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Timothy M O'Brien, CPA Denver Auditor

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Timothy M O'Brien, CPA Denver Auditor

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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.

10/30/2026

👻 Something spooky is lurking in government operations! 🎃

This Halloween, we're exposing three monsters that make accountability a nightmare:

🌑 The Opacity Monster — Keeps information hidden in the shadows.

💸 The Spending Beast — Loves wasting public resources without thinking about the consequences.

📂 The Record-Keeping Ghost — Makes documentation disappear into thin air!

They may look cute, but the risks they represent are anything but.

🔎 At the Denver Auditor's Office, we work to shine a light on risks, promote transparency, and strengthen accountability.

👉 Swipe to meet the monsters!

Scary monsters. Real risks. That's why we audit.

10/30/2026

“I cannot think of a more public financial document that the city produces other than the budget. It is where the city articulates its priorities to the community in a financial document. I think it should be subject to audit.”

9News reached out to Auditor O’Brien and asked about the City Budget Process audit, which has stalled since the city has not produced specific requested documents.

“What we are asking for is what supports the budget document, the narrative that goes with the budget, and how did you get there.”

The City Budget Process audit remains in progress after starting last year.

10/28/2026

Accountability That Lasts.

An audit plan is more than a list of what we intend to examine. It reflects a standard for how independent oversight should work: professional, independent, objective, and connected to the community.

As Auditor Timothy M. O’Brien presents his final annual Audit Plan, that standard remains at the center of the work.

The people who hold public office change. The standard for accountability should not.

10/28/2026

10/26/2026

Accountability that lasts. Where Denver lives.

From rental licensing and parks to homeless shelter services and public libraries, Denver’s 2027 Audit Plan focuses on city services that affect residents’ everyday lives.

Through independent audits, we work to strengthen accountability, transparency, and how city government serves our community.

Explore the full 2027 Audit Plan: https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Auditors-Office/Audit-Services/2027-Audit-Plan

10/23/2026

Early voting makes it easier to participate on your schedule — and ballot drop boxes offer a convenient way to return your ballot before Election Day.

Democracy depends on participation, and accountability depends on an engaged public.

Find your nearest ballot drop box, vote, and stay engaged.

10/21/2026

Accountability That Lasts.

Denver’s 2027 Audit Plan reflects a standard for oversight that is professional, independent, objective, and connected to the community.

It examines both the services residents experience every day and the complex risks operating behind the scenes — informed by community concerns, data, emerging issues, and independent risk assessment.

The people who hold public office change. The standard for accountability should not.

Read the whole plan: https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Auditors-Office/Audit-Services/2027-Audit-Plan

10/19/2026

Audits of homeless services, Denver International Airport and tax increases feature in the “2027 Audit Plan” from the Denver Auditor’s Office, released today.

This final annual audit plan from Denver’s independent elected Auditor, Timothy’ M. O’Brien, CPA, reflects the exemplary standard he set throughout his tenure.

Read the plan at : https://denvergov.org/Government/Agencies-Departments-Offices/Agencies-Departments-Offices-Directory/Auditors-Office/Audit-Services/2027-Audit-Plan

Address

Denver, CO

Opening Hours

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

Telephone

(720) 913-5000

Website

https://denverauditor.org/

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