Timothy M O'Brien, CPA Denver Auditor

Timothy M O'Brien, CPA Denver Auditor Denver's elected Auditor, Timothy M. O'Brien, brings 40 years of auditing and accounting experience to the oversight role of this independent City office.

How can performance audits improve people’s daily lives?In a new article for the Association of Local Government Auditor...
08/07/2026

How can performance audits improve people’s daily lives?

In a new article for the Association of Local Government Auditors' Summer 2026 Quarterly publication, Audit Manager Kharis Eppstein explores how audits can lead to safer sidewalks, better housing conditions, stronger public services, and greater accountability.

We are proud to see our auditors sharing Denver’s experience with the broader local government auditing community.

Read “The Positive Power of Performance Audits,” which is linked in the comments.

Statement from Auditor O'Brien following 's departure from Denver City Council.
08/06/2026

Statement from Auditor O'Brien following 's departure from Denver City Council.

Why does auditor independence matter?Denver’s Auditor is elected by the people and works independently from the Mayor’s ...
08/05/2026

Why does auditor independence matter?

Denver’s Auditor is elected by the people and works independently from the Mayor’s Office and the city agencies being reviewed.

This independence allows auditors to follow the evidence, ask difficult questions, and report findings objectively, strengthening transparency, accountability, and public trust.

Learn more about audit work at: https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Auditors-Office

You don’t have to be an auditor to understand an audit report.Start with these four sections:Auditor’s Letter: What is t...
08/03/2026

You don’t have to be an auditor to understand an audit report.
Start with these four sections:

Auditor’s Letter: What is the audit about?
Findings: What problems or risks did they identify?
Recommendations: What changes did auditors suggest?
Agency response: What did the agency agree to do?

You can also review the Highlights for the report’s most important takeaways.

Audit reports are public tools designed to help everyone understand how the city government is working.

Happy 150th birthday, Colorado! 🎉For 150 years, Colorado has grown into a vibrant and diverse state shaped by people of ...
07/31/2026

Happy 150th birthday, Colorado! 🎉

For 150 years, Colorado has grown into a vibrant and diverse state shaped by people of many cultures, backgrounds, and experiences.

As we celebrate this milestone, we recognize the communities and generations of Coloradans who have helped shape the state we call home.

The Denver Auditor’s Office is proud to support a future built on accountability, transparency, and strong public service.

Happy Colorado Day! 🏔️

Audit reports are public tools for accountability.Residents can use our findings and recommendations to ask questions, c...
07/28/2026

Audit reports are public tools for accountability.

Residents can use our findings and recommendations to ask questions, contact city leaders, follow agency progress, and stay informed about how public resources are managed.

Our work does not end when a report is published. Through follow-up audits, we continue tracking whether agencies acted on recommendations — and where work still remains.

Great work deserves to be recognized.This quarter, we’re celebrating our Most Valuable Employees for their hard work, te...
07/24/2026

Great work deserves to be recognized.

This quarter, we’re celebrating our Most Valuable Employees for their hard work, teamwork, and dedication to serving Denver.

Thank you, Tyson, for the care and commitment you bring to our office and our community.

Audit recommendations are more than suggestions in a report. They give city agencies a clear path to address risks, stre...
07/23/2026

Audit recommendations are more than suggestions in a report. They give city agencies a clear path to address risks, strengthen operations, and improve accountability.

Findings become recommendations. Recommendations guide action. Follow-up tracks progress.

Employees leaving the city deserve to be paid what they are owed.Our recent Employee Separation Process Follow-Up found ...
07/20/2026

Employees leaving the city deserve to be paid what they are owed.

Our recent Employee Separation Process Follow-Up found that the Department of Finance implemented many of the Auditor’s recommendations to help ensure former city employees receive earned pay and benefits.

Follow-up audits help track progress after a report is published — and show where work still remains.

Read the report: https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Auditors-Office/Audit-Services/Audit-Reports/Employee-Separation-Process-Follow-Up

Address

Denver, CO

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

(720) 913-5000

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