Audit Reports

The Audit Services Division produces independent financial and performance audits and other types of assessments of city agencies, programs, finances, technology, and contracts. The resulting recommendations from our work helps strengthen governance, improve performance, enhance efficiency, increase revenues, reduce costs and risks, and improve the quality of services for Denver.

Performance audits review the efficiency and effectiveness of agencies’ work, as well as the overall use of Denver tax dollars.
Financial audits take a close look at an agency’s records and processes to identify errors in reporting and payments and other risks to the city and its reputation.
Contract compliance audits determine whether a third-party vendor — and/or a city agency — is following the terms of a contract.
Information technology audits review the controls and operation of the city’s network, software applications, and cybersecurity processes to make sure they are operating correctly.
Continuous auditing and audit analytics programs help identify high-risk areas of the city by repeatedly performing updated analyses of transactional data from different city databases.

Key audit reports

View recent and search for historical audit reports conducted by our office below:

City Equity Program and Practices Follow-Up

We wanted to determine whether the Mayor’s Office of Social Equity and Innovation effectively designed, implemented, and evaluated its initiatives to achieve its mission, goals, and responsibilities.

Information Technology General Controls

Auditors conducted a cybersecurity assessment of an agency in the City and County of Denver. This assessment found some areas of strength and some areas that need improvement. Because of the security sensitivities involved with this assessment the findings were communicated to the agency separately. This report gives a general overview of information technology general controls.

Microsegmentation

CP Cyber, on behalf of the Auditor's Office, conducted a cybersecurity assessment of an agency in the City and County of Denver. This assessment found some areas of strength and some areas that need improvement. Because of the security sensitivities involved with this assessment the findings were communicated to the agency separately. This report gives a general overview of microsegemenation.

Police Operations and Staffing Follow-Up

We wanted to evaluate the effectiveness of the Denver Police Department’s recruitment and retention practices and determine whether it adequately uses data to assess its resources and ensure effective operations.

Great Hall Construction Follow-Up

We wanted to determine whether Denver International Airport’s Special Projects Division is adequately managing and overseeing the current Great Hall construction project to ensure the airport procured its new contractor in a fair, open, and competitive manner and that the airport is not being overcharged for construction costs on the Great Hall project.

Emergency Medical Response Time

We wanted to determine:
• The degree to which Denver’s 911 response times align with leading practices.
• The extent to which staffing levels affect response times.
• Whether oversight and monitoring are adequate or effective.
• Whether the data used to make decisions is reliable.
• The extent to which contract requirements are complied with.

Citywide Information Technology Purchases Follow-Up

We wanted to assess how well the city’s Technology Services agency enforces Executive Order No. 18 by administering, implementing, and communicating requirements to city leaders and employees — particularly those who buy technology services and equipment on behalf of the city.

City Shelters

We wanted to assess the extent to which the Department of Housing Stability maintains an effective system for monitoring shelter provider performance and spending and to describe recent emergencies, organizational changes, and staffing challenges.

Denver College Affordability Fund Program Follow-up

We wanted to review the tax-funded College Affordability Fund program and determine how well Prosperity Denver Fund and the program’s supported organizations have ensured students were eligible for scholarship and support services reimbursements and whether the amounts paid out were accurate.

Airport Information Technology Vendor Management Follow-Up

We wanted to assess the effectiveness of Business Technologies’ processes for vendor management governance and how well it monitors information technology vendors at Denver International Airport.

Fleet Management

We wanted to determine whether the Department of Transportation & Infrastructure’s Fleet Management Division is adequately managing and overseeing the city’s fleet. This includes evaluating the fleet’s funding structure, assessing performance against established goals, and assessing controls over assets.

Construction Contractor Prequalification Process

We audited the city’s construction contractor prequalification process to evaluate how efficient the application process is, how effective the Prequalification Board is, and whether the city follows its own rules for contractor prequalification.

Employee Separation Process

We wanted to determine how efficiently and effectively the Department of Finance issues separation payouts to former city employees in an accurate and timely manner, and to determine how effective the city’s policies are on unreturned city property.

Museum of Nature & Science

We evaluated the Denver Museum of Nature & Science’s inventory practices, physical access controls, emergency response plans, and board governance. And we assessed how well city assets at the museum are protected and accounted for and whether the city is providing adequate oversight of the museum building, exhibits, and collections.

Co-Responder Expansion Grant and Contract Compliance Follow-up

We wanted to determine whether the Denver Police Department is effectively monitoring Caring for Denver’s Co-Responder Expansion grant and contract expenditures, whether it is compliant with grant contract requirements, and the extent it verifies the accuracy and reliability of the data WellPower uses for annual reports.

Colorado Youth Detention Continuum Program Grant Compliance

We wanted to evaluate how the city uses state grant funding for the Colorado Youth Detention Continuum Program and to determine whether the Denver Department of Public Safety complies with grant and contract requirements and adheres to city policy.

Residential Trash, Recycling, and Compost Services Follow-up

Our original audit had two objectives:
1. To assess how efficiently and effectively the city is ensuring timely trash, recycling, and compost service for residents and is reducing illegal dumping in city neighborhoods.
2. To evaluate how effectively the city is achieving its environmental goals and improving recycling rates.

Information Technology Risk Management

We audited how the city’s Technology Services agency handles information technology risks and how effectively it oversees a comprehensive risk assessment process to track and address information technology risks citywide.

Etai’s Café Concessions Contract Follow-up

The objective of our original audit was to evaluate whether Denver International Airport’s Concessions Division provides adequate oversight of the Etai’s Café concessions contract, including whether the café is accurately reporting all revenue earned and paying the appropriate rent it owes the city based on its sales.

2024 Briefing on Artificial Intelligence

This briefing on artificial intelligence covers the history of the technology, myths and facts, use case examples, risks, and the 2024 regulatory landscape.

Denver Water City Services Follow-up

The objective of our audit of Denver Water’s city services was to determine whether Denver Water charges the city correctly for water and billing services. Additionally, we assessed the city’s decision-making process to move billing of sewer services away from Denver Water and do it in-house.

Mental Health Services in Denver’s Jail System Follow-up

We wanted to determine whether the Denver Sheriff Department’s
mental health services and programs are effective in providing support for people in jail as well as employees of the Denver jail system.

Phishing Follow-up

We wanted to assess how well the city identifies, prevents, detects, and responds to cybersecurity phishing incidents; the effectiveness of the city’s cybersecurity awareness training by conducting internal and external phishing campaigns; and the effectiveness of the city’s email security tools and whether they are configured appropriately to provide adequate email security.

Cybersecurity: Password Hygiene Follow-up

After following up on the “Cybersecurity: Password Hygiene” assessment report completed with CP Cyber and issued in September 2021, we found some areas of strength and some areas that still need improvement. Because of the information security sensitivities involved with this cybersecurity assessment, we communicated these issues directly with the relevant city agencies for remediation.

Cybersecurity: Network Operations Center Follow-up

After following up on the “Cybersecurity: Network Operations Center” assessment report completed by CP Cyber and issued in December 2021, we found some areas of strength and some areas that still need improvement. Because of the information security sensitivities involved with this cybersecurity assessment, we communicated these issues directly with the relevant city agencies for remediation.

Woody Creek Bakery & Café Concessions Contract

We audited how Denver International Airport oversees and manages its concessions contract with Woody Creek Bakery and Café to assess whether the café is accurately reporting all revenue earned and paying the appropriate rent it owes the airport based on sales

Self-funded Health Plan

We audited the city’s self-funded health plan managed by the Office of Human Resources to determine whether the office is effectively managing the plan.

Semiannual Audit Analytics Update - February 2024

The semiannual update provides a review of the work completed between July and December of 2023. This work includes risk finding analytics, continuous audit results, audit support, and training. The risk finding analytics are used by the office as part of the risk assessment process and require additional audit work to validate.

Denver Golf Operations Follow-up

We wanted to determine whether Denver Golf is meeting key mission and performance objectives.

Residential Permitting

We wanted to determine how effectively the Department of Community Planning and Development manages the city’s residential permitting process to ensure it meets its mission and goals to ensure safe and sustainable building by completing permit application reviews on time.

Construction Manager/General Contractor Delivery Method Follow-up

The objective of the original audit was to determine whether the Department of Transportation & Infrastructure’s construction management was adequate enough to ensure:
1. The city received the scope of work included in its three contracts for the Northfield Fire Station construction project.
2. The city paid the correct amount to build the Northfield Fire Station.

City Council Operations

We wanted to assess the effectiveness of selected City Council operations and controls regarding council office spending oversight, technology asset management, and the transition process for elected members leaving office and assuming office.

Denver Art Museum Follow-up

The objective of the original audit was to assess elements of the city’s relationship with the Denver Art Museum, including agreements and accounting of city-owned assets, and to review selected museum policies and practices as well as the museum board of trustees’ governance of the organization.

Fair Elections Fund Follow-up

The objective of the original audit was to determine whether the Clerk and Recorder’s Office is adequately prepared to administer the Fair Elections Fund ahead of the next municipal election in April 2023.

Neighborhood Food Environments Program Grant Compliance Follow-up

Our objective of the original audit was to determine whether the Denver Department of Public Health and Environment is complying with expenditure requirements under the state grant-funded Neighborhood Food Environments Program and whether the department properly reported grant expenditures to the grant-governing authority and sufficiently monitored grant subrecipients.

Information Technology Vendor Management Follow-up

Our objective of the original audit was to assess the effectiveness of Technology Services’ processes for vendor management governance, continuous monitoring, and compliance with agency policies and procedures..

Affordable Housing

We wanted to determine how well the Department of Housing Stability is efficiently and effectively using taxpayer funds to develop and preserve affordable housing and achieve department goals. And to assess whether the department is prepared to implement new technology that supports its operational objectives, maintains data integrity and security, and fulfills city system-of-record requirements.

Airport Concessions Management Follow-up

The objective of the original audit was to assess how Denver International Airport’s concessionaire contracting practices compare to concessions contracting practices at selected comparable airports and to evaluate whether Denver International Airport’s approach is cost effective and fair.

2015 – 2025 Reports Chronologically

2025 Audits

Great Hall Construction
Follow-up: January 2025
Audit: April 2023

Police Operations and Staffing Follow-up
Follow-up: January 2025
Audit: June 2023

2024 Audits

Construction Manager - General Contractor Project Delivery Method
Follow-up: January 2024
Audit: September 2021

Construction Contractor Prequalification Process
Audit: January 2024

Residential Permitting
Audit: January 2024

Denver Golf Operations
Follow-up: February 2024
Audit: September 2021

Woody Creek Bakery & Café Concessions Contract
Audit: February 2024

Self-funded Health Plan
Audit: February 2024

Semiannual Audit Analytics Update
Update: February 2024

Cybersecurity: Network Operations Center Follow-up
Follow-up: March 2024
Assessment Report: December 2021

Cybersecurity: Password Hygiene Follow-up
Follow-up: March 2024
Assessment: September 2021

Phishing
Follow-up: March 2024
Audit: April 2021

Mental Health in Denver's Jail System Follow-up
Follow-up: March 2024
Audit: June 2022

Denver Water City Services
Follow-up: April 2024
Audit: June 2022

2024 Briefing on Artificial Intelligence
Briefing: May 2024

Etai's Café Concessions Contract
Follow-up: June 2024
Audit: November 2022

Information Technology Risk Management
Audit: June 2024

Residential Trash, Recycling, and Compost Services
Follow-up: August 2024
Audit: November 2022

Colorado Youth Detention Continuum Program Grant Compliance
Audit: August 2024

Museum of Nature & Science
Audit: August 2024

Co-Responder Expansion Grant and Contract Compliance Follow-up
Follow-up: September 2024
Audit: September 2022

Employee Separation Process
Audit: September 2024

Fleet Management
Audit: October 2024

Denver College Affordability Fund Program
Follow-up: November 2024
Audit: July 2023

Airport Information Technology Vendor Management
Follow-up: November 2024
Audit: September 2023

City Shelters
Audit: November 2024

Citywide Information Technology Purchases
Follow-up: December 2024
Audit: May 2023

Medical Emergency Response Time
Audit: December 2024

2023 Audits

Caring for Denver Follow-up
Follow-up: January 2023
Audit: October 2020(PDF, 2MB)

Semiannual Audit Analytics Update
Update: February 2023

Safety and Security of City Facilities Follow-up
Follow-up: February 2023
Original Audit: June 2020(PDF, 3MB)

Administration of Child Welfare Placement Services
Audit: March 2023

Great Hall Construction
Follow-up: January 2025
Audit: April 2023

Homeless Encampments
Audit: April 2023

Airport Parking Shuttle System Follow-up
Follow-up: May 2023
Original Audit: August 2021

Transparency: Public Notice and Engagement Follow-up
Follow-up: May 2023
Original Audit: November 2021

Citywide Information Technology Purchases
Follow-up: December 2024
Audit: May 2023

Expense Report Approval Process Follow-up
Follow-up: June 2023
Original Audit: November 2021

Police Operations and Staffing
Follow-up: January 2025
Audit: June 2023

Cybersecurity: Application Security Follow-up
Follow-up: July 2023
Assessment: June 2022

Denver College Affordability Fund Program
Follow-up: November 2024
Audit: July 2023

Peña Boulevard Improvements Construction Contract Follow-up
Follow-up: August 2023
Original Audit: May 2022

2023 Semiannual Audit Analytics Update
Update: August 2023

Neighborhood Sidewalk Repair Program Follow-up Memo
Follow-up Memo: September 2023
Audit: November 2020(PDF, 8MB)

Airport Information Technology Vendor Management
Follow-up: November 2024
Audit: September 2023

Information Technology Disaster Recovery Follow-up
Follow-up: October 2023
Audit: May 2021

Airport Concessions Management
Follow-up: November 2023
Audit: February 2022

Affordable Housing
Audit: November 2023

Denver Art Museum
Follow-up: December 2023
Audit: January 2021

Fair Elections Fund
Follow-up: December 2023
Audit: May 2022

Neighborhood Food Environments Program Grant Compliance
Follow-up: December 2023
Audit: January 2022

Information Technology Vendor Management
Follow-up: December 2023
Audit: September 2022

City Council Operations
Audit: December 2023

2022 Audits

Neighborhood Food Environments Program Grant Compliance
Follow-up: December 2023
Audit: January 2022

Airport Concessions Management
Follow-up: November 2023
Audit: February 2022

Homeless Services
Follow-up: February 2022
Original Audit: April 2019(PDF, 7MB)

Syringe Access and Sharps Disposal Programs
Follow-up: March 2022
Original Audit: August 2020(PDF, 4MB)

Data Centers:
Follow-up: March 2022
Original Audit: September 2020(PDF, 1MB)

Travel Expenses
Follow-up: March 2022
Original Audit: October 2020(PDF, 3MB)

Airport Capital Assets
Follow-up: April 2022
Original Audit: December 2020(PDF, 7MB)

Records Management
Follow-up: April 2022
Original Audit: May 2021(PDF, 11MB)

Fair Elections Fund
Follow-up: December 2023
Audit: May 2022

Peña Boulevard Improvements Constructions Contract
Follow-up: August 2023
Original Audit: May 2022

Denver Water City Services
Follow-up: April 2024
Audit: June 2022

Mental Health Services in Denver's Jail Systems
Follow-up: March 2024
Audit: June 2022

Cybersecurity: Application Security
Follow-up: July 2023
Assessment: June 2022

Coronavirus Relief Funding
Follow-up: July 2022
Original Audit: July 2021

Compensation Setting Analysis
Follow-up: August 2022
Original Audit: February 2021

City Equity Program and Practices
Audit: August 2022

Co-Responder Expansion Grant and Contract Compliance
Follow-up: September 2024
Audit: September 2022

Information Technology Vendor Management
Follow-up: December 2023
Audit: September 2022

Denver County Jail Building 24 Buildout Contract
Follow-up: October 2022
Original Audit: June 2021

Etai's Café Concessions Contract
Follow-up: June 2024
Audit: November 2022

Residential Trash, Recycling and Compost Services
Follow-up: August, 2024
Audit: November 2022

Jail Safety
Follow-up: December 2022
Original Audit: March 2019(PDF, 48MB)

Parks Legacy Plan
Follow-up: December 2022
Original Audit: October 2021

2021 Audits

Denver Art Museum
Follow-up: December 2023
Audit: January 2021

Workday Post Implementation Assessment
Follow-up: January 2021
Original Audit: December 2019(PDF, 4MB)

Contract Procurement Processes
Follow-up: January 2021
Original Audit: June 2019(PDF, 3MB)

Preserving Affordable Housing
Follow-up: January 2021
Original Audit: August 2019(PDF, 16MB)

Compensation Setting Analysis
Follow-up: August 2022
Audit: February 2021

2020 End-Year Audit Analytics Update
Update: February 2021

Property Tax Assessment Processes
Follow-up: February 2021
Original Audit: October 2019(PDF, 4MB)

Phishing
Follow-up: March 2024
Audit: April 2021

Westin Hotel Revenue
Follow-up: April 2021
Audit: February 2019(PDF, 2MB)

Interstate Highway Construction Inc. Contract
Follow-up: April 2021
Audit: November 2019(PDF, 2MB)

Information Technology Disaster Recovery
Follow-up: October 2023
Audit: May 2021

Records Management
Follow-up: April 2022
Audit: May 2021

Airport Improvement Grants
Follow-up: May 2021
Original Audit: September 2019(PDF, 5MB)

Cybersecurity Asset Management
Assessment: June 2021

Denver County Jail Building 24 Buildout Contract
Follow-up: October 2022
Examination: June 2021

Coronavirus Relief Funding
Follow-up: July 2022
Audit: July 2021

County Courts IT General Controls
Follow-up: June 2021
Original Audit: August 2018(PDF, 1MB)

Denver International Airport Cybersecurity Operations
Follow-up: June 2021
Original Audit: September 2019(PDF, 5MB)

High Intensity Drug Trafficking Areas Grant
Follow-up: July 2021
Original Audit: March 2020(PDF, 4MB)

2021 Semi-Annual Audit Analytics Update
Audit Analytics Update: August 2021

Airport Parking Shuttle System
Follow-up: May 2023
Original Audit: August 2021

Prevailing Wage Rate Determination Process
Follow-up: August 2021
Original Audit: September 2020(PDF, 2MB)

Denver Public Trustee
Follow-up: August 2021
Original Audit: (PDF, 10MB)March 2019(PDF, 10MB)

Cybersecurity Password Hygiene
Follow-up: March 2024
Assessment: September 2021

Construction Manager/General Contractor Project Delivery Method
Follow-up: January 2024
Audit: September 2021

Denver Golf Operations
Follow-up: February 2024
Audit: September 2021

Hensel Phelps Construction Contract
Follow-up: September 2021
Original Audit: September 2020(PDF, 3MB)

Employment Services Cluster Grants
Follow-up: September 2021
Original Audit: August 2020(PDF, 2MB)

Parks Legacy Plan
Follow-up: December 2022
Audit: October 2021

Edward Byrne Memorial Justice Assistance Grant
Follow-up: October 2021
Original Audit: August 2020(PDF, 4MB)

Expense Report Approval Process
Follow-up: June 2023
Original Audit: November 2021

Transparency: Public Notice and Engagement
Follow-up: May 2023
Original Audit: November 2021

Minority/Women and/or Disadvantaged Business Program
Follow-up: November 2021
Original Audit: June 2020(PDF, 2MB)

Open Records Request Process
Follow-up: November 2021
Original Audit: May 2020(PDF, 3MB)

City Real Estate Portfolio Practices
Follow-up: November 2021
Original Audit: May 2020(PDF, 3MB)

Marijuana Taxation
Follow-up: November 2021
Original Audit: April 2020(PDF, 3MB)

Library Financial Processes
Follow-up: November 2021
Original Audit: June 2020(PDF, 3MB)

Public Works Asset Management Software Applications
Follow-up: November 2021
Original Audit: January 2020(PDF, 3MB)

Cybersecurity: Network Operations Center
Follow-up: March 2024
Assessment: December 2021

Denver Employee Retirement Plan Actuarial Valuation
Follow-up: December 2021
Original Audit: November 2019(PDF, 3MB)

Ethics
Follow-up: December 2021
Original Audit: February 2020(PDF, 3MB)

Accounts Receivable – Denver International Airport
Follow-up: December 2021
Original Audit: September 2019(PDF, 9MB)

2020 Audits

Airport Capital Assets
Follow-up: April 2022
Original Audit: December 2020(PDF, 7MB)

Property Tax Spending for Intellectual and Developmental Disabilities
Follow-up: December 2020(PDF, 1MB)
Audit: August 2019(PDF, 21MB)

Neighborhood Sidewalk Repair Program
Follow-up Memo: September 2023
Audit: November 2020(PDF, 8MB)

Denver Preschool Program
Follow-up: November 2020(PDF, 2MB)
Audit: October 2019(PDF, 14MB)

Halcyon Construction Inc. On-Call Contract
Follow-up: November 2020(PDF, 2MB)
Audit: March 2019(PDF, 44MB)

Denver County Courts – Court Operations
Follow-up: November 2020(PDF, 1MB)
Audit: December 2018(PDF, 6MB)

Urban Area Security Initiative Grant
Follow-up: November 2020(PDF, 3MB)
Audit: October 2019(PDF, 10MB)

Caring For Denver
Follow-up: January 2023
Audit: October 2020(PDF, 2MB)

Travel Expenses
Follow-up: March 2022
Original Audit: October 2020(PDF, 3MB)

Prevailing Wage Rate Determination Process
Follow-up: August 2021
Original Audit: September 2020(PDF, 2MB)

National Western Center – Hensel Phelps Construction Contract
Follow-up: September 2021
Original Audit: September 2020(PDF, 3MB)

Data Centers
Follow-up: September 2020(PDF, 1MB)
Audit: January 2019(PDF, 17MB)

Workers’ Compensation Program
Follow-up: September 2020(PDF, 1MB)
Audit: October 2018(PDF, 5MB)

2020 Mid-Year Audit Analytics Update
Report: August 2020(PDF, 2MB)
Report: January 2020(PDF, 1MB)

Syringe Access and Sharps Disposal Programs
Follow-up: March 2022
Original Audit: August 2020(PDF, 4MB)

Employment Services Cluster Grants
Follow-up: September 2021
Original Audit: August 2020(PDF, 2MB)

Edward Byrne Memorial Justice Assistance Grant
Follow-up: October 2021
Original Audit: August 2020(PDF, 4MB)

DIA – Airport Security
Follow-up: August 2020(PDF, 1MB)
Audit: September 2018(PDF, 2MB)

Minority/Women and/or Disadvantaged Business Program
Follow-up: November 2021
Original Audit: June 2020(PDF, 2MB)

Library Financial Processes
Follow-up: November 2021
Original Audit: June 2020(PDF, 3MB)

Safety and Security of City Facilities
Follow-up: February 2023
Audit: June 2020(PDF, 3MB)

Workday User Access Controls
Follow-up: June 2020(PDF, 2MB)
Audit: April 2019(PDF, 5MB)

Affordable Housing
Follow-up: June 2020(PDF, 2MB)
Audit: December 2018(PDF, 4MB)

Patch Management
Audit: May 2020(PDF, 2MB)

Open Records Request Process
Follow-up: November 2021
Original Audit: May 2020(PDF, 3MB)

City Real Estate Portfolio Practices
Follow-up: November 2021
Original Audit: May 2020(PDF, 3MB)

Marijuana Taxation
Follow-up: November 2021
Original Audit: April 2020(PDF, 3MB)

Wastewater Management Contractor Practices
Follow-up: April 2020(PDF, 2MB)
Audit: July 2017(PDF, 2MB)

High Intensity Drug Trafficking Areas Grant
Follow-up: July 2021
Original Audit: March 2020(PDF, 4MB)

Capital Assets
Follow-up: March 2020(PDF, 2MB)
Audit: April 2018(PDF, 3MB)

Special Revenue Funds
Follow-up: March 2020(PDF, 1MB)
Audit: October 2017(PDF, 5MB)

Board of Ethics and Clerk and Recorder’s Office
Follow-up: December 2021
Audit: February 2020(PDF, 3MB)

Public Works Asset Management Software Applications
Follow-up: November 2021
Original Audit: January 2020(PDF, 3MB)

Department of Finance and Public Works – Debt Management
Follow-up: January 2020(PDF, 862KB)
Audit: May 2018(PDF, 2MB)

2019 Audits

Workday Post Implementation Assessment
Follow-up: January 2021
Original Audit: December 2019(PDF, 4MB)

Governmental Activities Receivables
Follow-up: December 2019(PDF, 2MB)
Audit: January 2018(PDF, 2MB)

Compensation and Benefits
Follow-up: December 2019(PDF, 1MB)
Audit: May 2018(PDF, 1MB)

Contract Controls in Alfresco
Follow-up: December 2019(PDF, 1MB)
Audit: December 2017(PDF, 2MB)

Purchasing and Payment Processes
Follow-up: December 2019(PDF, 831KB)
Audit: October 2018(PDF, 9MB)

Indirect Cost Accounting Practices
Follow-up: December 2019(PDF, 1MB)
Audit: June 2018(PDF, 2MB)

Denver Employees Retirement Plan Actuarial Valuation
Follow-up: December 2021(PDF, 727KB)
Audit: November 2019(PDF, 3MB)

Interstate Highway Construction Inc. Contract
Follow-up: April 2021
Audit: November 2019(PDF, 2MB)

Building Permits
Follow-up: November 2019(PDF, 1022KB)
Audit: August 2017(PDF, 3MB)

Airport Parking Revenue
Follow-up: November 2019(PDF, 992KB)
Audit: February 2018(PDF, 2MB)

PetroPro Engineering Inc. Contract
Follow-up: November 2019(PDF, 920KB)
Audit: March 2018(PDF, 2MB)

Flog, LLC and Willis Case
Follow-up: November 2019(PDF, 854KB)
Audit: August 2018(PDF, 2MB)

Pahaska Tepee Concessions, LLC
Follow-up: November 2019(PDF, 1MB)
Audit: August 2018(PDF, 2MB)

Workforce Development
Follow-up: November 2019(PDF, 2MB)
Audit: July 2018(PDF, 2MB)

Denver Preschool Program
Follow-up: November 2020(PDF, 2MB)
Audit: October 2019(PDF, 14MB)

Property Tax Assessment Processes
Follow-up: (PDF, 2MB)February 2021(PDF, 2MB)
Original Audit: October 2019(PDF, 4MB)

Urban Area Security Initiative Grant
Follow-up: November 2020(PDF, 3MB)
Audit: October 2019(PDF, 10MB)

Airport Improvement Grants
Follow-up: May 2021
Original Audit: September 2019(PDF, 5MB)

Accounts Receivable – Denver International Airport
Follow-up: December 2021(PDF, 1MB)
Audit: September 2019(PDF, 9MB)

Cybersecurity Operations – Denver International Airport
Follow-up: June 2021
Original Audit: September 2019(PDF, 5MB)

Denver Botanic Gardens
Follow-up: September 2019(PDF, 2MB)
Audit: July 2018(PDF, 4MB)

Preserving Affordable Housing
Follow-up: January 2021
Original Audit: August 2019(PDF, 16MB)

Property Tax Spending for Intellectual and Developmental Disabilities
Follow-up: December 2020(PDF, 1MB)
Audit: August 2019(PDF, 21MB)

Data Analytics Update
Audit: July 2019(PDF, 1MB)

Aramark Concessions Revenues
Follow-up: July 2019(PDF, 2MB)
Audit: April 2018(PDF, 2MB)

Parks Permitting Program
Follow-up: July 2019(PDF, 831KB)
Audit: April 2017(PDF, 3MB)

Contract Procurement Processes
Follow-up: January 2021
Audit: June 2019(PDF, 3MB)

Software Asset Management
Follow-up: June 2019(PDF, 689KB)
Audit: November 2017(PDF, 689KB)

Personally Identifiable Information in Salesforce
Follow-up: June 2019(PDF, 1MB)
Audit: July 2017(PDF, 2MB)

Golf Enterprise Fund
Follow-up: June 2019(PDF, 2MB)
Audit: May 2017(PDF, 3MB)

Denver’s Road Home – Homeless Services
Follow-up: February 2022
Original Audit: April 2019(PDF, 7MB)

Workday User Access Controls
Follow-up: June 2020(PDF, 2MB)
Audit: April 2019(PDF, 5MB)

Jail Safety
Follow-up: December 2022
Original Audit: March 2019(PDF, 48MB)

Denver Public Trustee
Follow-up: August 2021
Original Audit: (PDF, 10MB)March 2019(PDF, 10MB)

Halcyon Construction Inc. On-Call Contract
Follow-up: November 2020(PDF, 2MB)
Audit: March 2019(PDF, 44MB)

Westin Hotel Revenue
Follow-up: April 2021
Audit: February 2019(PDF, 2MB)

Data Centers
Follow-up: September 2020(PDF, 1MB)
Audit: January 2019(PDF, 17MB)

2018 Audits

Real Estate Leases
Follow-up: December 2018(PDF, 956KB)
Audit: July 2017(PDF, 1MB)

Payroll Systems Conversion and Internal Controls
Follow-up: December 2018(PDF, 937KB)
Audit: September 2017(PDF, 2MB)

2018 Continuous Auditing Report
December 2018(PDF, 2MB)

Denver County Courts – Court Operations
Audit: December 2018(PDF, 6MB)

Affordable Housing
Audit: December 2018(PDF, 7MB)

Coliseum and DPAC Event Contracts
Follow-up: December 2018(PDF, 1MB)
Audit: August 2017(PDF, 2MB)

Denver Employee Retirement Plan
Follow-up: December 2018(PDF, 848KB)
Audit: November 2017(PDF, 2MB)

Continuity of Operations
Follow-up: December 2018(PDF, 2MB)
Audit: December 2017(PDF, 3MB)

Disability Parking Enforcement Program
Follow-up: October 2018(PDF, 2MB)
Audit: August 2016(PDF, 2MB)

Denver Human Services Child Welfare Services
Follow-up: October 2018(PDF, 631KB)
Audit: October 2017(PDF, 4MB)

Workers’ Compensation Program
Follow-up: September 2020(PDF, 1MB)
Audit: October 2018(PDF, 5MB)

DIA – Airport Security
Audit: September 2018(PDF, 2MB)

County Courts IT General Controls
Follow-up: June 2021(PDF, 727KB)
Original Audit: August 2018(PDF, 1MB)

Pahaska Tepee Concessions, LLC
Follow-up: November 2019(PDF, 1MB)
Audit: August 2018(PDF, 2MB)

Flog, LLC and Willis Case
Follow-up: November 2019(PDF, 854KB)
Audit: August 2018(PDF, 2MB)

Denver Botanic Gardens
Follow-up: September 2019(PDF, 2MB)
Audit: July 2018(PDF, 4MB)

Workforce Development
Follow-up: November 2019(PDF, 2MB)
Audit: July 2018(PDF, 2MB)

Personally Identifiable Information
Follow-up: July 2018(PDF, 1MB)
Audit: December 2016(PDF, 2MB)

Indirect Cost Accounting Practices
Follow-up: December 2019(PDF, 1MB)
Audit: June 2018(PDF, 2MB)

Cybersecurity Assessment
Audit: June 2018(PDF, 1MB)

Denver Fire Department Resource Allocation Practices
Follow-up: June 2018(PDF, 387KB)
Audit: November 2016(PDF, 3MB)

Compensation and Benefits
Follow-up: December 2019(PDF, 1MB)
Audit: May 2018(PDF, 1MB)

Department of Finance and Public Works – Debt Management
Audit: May 2018(PDF, 2MB)

DIA – Rental Car Agreement
Follow-up: May 2018(PDF, 572KB)
Audit: February 2017(PDF, 2MB)

Denver Zoo – Cooperative Agreement:
Follow-up: May 2018(PDF, 1MB)
Audit: January 2017(PDF, 3MB)

Aramark Concessions Revenues
Follow-up: July 2019(PDF, 2MB)
Audit: April 2018(PDF, 2MB)

Capital Assets
Follow-up: March 2020(PDF, 2MB)
Audit: April 2018(PDF, 3MB)

Technology Services and Finance GenTax System
Follow-up: April 2018(PDF, 1MB)
Audit: April 2017(PDF, 1MB)

IT Service Desk
Follow-up: March 2018(PDF, 820KB)
Audit: April 2016(PDF, 1MB)

PetroPro Engineering Inc. Contract
Follow-up: November 2019(PDF, 920KB)
Audit: March 2018(PDF, 2MB)

Information Systems Cybersecurity Assessment
Audit: February 2018(PDF, 551KB)

Denver Elections Division Risk – Limiting Audit Process
Audit: February 2018(PDF, 1MB)

Airport Parking Revenue
Follow-up: November 2019(PDF, 992KB)
Audit: February 2018(PDF, 2MB)

IT Asset Management
Follow-up: February 2018(PDF, 903KB)
Audit: April 2016(PDF, 5MB)

DIA Airline Agreements
Follow-up: February 2018(PDF, 1MB)
Audit: November 2016(PDF, 2MB)

Denver Sheriff Department
Audit: January 2018(PDF, 2MB)

Government Activities Receivables
Audit: January 2018(PDF, 2MB)

2017 Audits

Cash Handling Practices
Follow-up: December 2017(PDF, 972KB)
Audit: September 2016(PDF, 2MB)

Office of Marijuana Policy
Follow-up: December 2017(PDF, 1MB)
Audit: October 2016(PDF, 3MB)

Office of Sustainability
Follow-up: December 2017(PDF, 2MB)
Audit: December 2016(PDF, 1MB)

Contract Controls in Alfresco
Follow-up: December 2019(PDF, 1MB)
Audit: December 2017(PDF, 2MB)

Short-Term Rental Enforcement
Follow-up: December 2018(PDF, 2MB)
Audit: December 2017(PDF, 3MB)

Continuity of Operations
Follow-up: December 2018(PDF, 2MB)
Audit: December 2017(PDF, 3MB)

Community Planning and Development Zoning Administration
Follow-up: November 2017(PDF, 1MB)
Audit: October 2015(PDF, 820KB)

Software Asset Management Assessment
Assessment: November 2017(PDF, 1007KB)

Denver Employee Retirement Plan
Follow-up: December 2018(PDF, 848KB)
Audit: November 2017(PDF, 2MB)

Rocky Mountain Human Services
Follow-up: October 2017(PDF, 1MB)
Audit: December 2015(PDF, 5MB)

Parks & Recreation Contract Administration Practices
Follow-up: October 2017(PDF, 821KB)
Audit: July 2016(PDF, 3MB)

Municipal Sales Tax Collection Practices
Follow-up: October 2017(PDF, 1MB)
Audit: August 2016(PDF, 2MB)

Civil Service Commission
Follow-up: October 2017(PDF, 389KB)
Audit: December 2016(PDF, 2MB)

Denver Human Services Child Welfare Services
Follow-up: October 2018(PDF, 631KB)
Audit: October 2017(PDF, 4MB)

Special Revenue Funds
Follow-up: March 2020(PDF, 1MB)
Audit: October 2017(PDF, 5MB)

Police Operations
Follow-up: September 2017(PDF, 1MB)
Audit: January 2016(PDF, 5MB)

Denver Health Operating Agreement
Follow-up: September 2017(PDF, 2MB)
Audit: February 2016(PDF, 3MB)

Information Systems Assessment
Assessment: September 2017(PDF, 1MB)

Payroll Systems Conversion and Internal Controls
Follow-up: December 2018(PDF, 937KB)
Audit: September 2017(PDF, 2MB)

Board of Adjustment for Zoning Appeals
Follow-up: August 2017(PDF, 914KB)
Audit: April 2016(PDF, 2MB)

DIA Hotel and Transit Center
Follow-up: August 2017(PDF, 1MB)
Follow-up: August 2016(PDF, 438KB)
Audit: April 2015(PDF, 2MB)

Building Permits
Follow-up: November 2019(PDF, 1022KB)
Audit: August 2017(PDF, 3MB)

Open Media Foundation Contract
Follow-up: August 2017(PDF, 913KB)
Audit: February 2016(PDF, 2MB)

Coliseum and DPAC Event Contracts
Follow-up: December 2018(PDF, 1MB)
Audit: August 2017(PDF, 2MB)

Technology Services IT Project Intake
Follow-up: November 2018(PDF, 874KB)
Audit: August 2017(PDF, 984KB)

Privatization Practices
Follow-up: July 2017(PDF, 1MB)
Audit: June 2015(PDF, 3MB)

Wastewater Management Contractor Practices
Examination Report: July 2017(PDF, 2MB)

DIA Airside Construction
Follow-up: December 2018(PDF, 1MB)
Audit: July 2017(PDF, 2MB)

Personally Identifiable Information in Salesforce
Follow-up: June 2019(PDF, 1MB)
Audit: July 2017(PDF, 2MB)

Real Estate Leases
Follow-up: December 2018(PDF, 956KB)
Audit: July 2017(PDF, 1MB)

Data Driven Policing
Audit: June 2017(PDF, 2MB)

Citywide Land and Infrastructure Capital Assets
Audit: March 2016(PDF, 3MB)
Follow-up: May 2017(PDF, 365KB)

Golf Enterprise Fund
Follow-up: June 2019(PDF, 2MB)
Audit: May 2017(PDF, 3MB)

PeopleSoft Journal Entry
Audit: May 2017(PDF, 639KB)

DIA Airport Concession Disadvantaged Business Enterprise (ACDBE) Program
Follow-up: April 2017(PDF, 918KB)
Audit: May 2015(PDF, 3MB)

Technology Services and Finance GenTax System
Follow-up: April 2018(PDF, 1MB)
Audit: April 2017(PDF, 1MB)

Department of Finance Investment Evaluation
Audit: April 2017(PDF, 2MB)

Parks Permitting Program
Follow-up: July 2019(PDF, 831KB)
Audit: April 2017(PDF, 3MB)

DIA Emergency Preparedness Program
Follow-up: March 2017(PDF, 807KB)
Audit: November 2015(PDF, 1MB)

Budget and Management Office
Follow-up: March 2017(PDF, 1MB)
Audit: December 2015(PDF, 1MB)

Accounting Services
Follow-up: March 2017(PDF, 1MB)
Audit: March 2016(PDF, 2MB)

Citywide Information Security Assessment
Audit: March 2017(PDF, 990KB)

Red Rocks Event Contracts
Follow-up: December 2018(PDF, 1010KB)
Audit: July 2017(PDF, 2MB)

Stormwater Administration
Follow-up: February 2017(PDF, 755KB)
Audit: February 2015(PDF, 3MB)

Industrial Control Systems
Follow-up: February 2017(PDF, 1MB)
Audit: May 2015(PDF, 2MB)

Public Works Denver Moves
Follow-up: February 2017(PDF, 1MB)
Audit: July 2015(PDF, 801KB)

DIA Rental Car Agreements
Follow-up: May 2018(PDF, 572KB)
Audit: February 2017(PDF, 2MB)

Denver Zoo Cooperative Agreement
Follow-up: May 2018(PDF, 1MB)
Audit: January 2017(PDF, 3MB)

2016 Audits

Denver Sheriff’s Department Jail Operations
Follow-up: December 2016(PDF, 854KB)
Audit: March 2015(PDF, 2MB)

Denver’s Road Home
Follow-up: December 2016(PDF, 491KB)
Audit: April 2015(PDF, 4MB)

Family and Medical Leave Act Administration
Follow-up: December 2016(PDF, 515KB)
Audit: August 2015(PDF, 3MB)

Personally Identifiable Information
Follow-up: July 2018(PDF, 888KB)
Audit: December 2016(PDF, 996KB)

Office of Sustainability
Follow-up: December 2017(PDF, 2MB)
Audit: December 2016(PDF, 1MB)

Civil Service Commission
Follow-up: October 2017(PDF, 389KB)
Audit: December 2016(PDF, 2MB)

DIA Airline Agreements
Follow-up: February 2018(PDF, 1MB)
Audit: November 2016(PDF, 2MB)

Denver Fire Department Resource Allocation Practices
Follow-up: June 2018(PDF, 387KB)
Audit: November 2016(PDF, 3MB)

Information Systems Maturity Assessment
Audit: October 2016(PDF, 714KB)

Office of Marijuana Policy
Follow-up: December 2017(PDF, 1MB)
Audit: October 2016(PDF, 3MB)

Cash Handling Practices
Follow-up: December 2017(PDF, 972KB)
Audit: September 2016(PDF, 2MB)

Police Response Time
Follow-up: August 2016(PDF, 812KB)
Audit: June 2014

DIA Hotel and Transit Center
Follow-up: August 2017(PDF, 1MB)
Follow-up: August 2016(PDF, 438KB)
Audit: April 2015(PDF, 2MB)

Municipal Sales Tax Collection Practices
Follow-up: October 2017(PDF, 1MB)
Audit: August 2016(PDF, 2MB)

Disability Parking Enforcement Program
Follow-up: October 2018(PDF, 2MB)
Audit: August 2016(PDF, 2MB)

Mobile Devices
Follow-up: July 2016(PDF, 559KB)
Audit: August 2014

Parks & Recreation Contract Administration Practices
Follow-up: October 2017(PDF, 821KB)
Audit: July 2016(PDF, 3MB)

DIA Information Technologies Project Lifecycle
Follow-up: July 2016(PDF, 481KB)
Audit: August 2015(PDF, 563KB)

Police Administration – TeleStaff System
Follow-up: June 2016(PDF, 2MB)
Audit: August 2015(PDF, 2MB)

Peak Academy
Follow-up: June 2016(PDF, 522KB)
Audit: October 2015(PDF, 2MB)

Medical Marijuana Taxation
Follow-up: June 2016(PDF, 856KB)
Audit: September 2014

Minority/ Women Business Enterprise Program
Follow-up: June 2016(PDF, 440KB)
Audit: December 2014

Change Management Practices
Follow-up: May 2016(PDF, 516KB)
Audit: November 2014

Urban Renewal
Follow-up: April 2016(PDF, 451KB)
Audit: August 2014

Innovation Fund
Follow-up: April 2016(PDF, 534KB)
Audit: July 2015(PDF, 2MB)

Board of Adjustment for Zoning Appeals
Follow-up: August 2017(PDF, 914KB)
Audit: April 2016(PDF, 2MB)

IT Service Desk
Follow-up: March 2018(PDF, 820KB)
Audit: April 2016(PDF, 1MB)

IT Asset Management
Follow-up: February 2018(PDF, 903KB)
Audit: April 2016(PDF, 5MB)

Business Improvement Districts
Follow-up: March 2016(PDF, 424KB)
Audit: July 2014

Citywide Land and Infrastructure Capital Assets
Follow-up: May 2017(PDF, 365KB)
Audit: March 2016(PDF, 3MB)

Accounting Services
Follow-up: March 2017(PDF, 1MB)
Audit: March 2016(PDF, 2MB)

Open Media Foundation Contract
Follow-up: August 2017(PDF, 913KB)
Audit: February 2016(PDF, 2MB)

Denver Health Operating Agreement
Follow-up: September 2017(PDF, 2MB)
Audit: February 2016(PDF, 3MB)

Police Operations
Follow-up: September 2017(PDF, 1MB)
Audit: January 2016(PDF, 5MB)

2015 Audits

Budget and Management Office
Follow-up: March 2017(PDF, 1MB)
Audit: December 2015(PDF, 1MB)

Rocky Mountain Human Services
Follow-up: October 2017(PDF, 1MB)
Audit: December 2015(PDF, 5MB)

DIA Emergency Preparedness Program
Follow-up: March 2017(PDF, 807KB)
Audit: November 2015(PDF, 1MB)

Peak Academy
Follow-up: June 2016(PDF, 522KB)
Audit: October 2015(PDF, 2MB)

Community Planning and Development Zoning Administration
Follow-up: November 2017(PDF, 1MB)
Audit: October 2015(PDF, 820KB)

Police Administration – TeleStaff System
Follow-up: June 2016(PDF, 2MB)
Audit: August 2015(PDF, 2MB)

Family and Medical Leave Act Administration
Follow-up: December 2016(PDF, 515KB)
Audit: August 2015(PDF, 3MB)

DIA Information Technologies Project Lifecycle
Follow-up: July 2016(PDF, 481KB)
Audit: August 2015(PDF, 563KB)

Innovation Fund
Follow-up: April 2016(PDF, 534KB)
Audit: July 2015(PDF, 2MB)

Public Works Denver Moves
Follow-up: February 2017(PDF, 1MB)
Audit: July 2015(PDF, 801KB)

Privatization Practices
Follow-up: July 2017(PDF, 1MB)
Audit: June 2015(PDF, 3MB)

Industrial Control Systems
Follow-up: February 2017(PDF, 1MB)
Audit: May 2015(PDF, 2MB)

DIA Airport Concession Disadvantaged Business Enterprise (ACDBE) Program
Follow-up: April 2017(PDF, 918KB)
Audit: May 2015(PDF, 3MB)

DIA Hotel and Transit Center
Follow-up: August 2017(PDF, 1MB)
Follow-up: August 2016(PDF, 438KB)
Audit: April 2015(PDF, 2MB)

Denver’s Road Home
Follow-up: December 2016(PDF, 491KB)
Audit: April 2015(PDF, 4MB)

Denver Sheriff’s Department Jail Operations
Follow-up: December 2016(PDF, 854KB)
Audit: March 2015(PDF, 2MB)

Stormwater Administration
Follow-up: February 2017(PDF, 755KB)
Audit: February 2015(PDF, 3MB)

2015 – 2020 Reports Alphabetically

Timothy O'Brien Official Headshot

AUDITOR TIMOTHY O'BRIEN, CPA
Denver Auditor

Denver Auditor's Office

201 W. Colfax Ave. #705 Denver, CO 80202
Email: auditor@denvergov.org
Call: 720-913-5000
Follow us on Facebook Connect with us on Twitter

Auditors Office Logos for Footer: Denver Auditor, Denver Labor

Audit Reports

City Equity Program and Practices Follow-Up

2024 Annual Report

2025 Action Card

Police Operations and Staffing

Great Hall Construction Follow-Up

Key audit reports

City Equity Program and Practices Follow-Up

Information Technology General Controls

Microsegmentation

Police Operations and Staffing Follow-Up

Great Hall Construction Follow-Up

Emergency Medical Response Time

Citywide Information Technology Purchases Follow-Up

City Shelters

Denver College Affordability Fund Program Follow-up

Airport Information Technology Vendor Management Follow-Up

Fleet Management

Construction Contractor Prequalification Process

Employee Separation Process

Museum of Nature & Science

Co-Responder Expansion Grant and Contract Compliance Follow-up

Colorado Youth Detention Continuum Program Grant Compliance

Residential Trash, Recycling, and Compost Services Follow-up

Information Technology Risk Management

Etai’s Café Concessions Contract Follow-up

2024 Briefing on Artificial Intelligence

Denver Water City Services Follow-up

Mental Health Services in Denver’s Jail System Follow-up

Phishing Follow-up

Cybersecurity: Password Hygiene Follow-up

Cybersecurity: Network Operations Center Follow-up

Woody Creek Bakery & Café Concessions Contract

Self-funded Health Plan

Semiannual Audit Analytics Update - February 2024

Denver Golf Operations Follow-up

Residential Permitting

Construction Manager/General Contractor Delivery Method Follow-up

City Council Operations

Denver Art Museum Follow-up

Fair Elections Fund Follow-up

Neighborhood Food Environments Program Grant Compliance Follow-up

Information Technology Vendor Management Follow-up

Affordable Housing

Airport Concessions Management Follow-up

2015 – 2025 Reports Chronologically

2025 Audits

2024 Audits

2023 Audits

2022 Audits

2021 Audits

2020 Audits

2019 Audits

2018 Audits

2017 Audits

2016 Audits

2015 Audits

2015 – 2020 Reports Alphabetically

A - D (Dep)

D (DIA) - G

H - P (Peak)

P - Z