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Who we are
Plans may change.
Our commitment doesn't.

Plans may change. Our commitment doesn't.

Our Brand Promise

We deliver innovative construction solutions to consistently exceed our clients’ expectations.

We respect and collaborate with our business and industry partners and treat them fairly and ethically.

We promote a culture of equity in our company

and our industry where all voices are heard.

We create opportunities for continual growth for

our team members.

We learn continuously and share our expertise

and earned experience with leaders of the future.

Building a healthy place in our world.

“From the responsibilities we accept to the results we deliver, Custom Contracting’s commitment remains constant, start to finish.”

- Leon LaJeunesse, Cofounder 

Custom Contracting brings to every client engagement deep knowledge and broad experience gained over nearly four decades of success in the construction industry. Combining that with our proven creativity and resourcefulness, we build environments that promote the wellbeing of those who reside and work within them and that further the mission and goals of those who own and manage them.

Focusing on quality

Adhering always to industry best-practices, we work continuously to improve our processes and to keep pace not only with the rapid advances in construction and related industries, but also those in the specialized industries of the clients we serve.


Minimizing risk

To anticipate and mitigate the risks inherent in all construction projects, Custom Contracting strictly adheres to established codes, regulations, and standards. We help ensure compliance across the entire project team through active collaboration and open communication. 


Protecting our environment

Custom Contracting remains on the leading edge of sustainable constructions principles, practices, and materials. We offer our clients environmentally friendly building solutions that align with their goals and help sustain a healthier world for all.


Delivering value

Custom Contracting has taken a leadership role in promoting the adoption of lean construction techniques to enhance collaboration, increase schedule certainty, optimize budgets, and create value for all parties on every project. 


Keeping our promises

The Custom Contracting team evolves continuously on pace with our industry, always seeking new and better ways to do our jobs mindful always of the principles that underpin the promises we make to our clients, employees, trade partners, and community.

From our president

Building a healthy place in our world

Donna LaJeunesse

At Custom Contracting, we believe that our success stands firmly on the commitment of each of our team members to live up to our formally stated mission in everything we do for our clients, industry collaborators, and society

at large.

That mission—to build a healthy place in our world—in all its multilayered meaning embodies our legacy, our culture, and our very reason for being. It’s why we do what we do.


From the company’s earliest days, we’ve understood how the work we do impacts the success of our clients and the quality of life for those who work and live within the environments we create. As the construction industry continues to evolve, Custom Contracting stands poised to lead across the dimensions that matter most to our clients and our company.


The quality of our work, our clients’ satisfaction, and the longevity of relationships with them offer proof of our dedication to the industry’s highest ethical standards and the application of state-of-the-art materials, methods, and technologies.


Just as critical is our commitment to equity within and outside our organization. We bring that to life by recognizing that every individual comes with a unique set of talents, capabilities, and circumstances and by enabling each with the tools and resources required to succeed and thrive.


Examples of that are the certifications of Custom Contracting as a Women’s Business Enterprise (WBE) by the Women’s Business Enterprise National Council, State of Illinois BEP, and the City of Chicago. These certifications broaden our business prospects with others who value equality and diversity, underscoring our company’s unwavering commitment to equity.


I have witnessed personally how well this works within our company and the impact it has for those who engage and interact with us outside our walls. It is essential to leadership and a prerequisite for fulfilling our mission.


In it together. Plans may change, our commitment doesn’t.


Donna LaJeunesse

President, Custom Contracting

Leon LaJeunesse
Leon 2

Our history

Bringing a vision to life

Custom Contracting came to life as a carpentry-focused business in 1987 in Lake Zurich, Illinois, The vision for the company arose from Leon and Carol LaJeunesse’s desire to build the best possible life for their young family, which had expanded to four—soon to be five—at the time of the company’s founding.

Through referrals from industry representatives and satisfied customers, Custom Contracting quickly gained a solid reputation for high-quality work and the conscientiousness of its management. An early opportunity—working with design-build teams to construct cleanrooms for a global manufacturer—led to engagements to reduce energy costs on Illinois School District projects and major upgrades in several Chicagoland school districts.

That mix of cutting-edge expertise and deep experience proved ideal qualifications for the highly specialized work that occupied healthcare construction projects require, which led to a major contract with one of Chicagoland’s largest healthcare systems. Today, Custom Contracting has master agreements with several of the area’s premier healthcare providers and continues to expand its business into other industries that require its brand of expertise, quality, and reliability.

In 2023, Custom Contracting again demonstrated its forward-thinking corporate leadership when it achieved formal certifications as a Women’s Business Enterprise (WBE) by the Women’s Business Enterprise National Council, State of Illinois

BEP, and the City of Chicago, which confirm that the company is at least 51

percent owned, operated, and controlled by women. A rarity in the construction industry, WBE certification sets Custom Contracting apart and enhances its value to current and future clients.

Leon 1
Leon 3
Custom Contracting Plans and Hardhat

News & more
In and around Custom Contracting

Professional Women in Construction (PWC),

Summer Social,

July 25, 2024, Canal Street Eatery, Chicago, Illinois


Summer is in full swing! Celebrate in style with our members, colleagues, peers, and industry professionals. Light appetizers will be served alongside an open bar.

PWC is committed to promoting diversity, equity and inclusion in the construction industry. In that spirit please consider bringing a diverse partner to this event. 

Purchase your tickets by July 6th and receive a 25% discount. After that, prices will return to regular event pricing, but Members and M/WBE companies are still eligible for a discounted rate.

Click here for more information and to register.

Chicagoland Associated General Contractors,

Young Professionals Rooftop Summer Social, July 25, 2024, 

Utopian Tailgate, Chicago, Illinois


Join the fun at partyscape UTOPIAN TAILGATE perched high atop Piper's Alley, above world-famous comedy enclave The Second City!  Dreamy décor and interactive fun & games will be in full swing at this indoor/outdoor never-ending tailgate...super-sized Jenga, disco dance party, and a whole lot more mix with elevated eats and whimsical drinks!


Click here for more information and to register.


Healthcare Engineers Society of Northern Illinois (HESNI),

Summer Outing: Air and Water Show,

August 9, 2024, Castaways at North Avenue Beach, Chicago, Illinos.


This year's annual summer outing will take place during one of Chicago's best events: the Air and Water Show! HESNI has reserved a private section of the Rooftop of Castaways at North Avenue Beach. Come out for food, fun, celebration, and networking!


Click here for more information and to register.


The Shepherd's Circle Presents Barn Dance 90s Throwback,

 September 14, 2024, Good Shepherd Hospital, Barrington, Illinois.

90s inspired, country-casual attire is encouraged!
Live entertainment will be provided by the Hillbilly Rockstarz.

All ticket purchases include unlimited food and dessert from local food truck favorites, beer, wine, and select non-alcoholic beverages. There is no reserved seating; tables are first come, first serve.

Proceeds from this year’s Barn Dance will benefit Smart Farm at Advocate Good Shepherd Hospital, which provides high-quality produce to our communities in need and serves as an educational resource on healthy eating.


Click here for more information and to register.

Lean Construction Institute (LCI), Surfing the Wave of Lean Design and Construction, October 22-25, 2024, San Diego, California

Gain new ideas and perspectives that will enrich your work and drive your Lean practice forward. Playing a vital role in the ever-evolving design and construction industry for 26 years, Congress is where your Lean community comes together for unparalleled knowledge-sharing across disciplines. Attendees come back year after year to reconnect while sharing experiences and successes—and return home with critical, actionable knowledge. Registration details will be available soon.


Click here for more information and to register.

Chicago Build 2024

Chicago Build 2024 Expo, Diversity in Construction,

October 22-23, 2024. McCormick Place, Chicago, Illinois.

Chicago Build is the largest construction & design show for the Midwest.

The show features 30,000+ AEC professionals, 400+ inspiring speakers across 12 conference tracks & AIA CES accredited workshops, 300+ exhibitors, live demos, networking parties, entertainment and much more!


Click here for more information and to register.

Custom Contracting, certified WBE.

Custom Contracting is Certified as a Women's Business Enterprise

By: Donna LaJeunesse, Majority-Owner and President,

Custom Contracting 


I’m thrilled, honored, and personally proud to announce that the Women’s Business Enterprise National Council (WBENC) has certified Custom Contracting as a Women's Business Enterprise (WBE). WBENC is the nation's largest third-party certifier of businesses owned and operated by women in the United States. Read more

Custom Contracting, certified WBENC.
Custom 2.0

Custom Contracting 2.0: Next Generation Leadership,

Enduring Commitment

By: Leon LaJeunesse, Cofounder and Former President,

Custom Contracting 


True to our mission of building a healthy place in our world, Custom Contracting has taken yet another intentional step to propel our business forward. I’m pleased and excited to announce that Donna LaJeunesse, who took the reins as president this past August, obtained majority ownership of Custom Contracting effective January 1, 2023. Read more

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