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  5. ›RFP Professional Auditing Services

County of Sonoma·California

RFP Professional Auditing Services

Closes 10/9/2026$150k – $300kRequest for ProposalLogin required
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Description

The County of Sonoma is seeking proposals from qualified certified public accounting firms to perform an independent audit of the County’s financial statements and related reports in accordance with GAAP, GASB pronouncements, and applicable audit standards. The audit will cover the Annual Comprehensive Financial Report, Single Audit Report, OPEB Schedule, Schedule of Expenditures of Federal Awards, and supporting schedules. Bidders must submit a unit bid price of $0.01 with a detailed cost proposal; the County will evaluate based on actual costs presented. The contract will require compliance with the County’s Living Wage Ordinance ($23.84/hr effective July 1, 2026) and coordination with the Auditor‑Controller‑Treasurer‑Tax Collector office. • Perform an independent audit of the County’s financial statements and related schedules. • Deliver required reports (ACFR, Single Audit, OPEB, etc.) complying with GAAP and GASB. • Provide detailed cost breakdown despite the $0.01 unit price placeholder; ensure living‑wage compliance for all staff.

Attached files

The solicitation documents live at the source — open the bid source above to download them.

Contact

Phillip Whipple(Buyer)

[email protected].

Key dates

Opened
9/4/2026
Closes
10/9/2026

Last updated

Details

Type
Request for Proposal
Industry
Consulting Services
NAICS
541211
Solicitation №
0000002195

Budget estimate

$150,000 – $300,000

The audit of a county’s full financial statements typically ranges from $150,000 to $300,000, depending on the complexity of the entity, the number of component units, and the depth of reporting required (ACFR, Single Audit, OPEB, etc.). Given the extensive deliverables and compliance obligations, a mid‑size CPA firm could expect a budget in the low‑to‑mid six‑figure range. Factors influencing the final amount include the firm’s staffing structure, hourly rates, and any supplemental services such as advisory or post‑audit support.

AI estimate from the solicitation

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