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. The Auditor’s Office is responsible for internal audit services and prevailing wage and minimum wage enforcement.

Auditor Timothy O'Brien at his office.
Over 40 Years of Experience

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’s 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 on behalf of its residents and anyone who cares about our community. Timothy O’Brien is distinguished from his predecessors by being a professional auditor.  He is a licensed Certified Public Accountant and holds the designations of Chartered Financial Analyst and Chartered Global Management Accountant.

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.


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Denver Auditor

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Denver Auditor Timothy M. O'Brien and the message

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Contact Us

Auditor’s Office

201 W. Colfax Ave., #705
Denver, CO 80202  720-913-5000

Hours of Operation:

9 am – 5 pm, Monday – Friday

***Due to COVID-19, our office is not currently open for in-person services***

For minimum wage specific complaints:

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


Additional Contact Information



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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