A Century of Integrity

A Full-Service Construction Management Company And Precious Resource To Your Project And Community.

Solid Foundation. Trusted Partner.

For 100 years, Tonn and Blank has been the leading full-service construction management, general contracting, and design-build firm in the Midwest. From historical renovations to new construction, our portfolio includes commercial buildings, industrial manufacturing, healthcare, faith-based, higher education, and more. Our team approaches each project with a commitment to excellence and quality craftsmanship, delivering client-centered expertise in all phases of your project’s development.

We care about quality work done right the first time, so we self-perform and hire dependable partners. We care about supporting the communities we work in, so our time, resources and profits are donated without hesitation. We care about the skilled labor shortage, so we spearhead professional development initiatives through apprenticeship programs.

Our team takes great pride in embodying the spirit and skill of an owner’s builder – protecting the best interest of our client, their project, and community.

Our Services

We offer a streamlined, full-service approach to meet all of your project needs.

Architecture & Design

We create appealing, effective building designs that bring your vision to life.

Commercial Construction

From planning and development to ground-up construction, we cover all the essential phases for a successful project.

Program Management

Serving as an extension of your staff, we coordinate a project from concept to full design development to end user occupancy.


We bring inside knowledge of our expert labor force which allows greater control over the quality of workmanship, budget, and schedule.

Off-Site Construction

Off-site construction is faster, safer, more regulated and requires less coordination efforts, resulting in more productivity and improved quality control.
Our new 85,000 square foot off-site construction facility maximizes our self-reliance and competitive advantage by improving each project’s quality, safety, schedule, and site logistics. All facets of a project can be constructed in our facility including bathroom pods, exam rooms, offices, electrical and data distribution rooms, and interior and exterior wall systems.

Our Portfolio

Whether restoring a faith-based structure to its former glory, or building a new specialty hospital downtown, the end result is always the highest standard in construction.

Boys & Girls Club – Duneland Club

The building expansion of the Boys and Girls Club in Porter County provided much-needed additional space and services to the children in the community. The 19,000 square foot expansion of the existing Club included a full-size gymnasium, a two-story rock-climbing wall, a new lobby, reception and concessions area, fitness studio, an education center, STEM lab, and a teen tech lounge with state-of-the art technology and equipment.

As a result of this renovation and expansion, active membership at the Duneland Boys & Girls Club increased from 474 in 2016 to 920 youth and teens in 2017. The average daily attendance skyrocketed by more than 110% going from 145 kids per day to more than 310 kids using the Club every day!

Our Clients Are The Backbone For Our Sustained Success

Numbers Tell A Story
Projects successfully delivered in the last 10 years
Of our profits go back to the communities in which we work
ENR Top 400 Contractor
Current projects utilizing our off-site construction division
Let’s Build Together

Whether you’re ready to collaborate on a project, discover how our services can enhance your construction experience, or curious about joining our team – we’re here for you. Connect with us!

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