Appropriation Fund(PDF: 208 kB)

Treasury Investment Pool Compliance Audit, 1st Quarter 2019(PDF: 243 kB)

Treasury Investment Pool Compliance Audit, 2nd Quarter 2019(PDF: 382 kB)

Treasury Investment Pool Compliance Audit, 3rd Quarter 2019(PDF: 340 kB)

Treasury Investment Pool Compliance Audit, 4th Quarter 2019(PDF: 368 kB)

Workers' Compensation Fraud Program(PDF: 510 kB)

Youth Education and Employment Program Monitoring Audit(PDF: 431 KB)

Fiscal Year Ending June 30, 2016

Abandoned Vehicle Abatement(PDF: 261 kB)

Advertising Fund(PDF: 224 kB) 

Airport Lease Follow Up Audit(PDF: 175 kB)

Cal Card Program Audit Follow-up(PDF: 216 kB)

County Service Area #40 Fire Services(PDF: 704 kB) 

DTPW Contract Compliance Audit - Refuse Analysis Follow Up(PDF: 176 kB)

Green Valley Cemetery District(PDF: 502 KB)

Northern Sonoma County Air Pollution Control District-Follow-up(PDF: 190 kB)

Probation Department Juvenile Records and Accounts(PDF: 198 kB) 

Russian River Recreation and Park District(PDF: 247 kB)

Sheriff's Civil Bureau Audit Report(PDF: 123 kB)

Shiloh Public Cemetery District Annual Report(PDF: 252 kB)

Sonoma County Open Space District-Follow up Audit(PDF: 169 kB)

Sonoma County Tourism BIA Follow-up AUP(PDF: 271 kB)

Transient Occupancy Tax Admin Function Follow-Up Audit(PDF: 208 kB) 

Transient Occupancy Tax Operator Collections & Remittance Compliance Audit(PDF: 762 kB)

Veterans Buildings Concessions Agreements Audit(PDF: 269 kB) 

Worker's Compensation Insurance Fraud(PDF: 242 kB)

Youth Education and Employment Program Monitoring(PDF: 174 kB)

Fiscal Year Ending June 30, 2015

Airport Leases (PDF: 420 kB)

Advertising Fund (PDF: 322 kB)

County Service Area #40 Fire Services (PDF: 404 kB)

DTPW Contract Compliance Audit-Refuse Rate Analysis (PDF: 1.29 MB)

Economic Development Board & Foundation (PDF: 262 kB)

Green Valley Cemetery District(PDF: 502 KB)

Probation Department Juvenile Records and Accounts (PDF: 369 kB)

Russian River Recreation and Park District (PDF: 804 kB)

Sea Ranch Zone 2 Contract Compliance and Follow Up Review (PDF: 206 kB)

Sheriff's Office Inmate Welfare and Jail Store Trust Funds (PDF: 361 kB)

Shiloh Public Cemetery District (PDF: 280 kB)

Sonoma County Payroll Process (PDF: 836 kB)

Treasury Investment Pool Compliance Audit 1st Quarter 2015 (PDF: 163 kB)

Treasury Investment Pool Compliance Audit 2nd Quarter-2015 (PDF: 170 kB)

Treasury Investment Pool Compliance Audit 3rd Quarter-2015 (PDF: 218 kB)

Treasury Investment Pool Compliance Audit 4th Quarter-2015 (PDF: 214 kB)

Youth Education and Employment Program Monitoring (PDF: 134 kB)

Waste Management Agency (PDF: 261 kB)

Worker’s Comp Insurance Fraud (PDF: 255 kB)