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Welcome to the Denver Auditor's office. Auditor Timothy M. O'Brien, CPA is Denver's Auditor.

Welcome to the Office of Auditor Timothy M. O'Brien, CPA

Denver has an independently-elected Auditor to serve as a check and balance on Denver's "strong mayor" form of government. Timothy M. O'Brien, CPA, was elected to a four-year term as Denver's 24th Auditor in 2015. The Auditor's Office is responsible for internal audit services and prevailing wage enforcement.

Ask the Auditor

Episode 4: How We Choose Audits

How does the Office of the Auditor select audits every year? Who can suggest an audit? Denver Auditor Timothy O'Brien walks you through the risk assessment process and what happens when an audit is over in this episode of Ask the Auditor. 

If you have questions for the Denver Auditor, send them to, and maybe your question will be on the next episode of Ask the Auditor.

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Audit Services

Audit ServicesConducting independent financial, compliance, and performance audits of City agencies, programs, and contracts.

Audit Reports
Other Reports
Peer Review



Prevailing Wage

Prevailing WageEnforcing the City’s prevailing wage requirements to ensure that contractors and subcontractors working for the City pay their employees nothing less than the appropriate rate for the classification of worker.




Audit Committee

Audit CommitteeAssisting the Auditor in the Auditor’s oversight responsibilities of the integrity of the City’s finances and operations. Receives the results of the internal audits conducted by the Auditor.