Built on Relationships. Defined by Quality.

Construction Management Firm and General Contractor, serving Northern Illinois and Southern Wisconsin

Fourth Generation.

Family-Owned.

Fine Craftsmanship.

Culture of Integrity

We approach each building with the same care and commitment as if it were our own.

Selecting the right construction partner for your facility is a very important decision. We understand that bringing your project in on budget, on schedule, and with exceptional quality is essential. This guides every choice we make, from the day you select us to the moment the ribbon is cut.

Yet, a true partner goes beyond the basics. We build relationships rooted in trust, giving you confidence that we’re always working on your behalf. Our goal is to make the construction process as seamless and enjoyable as the final result—and we won’t rest until every detail meets our (and your) highest standards.

"During my lifetime I have worked with many contractors—both good and bad. I can truly say that I rate this firm as one of the best."

Paul Schilling, Building Committee Chairman - Church of the Good Shepherd, Oswego

Construction Services Libertyville IL

Your Project, Your Way.

When you partner with Efraim Carlson, every project receives our full commitment to quality and precision, no matter which delivery method you choose. We understand that each client and project is unique, with distinct goals and preferences. To bring your vision to life, we offer three specialized construction delivery methods - along with the skill of our in-house carpentry crew who handle everything from quick installations to expansive builds.