Family Tradition and Global Reach


For more than a hundred years, our company’s foundation has been built upon an unflinching commitment to doing business the right way. That means we take care of our people, by creating a work environment second to none. We respect our partners by structuring our business dealings around honesty, integrity, and fairness. We value our customers as the very lifeblood of our enterprise. And we do our part to build a better world in the communities we call home.


Richard F. Conlon, who believed in guts and hard work along with sound business practices, founded Conlon Construction Co. in 1903. Through the first two decades of the 20th Century he left his mark all across southwestern Wisconsin – working on a variety of mechanical, electrical and civil engineering projects in Cuba City and the surrounding area. By 1922, the Company needed to relocate after a period of exceptional growth. He moved to Dubuque, Iowa, where greater educational and other opportunities were available for the growing Conlon family. In the mid-1930's, the Company now in the capable hands of the second generation of Conlons, had become firmly established in the region having built a number of prominent college and university buildings, factories, religions structures, and municipal buildings throughout Iowa, Wisconsin, and Minnesota.

As the decades passed, a third generation of Conlon's – Tim, Steve and Mike – assumed the mantle of leadership and Richard Conlon's values remained vibrant and true. These values are the reason they were able to celebrate their 100-year anniversary in 2003 - a milestone everyone is proud of. After more than fifty (50) years of dedicated service and leadership, Mike passed away in 2017.

In 1979, Conlon received their first contract with the Target Corporation which has led the way to hundreds of projects for the national retailer. In 1996, Conlon was awarded Target's first-ever Vendor of the Year Award in recognition of leadership, dependability, superior service and support for Target's “Speed Is Life” philosophy. They work in all fifty (50) states and have provided varied construction and store fixturing services not only for Target, but other major retail clients as well. Expanding their capabilities and understanding the unique requirements of retail construction, has enabled Conlon to grow business significantly to provide even greater services.

Since 2007, Conlon has been a member of the USGBC – United States Green Building Council. USGBC is a community of leaders working to transform the way building and communities are designed, built, and operated. Conlon shares in their vision for an environmentally responsible, healthy, and prosperous environment that improves quality of life. The Conlon team is proud to have Project Managers who are LEED Accredited Professionals. LEED AP's are recognized experts in integrated design and the LEED certification process. In 2005, Conlon built Target's first-ever LEED certified store in Allen Park, Michigan; they continue to pursue opportunities to incorporate green building practices on all of their current projects.

Conlon Construction Co. provides Construction Management, General Construction, Design-Build, and Retail Fixturing services to clients nationwide. They offer the accessibility, support, and commitment of a local Mid-western firm with the strength, stability, and resources of a national corporation.

Long Term Client Listing

Client Since
Sinsinawa Dominican Sisters 1920
Loras College 1924
Clarke University 1924
Archdiocese of Dubuque 1932
Klauer Manufacturing Co. 1940
American Trust & Savings Bank 1943
Farmland Foods, Inc. 1945
Sisiters of Charity, BVM – Mount Carmel 1950
Mercy Medical Center 1952
Sisters of the Presentation 1953
Alliant Energy 1960
John Deere Dubuque Works 1960
City of Dubuque 1963
Sisters of the Visitation 1970
Target Corporation 1979
University of Dubuque 1980
Frommelt Industries 1983
Kmart Corporation 1989
The Finley Hospital 1990
Sisters of St. Francis 1993
Best Buy Co., Inc. 1995

Mission and Commitment

Conlon Construction Co. will build on a solid foundation of integrity and sound business practice, providing General Construction, Construction Management and Design-Build Services to clients in Dubuque and throughout the nation.

The building blocks for our Company’s continued success are:

  • Maintaining and Nurturing Long-Term Client Relationships
  • Delivering High Quality, Timely Value on every Construction Job
  • Involving an Owner of Conlon on all Major Construction Projects
  • Providing Professional Skills in all areas of the Construction Delivery Process
  • Pursuing Continual Education and Renewal
  • Demonstrating Responsibility and Flexibility at all times

We continually explore and employ new construction methods and technologies to increase value to our construction clients.

We value our skilled and loyal work force and strive to reward them for their contributions by providing a safe, efficient, and enjoyable work environment.

We graciously acknowledge our role as a community leader and strive to invest our resources to improve the community in which we live.

Tim Conlon


Steve Conlon

Vice President

$100,000 in Scholarships

We are active in giving back to the profession we work in. In celebration of our 100th year in business, we established a $100,000 Scholarship and Training Fund to support education in construction. This money goes to students interested in construction management, construction engineering or the construction trades.

Scholarship programs have been established at the University of Northern Iowa, the University of Wisconsin-Platteville, and Iowa State University. The Craft Training Program is administered through Northeast Iowa Community College.


We are active members in the construction community. Our memberships and associations provide us the current information to better perform in one of the most competitive industries in the country.

A Foundation Built Upon Guts and Hard Work

- R.F. Conlon

We Want to Build With You.

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Steve Conlon

Steve Conlon



“I can drive down any street in town and see a building we’ve done or a truck with our name on it,” says Steve. “There’s a tremendous pride in that, but also a great sense of responsibility.”

Steve brings more than four decades of experience in all facets of the construction industry to his role as President of the Company. Over the years, he has gained an in-depth knowledge of all areas of construction by learning the business from the ground up, starting as a laborer and working through virtually every position to serve today as the company’s President. Along the way, he learned the importance of giving every assignment the utmost commitment, creating lasting relationships and giving back to the community.

“Today on many jobs we work with the Owner and Architect from project inception to completion striving to make sure everything we do guarantees another safe and successful Conlon building project,” he says. “We know that we are building on a legacy of excellence and that’s a heritage we take very seriously.”

Currently, Steve is active in the Boys and Girls Club of Greater Dubuque serving on the Board of Directors. In previous years, he participated on boards for various organizations, as well as committees for the Masters Builders of Iowa where he served as their President.

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Tim Conlon

Tim Conlon

Vice President & Secretary


“What makes a Conlon project unique is our ability to look far beyond building to help our clients envision the purpose and mission of what they’re creating,” Timothy Conlon says. “It’s so much more than bricks and mortar – we work with architects and designers to find the right materials and style to make every structure not only functional but unique and powerful.”

Timothy believes that every building becomes a signature part of the overall community, exhibiting the hard Midwestern work ethic and rich history of a truly historic city with its own very special personality. Starting as a laborer with the company nearly four decades ago and rising through the ranks to company management, he sees his own personal mark on Conlon projects. In his current role, Timothy serves as Vice President and Secretary, responsible for a wide variety of managerial and operational functions.

“It’s very humbling to see the ways that our company has helped to create the character of many cornerstone organizations and businesses in the area – we know that everything we do will continue to affect our community,” he adds. “So we always take the long-range view in terms of relationships, quality, service and more. We want the Conlon Family to feel the very same sense of community pride in another hundred years.”

Tim has been very active on a variety boards and committees, including the American Trust & Savings Bank, Hillcrest Family Services, Clarke University, Community Foundation of Greater Dubuque, Dubuque Museum of Art, National Mississippi River Museum and Aquarium, Dubuque Chamber of Commerce, Stonehill Benevolent Foundation, Greater Dubuque Development Corporation and St. Mark Community Center. He is actively involved with the Master Builders of Iowa and has served as its President. He has also been involved with the Advisory Board Committees for the Northeast Iowa Community College, Dubuque Community School District and University of Northern Iowa.

In 2008, Tim Conlon was voted by the Tri-State Business Times as the second most influential person in their list of the Top Ten Most Influential People in the Tri-States. The award recognizes community leaders who are most likely to make things happen.

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Michael J. Conlon

Michael J. Conlon

Vice President & Secretary


A veteran in the construction industry, Mr. Conlon serves as the Vice President and Treasurer of Conlon Construction Co. Like the other Conlon executives, Michael rose through the ranks as a field laborer and progressed in site supervision, project management and company management. He is a graduate of Loras College and University of Iowa with a B.A. in Business Administration and B.S. in Civil Engineering.

Michael has served on numerous boards and been highly active incivic and industry groups. Some of his participation included the Associated General Contractors of America, Master Builders of Iowa, Construction Fellowship, Dubuque Building Trades Association, Dubuque Builders Exchange, Greater Dubuque Development Corporation, Junior Achievement, Stonehill Care Center, St. Mark Community Center, Grand Opera House, Loras College, Iowa College Foundation, University of Iowa, Firstar Bank, Harvest Savings Bank and Dubuque Savings and Loan.

In 2001, Michael received the prestigious “Build Iowa Award” from the Master Builders of Iowa in recognition of his significant career. This award is presented to the member who has best exhibited throughout his career the principles of the MBI/AGC motto “Skill, Responsibility, and Integrity.” He has also served on various committees, the Board of Directors and all offices through President for the Master Builders of Iowa.

Michael is a member of the Iowa Engineering Society and National Society of Professional Engineers. As well as being a Registered Professional Engineer for the State of Iowa, he is a Registered Contractor’s Representative for the states of Alabama, Arizona, Florida, Louisiana and Tennessee.