Auditor's Office

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 and re-elected in 2019 and 2023. The Auditor’s Office is responsible for internal audit services and civil wage theft, minimum wage, and prevailing wage enforcement. Read our 2023 Strategic Plan(PDF, 3MB).

Over 40 Years of Experience

Auditor Timothy O'Brien at his office.

Denver’s Auditor is unique because Auditor O’Brien was elected by the people and is independent from all other citywide elected officials and city operational management. He works independently from the Mayor’s Office and the City Council to maintain objectivity and offer frank, truthful reports for the betterment of Denver.

Denver Auditor Timothy M. O’Brien, CPA, has more than 40 years of auditing and accounting experience. Auditor O’Brien strives to bring greater clarity, transparency, and accountability to Denver’s city government for its residents. Elected in 2015 — and reelected in 2019 and 2023 — Timothy O’Brien is distinguished from his predecessors as a professional auditor.

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Contact Us

Auditor’s Office

201 W. Colfax Ave., #705
Denver, CO 80202

Hours of operation:

9 am – 5 pm, Monday – Friday 

For wage specific complaints:
720-913-WAGE (9243)

Contact our Denver Labor analysts to coordinate picking up restitution checks.

Additional contact information

Learn About Denver Auditor's Office Work

Ask the Auditor

Ask The Auditor is our monthly series of informative short videos to help expand your understanding of our work in the the Auditor’s Office. If you have a question for the Auditor, submit it to, and maybe your question will be the next one we’ll answer in the next episode.

Denver Labor Tutorials

Contractors working on Denver projects are expected to regularly report their payroll information to show compliance with prevailing wage. To do this, we use a system called LCPtracker. Watch our LCPtracker tutorial videos to learn about how to use this certified payroll tool.

Auditor O'Brien Official Headshot

Denver Auditor

Denver Auditor's Office
201 W. Colfax Ave. #705 Denver, CO 80202
Call: 720-913-5000
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